Which of these is the best method to estimate the speed at which a star is moving away from Earth?


measure the star's red shift

calculate the pitch due to changes in frequency of light

calculate the parallax due to changes in Earth's position

measure the star's blue shift ...?

Answers

Answer 1
The best and most correct answer among the choices provided by your question is the first choice or letter A.

The best method to estimate the speed at which a star is moving away from Earth is to measure the star's red shift.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
Answer 2

Answer A. Red shift. verified 12/21/18 per test results.


Related Questions

Mountains formed by two colliding continents often contain marine _______ rock. A. sedimentary B. igneous C. metamorphic D. limestone

Answers

The correct answer is;

A. sedimentary

Mountains formed by two colliding continents often contain marine SEDIMENTARY rock.

Explanation:

This suggests that if they strike, regularly mounts come from out of the sea and actuate vertically up. This indicates that sedimentary marine rocks ultimately become non-marine rocks because they're not in the sea anymore so they can be located on before-mentioned mountains.


Mountains formed by two colliding continents often contain marine SEDIMENTARY rock.

Which of the following medicinals are utilized to help reduce pain?
A. Tranquilizers
B. Analgesics
C. Insulin injectables
D. Sulfonamides

Answers

The answer to your question is B. Analgesics. Hope that helps.

B.  Analgesics are used to reduce pain


A girl delivering newspapers covers her route by traveling 2.00 blocks west, 3.00 blocks north, and then 7.00 blocks east.

(a) What is her resultant displacement?
____blocks at ____° north of east

(b) What is the total distance she travels?
____blocks ...?

Answers

she travels 2+3+7 blocks for a total of 12 blocks  (B part)
So she travels √(5^2+3^2) = √34 blocks part(A)

How many significant figures are in 25.030 , 0.006 070 , 1.004 and 1.3005 20 and why ?

Answers

25.030: 5 because zeroes are after decimal

0.006: 3 because 2 zeroes are after decimal

1.004: 4 because zeroes are between numbers

(Not sure what you meant to write for these)

1.300520: 7

1.3005: 5 because zeroes are after decimal and between numbers

20: 1 because zero isn't after a decimal or between numbers

Numbers other than 0 are always SigFigs!

Hope I helped! :)

Answer:

Explanation:

The significant figures are defined as the figures that give the value and information of the accuracy of a measurement. The zero is the number that can have two behaviors if it is to the right of us numbers is significant since it gives an idea of ​​the precision of the meditation, but if it is on the left and only serves to indicate the position of the decimal point it is not significant ; All of us numbers are always significant.

 Using the above statements we will shrink the significant numbers numbers:

number  Significant     description

                figure

25.030        5                  all significant, zero right indicates measurement accuracy

0.006070    4                 zeros to the left of the “6” indicate position of the decimal point, they are not significant

1,004            4                 all significant

1.300520     7                 all significant, zero right indicates accuracy is significant

1. Which of the following does not need to be done when constructing a frequency
distribution?
A) select the number of classes desired
B) find the range
C) make the class width an even number
D) use classes that are mutually exclusive
2. What are the boundaries of the class 12-16?
A) 11.5 and 16.5
B) 10 and 18
C) 12 and 16
D) 4
3. Which of the following pairs of class limits would be appropriate for grouping the
numbers 12, 15, 10, and 17 ?
A) 9-13 and 13-17
B) 10-12 and 15-17
C) 10-12 and 13-17
D) 10-13 and 14-17
1. Which of the following does not need to be done when constructing a frequency
distribution?
A) select the number of classes desired
B) find the range
C) make the class width an even number
D) use classes that are mutually exclusive
2. What are the boundaries of the class 12-16?
A) 11.5 and 16.5
B) 10 and 18
C) 12 and 16
D) 4
3. Which of the following pairs of class limits would be appropriate for grouping the
numbers 12, 15, 10, and 17 ?
A) 9-13 and 13-17
B) 10-12 and 15-17
C) 10-12 and 13-17
D) 10-13 and 14-17

Answers

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

Below are the answers:

1. B) find the range
2.  C) 12 and 16
3. C) 10-12 and 13-17

The ice in his drink has a mass of 6 g and a volume of 20 cm3. what is the density of the ice?

Answers

I'm pretty sure 0.3 is the answer. Because P(density) = m/V  

Explain how does distance affect gravitational force

Answers

Final answer:

Distance profoundly influences gravitational force as it changes inversely with the square of the distance between two objects. The gravitational force weakens significantly when the distance is increased, following Newton's universal law of gravitation.

Explanation:

Distance has a crucial impact on the gravitational force. According to Newton's universal law of gravitation, the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This implies that if the distance between two objects doubles, the gravitational force between them becomes one-quarter as strong, following an inverse square relationship.

For example, if we consider two galaxies, the gravitational attraction between them is governed by the same principle. The greater the distance (r), the weaker the gravitational pull between the two galaxies. In the case of celestial bodies like a red giant star expanding, points on its surface get farther from the center of gravity, resulting in a decrease in the gravitational pull at those points.

Newton's insights allowed us to understand that the gravitational force drops to zero only at an infinite distance, which is why objects in the universe, no matter how far apart, still exert some gravitational influence on each other, although it becomes increasingly weaker with distance.

A block is suspended from the ceiling by a long, thin strip of tungsten metal. The strip behaves as a spring. To produce a 0.25m horizontal deflection of the block, a force of 6.5 N is required. Calculate the spring constant for the tungsten strip.

Answers

F = kx

6.5 N = K 0.25

6.5 / 0.25 = 26 N/m

Hope this helps

The spring constant for the tungsten strip is 26 N/m

[tex]\texttt{ }[/tex]

Further explanation

Hooke's Law states that the length of a spring is directly proportional to the force acting on the spring.

[tex]\boxed {F = k \times \Delta x}[/tex]

F = Force ( N )

k = Spring Constant ( N/m )

Δx = Extension ( m )

[tex]\texttt{ }[/tex]

The formula for finding Young's Modulus is as follows:

[tex]\boxed {E = \frac{F / A}{\Delta x / x_o}}[/tex]

E = Young's Modulus ( N/m² )

F = Force ( N )

A = Cross-Sectional Area ( m² )

Δx = Extension ( m )

x = Initial Length ( m )

Let us now tackle the problem !

[tex]\texttt{ }[/tex]

Given:

extension of strip = x = 0.25 m

magnitude of force = F = 6.5 N

Asked:

the spring constant for the tungsten strip = k = ?

Solution:

We will use Hooke's Law to solve this problem:

[tex]F = k x[/tex]

[tex]6.5 = k \times 0.25[/tex]

[tex]k = 6.5 \div 0.25[/tex]

[tex]\boxed {k = 26 \texttt{ N/m}}[/tex]

[tex]\texttt{ }[/tex]

Learn moreYoung's modulus : https://brainly.com/question/6864866Young's modulus for aluminum : https://brainly.com/question/7282579Young's modulus of wire : https://brainly.com/question/9755626

[tex]\texttt{ }[/tex]

Answer details

Grade: College

Subject: Physics

Chapter: Elasticity

You plan a car trip for which you want to average 90 km/h. You cover the first half of the distance at an average speed of only 48 km/h. What must your average speed be in the second half of the trip to meet your goal?

Answers

Final answer:

The average speed for the second half of the trip needs to be 90 km/h.

Explanation:

To find the average speed you need to consider the total distance and total time.

In this case, let's assume the total distance is d kilometers. So, the first half of the distance is d/2 kilometers.

The first half is covered at an average speed of 48 km/h, which means it takes (d/2) / 48 hours to cover the first half.

To meet the goal of averaging 90 km/h for the entire trip, the average speed for the second half needs to be enough to cover the remaining distance (d/2) with the remaining time (d/2) / 90 hours.

Therefore, the average speed for the second half of the trip needs to be 90 km/h.

Compared to fossil fuels, conserving water is not very important.
True or false

Answers

the answer is the second option false

Answer:

false

Explanation:

1. How many correct experiments do we need to disprove a theory? How many do we need to prove a theory? Explain.

2. A guidebook describes the rate of climb of a mountain trail as 120 meters per kilometer. How can you express this as a number with no units?

Answers

1.  You can never prove a theory. All theories and laws and scientific knowledge in general is provisional. If your theory is inconsistent with an experiment (and you are sure the experiment is correct), your theory needs to be pitched or modified.

2. change the meters to kilometers; 

120 m/km = .12 km/km = .12 

or the kilometers to meters; 

120 m/km = 120 m/1000m = .12 

This sounds like its telling you how far you climb vertically (.12 km) for every 1 km that you walk along the slanted, winding trail. 

The unitless number ".12" is usefull because now you can think of the rate of climb in any units you want. So you rise vertcally .12 miles for every mile you walk the trail, or you rise .12 ft for every foot you walk the trail, etc.

Disproving a theory requires just one contradicting experiment while proving a theory involves numerous supporting experiments. The mountain trail's rate of climb, 120 meters per kilometer, is expressed as a dimensionless number 0.12 after dividing meters by kilometers. Theory validation is based on predictive success and scientific acceptance, whereas a model's validity can be more limited in scope.

Understanding Theory Validation and Rate Expression

In the context of scientific theories, disproving a theory typically requires only one definitive experiment that provides evidence contradicting the theory's predictions. In stark contrast, proving a theory is a more complex process. A theory cannot be proven in an absolute sense; it can only be supported by a preponderance of evidence. This involves numerous experiments that consistently validate the theory's predictions.

When expressing the rate of climb of a mountain trail, which is described as 120 meters per kilometer, we are dealing with a simple ratio. To express this as a dimensionless number, we divide the number of meters by the number of kilometers, understanding that 1 kilometer equals 1000 meters. The resulting figure is 0.12, which is the gradient or incline of the trail without any units.

The validity of a theory is determined by how well it predicts and explains phenomena in the natural world. Theories are considered more valid if they have been thoroughly tested and widely accepted in the scientific community. For a model to be considered valid, it doesn't need to be universally applicable; it must effectively represent the phenomena for which it was designed. In contrast, a theory is generally expected to have wider applicability.

Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 16 m/s at an angle 47 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground.

What is the maximum height the ball goes above the ground?

Answers

v^2 = u^2 + 2as

0 = (16 sin 47)^2 + 2 (-9.81)s

s = 6.98m

= 7.0m (2s . f)

Hence, maximum height is 8.5 m

hope this helps

What is the total number of components into which a single force can be reso

Answers

two components (vertical and horizontal)

Final answer:

A single force can be resolved into two components, typically horizontal and vertical, and the process of doing so is known as resolution of a force. Diagrams are useful for visualizing these components.

Explanation:

The total number of components into which a single force can be resolved is typically two: the horizontal and vertical components. When dealing with vector quantities like force, the resultant vector can be found by adding together these two components. The process of finding these components is known as resolution of a force. It is important to analyze the individual components to understand the effect of the force in different directions.

For example, consider a force represented by the vector F having horizontal and vertical components . If F has a magnitude of 50 N at an angle θ from the horizontal, its components can be calculated using trigonometry:

[tex]F_{x}[/tex] = Fcos(θ) and [tex]F_{y}[/tex]= Fsin(θ).

What does the physics equation EF=0 mean?

Answers

The sum of all the forces acting on an object is zero. That means the object is in equilibrium, not experiencing an acceleration.

Equation ΣF=0 refers total force applied on the body is zero. The forces acting on a body are referred to as balanced forces when the sum of all the forces acting on the body equals zero.

What is force?

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

Equation ΣF=0 refers total force applied on the body is zero.

The forces acting on a body are referred to as balanced forces when the sum of all the forces acting on the body equals zero.

Learn more about force here:

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Your question is incomplete. But most probably, the question was:

What does the physics equation ΣF=0 mean?

Calculate the wavelength of the radiation released when an electron moves from n=5 to n=2

Answers

Final answer:

The wavelength of the radiation released when an electron moves from the n=5 to n=2 orbit is calculated using the Rydberg formula, resulting in a wavelength of 536 nm.

Explanation:

To calculate the wavelength of the radiation released when an electron moves from the n=5 to the n=2 energy level, we can apply the Rydberg equation. In this case, n1 would represent the lower energy level (2), and n2 would represent the higher energy level (5). The Rydberg formula for wavelength is 1/λ = R (1/n1² - 1/n2²), where R is the Rydberg constant (approximately 1.097x10^7 m-1).

When we substitute our given values into this formula we find:

1/λ = R (1/2² - 1/5²)1/λ = (1.097x10^7 m-1) (1/4 - 1/25)1/λ = (1.097x10^7 m-1) * 0.17 1/λ = 1.865x10^6 m-1

So, λ = 1/1/λ = 5.36 x 10^-7 m or 536 nm.

This represents the energy difference between the two levels as expressed through the wavelength of the emitted photon when the electron makes a transition from n=5 to n=2.

Learn more about Wavelength Calculation here:

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To find the wavelength of radiation when an electron transitions from n=5 to n=2 in a hydrogen atom, use the Rydberg formula. After calculations, the wavelength is found to be approximately 434 nm.

This question relates to the calculation of the wavelength of the radiation emitted by a hydrogen atom when an electron transitions from the n=5 energy level to the n=2 energy level. We use the Rydberg formula for this calculation:

1/λ = R_H (1/n₁² - 1/n₂²)

where λ is the wavelength, R_H is the Rydberg constant (approximately 1.097 x 10⁷m⁻¹) n1 is the lower energy level, and n2 is the higher energy level. For this specific transition, n1=2 and n2=5.

Insert the values into the formula:1/λ = 1.097 x 10⁷m⁻¹ (1/2² - 1/5²)1/λ = 1.097 x 10⁷m⁻¹  (1/4 - 1/25)1/λ = 1.097 x 10⁷m⁻¹  (0.25 - 0.04)1/λ = 1.097 x 10⁷m⁻¹ (0.21)1/λ = 2.3037 x 10⁶m⁻¹ Finally, invert this result to find the wavelength λ:λ = 1 / 2.3037 x 10⁶m⁻¹ ≈ 4.34 x  10⁻⁷m  or 434 nm

Thus, the wavelength of the radiation released is approximately 434 nm.

A student moves a box of books down the hall
by pulling on a rope attached to the box. The
student pulls with a force of 174 N at an angle
of 35.0 above the horizontal. The box has a
mass of 25.1 kg, and μk between the box and
the floor is 0.25.
The acceleration of gravity is 9.81 m/s2 .
Find the acceleration of the box.
Answer in units of m/s2 ...?

Answers

Final answer:

The acceleration of the box can be found by analyzing the forces acting on it. The net force in the horizontal direction is equal to the difference between the applied force and the force of friction. By applying Newton's second law of motion, we can solve for the acceleration of the box, which is found to be 3.94 m/s^2.

Explanation:

To find the acceleration of the box, we need to analyze the forces acting on it. The student is pulling the box with a force of 174 N at an angle of 35 degrees above the horizontal. The weight of the box, which is the force due to gravity, can be found using the formula: weight = mass * acceleration due to gravity. In this case, the weight is (25.1 kg) * (9.81 m/s^2) = 245.931 N.

Next, we need to resolve the force applied by the student into horizontal and vertical components. The horizontal component can be found using the formula: F_horizontal = F * cos(angle). In this case, F_horizontal = 174 N * cos(35) = 143.089 N.

The net force acting on the box in the horizontal direction is the difference between the applied force and the force of friction. The force of friction can be found using the formula: force of friction = coefficient of friction * normal force. In this case, the normal force is equal to the weight of the box, so the force of friction = (0.25) * (245.931 N) = 61.483 N.

Finally, we can find the acceleration of the box using Newton's second law of motion, which states that force = mass * acceleration. In this case, the net force acting on the box is F_horizontal - force of friction, so the equation becomes: F_horizontal - force of friction = mass * acceleration.

Plugging in the values, we get: 143.089 N - 61.483 N = (25.1 kg) * acceleration. Solving for acceleration, we find that the acceleration of the box is 3.94 m/s^2.

Final answer:

The acceleration of the box is 5.66 m/s^2

Explanation:

To find the acceleration of the box, we need to split the applied force into horizontal and vertical components. The horizontal component of the force can be found by multiplying the magnitude of the force by the cosine of the angle:

Fhorizontal = 174 N * cos(35.0°) = 142.14 N

With the horizontal force and mass of the box, we can use Newton's second law to calculate the acceleration:

Fhorizontal = m * a

142.14 N = 25.1 kg * a

a = 142.14 N / 25.1 kg = 5.66 m/s2

Therefore, the acceleration of the box is 5.66 m/s2.

Which of the following best summarizes Dalton's atomic theory?
A. All matter is made of the same type of atoms.
B. All matter is made of atoms that may change the way in which they are combined during a chemical reaction.
C. All matter is made of atoms and atoms of one type of matter do not combine with atoms of other types of matter.
Which of the following best summarizes Dalton's atomic theory?
A. All matter is made of the same type of atoms.
B. All matter is made of atoms that may change the way in which they are combined during a chemical reaction.
C. All matter is made of atoms and atoms of one type of matter do not combine with atoms of other types of matter.

Answers

Answer:

B. All matter is made of atoms that may change the way in which they are combined during a chemical reaction.

Explanation:

Dalton stated that all matter has atoms which are the indestructible building blocks of matter.

Different types of substances have different types of atoms. The atoms vary in shape and size.

Compounds are substances which are formed by the combination of elements. They are formed by chemical processes.

Compound have a mixture of different atoms in a specific ratio.

Scientists use the Celsius scale as the metric unit of temperature. t/f

Answers

True. But they also use the Kelvin scale.

Scientists use the Celsius scale as the metric unit of temperature.

True, scientists primarily use the Celsius scale in many scientific contexts for temperature measurements. The Kelvin scale is also commonly used for absolute temperature measurements.

Jack tries to place magnets on the door of his refrigerator. He observes that the magnets don’t stick. He guesses that the door of the refrigerator is made of a nonmagnetic substance. What stage of scientific investigation does his guess represent?

Answers

I think an education guess for this one because he is thinking about what to guess probably.

Answer:

Constructing a Hypothesis

Explanation:

Jack already made his observation (magnet doesnt stick).  After that Jack then guesses that the fridge was made of nonmagnetic substance.  Now he must construct a hypotesis.

A car has an engine which delivers a constant power. It accelerates from rest at time t = 0, and at t = t0 its acceleration is a0. What is its acceleration at t = 2t0? Ignore energy loss due to friction. ...?

Answers

Here is the answer of the given problem above.
Use this formula: P = FV = ma*at = ma^2 t
Substitute the values, and therefore, we got m(a0)^2t = m(x)^2 (2t)
then, solve for x which is the acceleration at 2t.
The answer would be a0/sqrt(2).
Hope this answers your question. Thanks for posting.
Final answer:

The acceleration a0 at time t0 in a car with a constant power engine will be greater than the acceleration at time 2t0. Due to the increased velocity over time, the acceleration decreases when power is constant, because power is the product of force and velocity.

Explanation:

A car with a constant power engine accelerates from rest. If the acceleration at time t = t0 is a0, then the car's acceleration at time t = 2t0 will be different because the speed has increased, and acceleration is inversely proportional to velocity when power is constant. Since power (P) is equal to force (F) times velocity (v), and acceleration (a) is force divided by mass (m), as v increases, a must decrease if P is constant.

To calculate the exact acceleration, we would need to integrate the power over time to find velocity as a function of time and then differentiate to find the acceleration. However, without specific numerical values or additional information about the mass of the car or the constant power delivered by the engine, we cannot provide a precise numerical answer. Conceptually, the acceleration at time t = 2t0 is less than the acceleration at time t = t0 if the engine delivers constant power.

A barometer is used to measure air pressure. true or false.

Answers

the answer is "True" .

Answer:

true

Explanation:

edge 2021

Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by is 4.0 seconds. The markings on the post submerged in water indicate that the water level fluctuates from a trough at 6.0 meters to a crest at 9.0 meters. What is the period of the wave?

Answers

period of wave is time takes wave to pass the fixed point.
you have been said that it's 4s, that's the answer 
T = 4s

Answer;

The period of the wave is 4 seconds

Explanation;The period of a wave or periodic time is the time taken for one complete oscillation to occur. In this case, one complete oscillation occurs when the wave moves from one crest to the next or a trough to the next. This takes 4 seconds. Therefore the period is 4 seconds.Frequency on the other hand is the number of oscillations by a wave in one second. Thus, f = 1/T, that is frequency is the reciprocal of periodic time.

Friction is generated when ______ interfere with each other on sliding surfaces. ...?

Answers

According to its definition, friction is generated when atoms interfere with each other on sliding surfaces.

Answer:

its molecules

Explanation:

How Close to the edge of a 20kg table, can a 66kg person sit without tipping it over?
The table is 2.2m long and there are two legs placed 0.5 m from each end of the table. with 1.2 meters between the two legs. the top of the table is 0.80 m tall

Answers

m1d1=m2d2
because gravity is constant to both side. Calculate the mass per length of the table, and find the amount of weight for one side of the leg and then multiply it by the length, which is 1.7m. The divide the product by the mass of the guy to get the length from the table.
and the answer is 0.3981m.

Answer:

0.318 m

Explanation:

If the moment due to the person’s weight is equal to the moment due to weight of table, table will not tip over.

Moment due to table = Moment due to person         ………… (i)

Moment due to table = (20)(9.8)(0.6) = 117.6 Nm

Moment due to person = (66)(9.8)(0.5-x) = 323.4 – 646.8x Nm

Where, x is the distance of person from the edge.

By putting values in equation (i),

117.6 = 323.4 – 646.8x

solving for x,

x = 0.318 m

When a force of 20.0N is applied to a spring, it elongates 0.20m. Determine the period of oscillation of a 4.0kg object suspended from this spring

Answers

So what we can do is apply the Hooke's law wich states that
F = -kx ( P.S the -ve sign means opposite in direction ) 
Also we will need to determine the spring's constant with the formula:
k = F / x 
Where F = the force ( = 20 N ) 
x = the displacement of the end of the spring from it's position ( = 0.20 m ) 
k = the spring's constant ( = unknown ) 
So this would be: k = 20 / 0.20 = 100 N/m 
The period of oscillation of 4 kg : T = 2 * pi * square root m / k 
T = 2 * pi * square root 4 / 100 
T = 1.256 seconds
Hope it helps

Final answer:

The period of oscillation of a 4.0kg object suspended from a spring when a force of 20.0N elongates it by 0.20m is approximately 1.26 seconds, calculated using the formula T = 2π√(m/k) where k is the spring constant.

Explanation:

The period of oscillation for a mass suspended from a spring depends on the spring constant k and the mass m. The period T is given by the formula T = 2π√(m/k), where m is the mass in kilograms and k is the spring constant in newtons per meter.

To find the spring constant, we use the fact that when a force F is applied to a spring, it stretches by a distance x, and F = kx. Thus, k = F/x. In this case, a force of 20.0N elongates the spring by 0.20m, so the spring constant k is 100 N/m.

With k = 100 N/m and m = 4.0 kg, we can calculate the period T as follows:

T = 2π√(4.0kg / 100 N/m) = 2π√(0.04)

T ≈ 1.26 seconds. Therefore, the period of oscillation of a 4.0kg object suspended from this spring is approximately 1.26 seconds.

Our verbal and nonverbal _a______ provides clues to our attitude on a given topic.

Answers

Our verbal and nonverbal (LANGUAGE) provides clues to our attitude on a given topic.

What force is exerted on a machine?

Answers

lbs pounds . it puts pressure on everything

input force :) k have a good day


In any energy transformation, there is always some energy that gets wasted as non-useful heat.
True
False

In any energy transformation, there is always some energy that gets wasted as non-useful heat.
True
False

Answers

The answer is true.

The graph in the figure shows the variation of the electric potential V(x) (in arbitrary units) as a function of the position x (also in arbitrary units). Which of the choices below correctly describes the orientation of the x-component of the electric field along the x-axis?

A. Ex is positive from x = -2 to x = 0, and negative from x = 0 to x = 2.
B. Ex is negative from x = -2 to x = 0, and positive from x = 0 to x = 2.
C. Ex is negative from x = -2 to x = 2.
D. Ex is positive from x = -2 to x = 2.

Answers

Final answer:

The electric field Ex along the x-axis is positive from x = -2 to x = 0, and negative from x = 0 to x = 2, as determined by the change in electric potential V(x) with respect to position x.

Explanation:

The orientation of the electric field Ex along the x-axis is determined by the change in electric potential V(x) with respect to position x. According to the relationship between electric potential and electric field, if the electric potential decreases with increasing x, the electric field is positive, and vice versa. Hence, if we consider the given options, the correct answer should be Option A: Ex is positive from x = -2 to x = 0, and negative from x = 0 to x = 2.

This is because for a positive electric field, the electric potential decreases with increasing position x, which corresponds to the behavior from x = -2 to x = 0. Similarly, a negative electric field corresponds to an increasing electric potential with increasing x, which aligns with the behavior from x = 0 to x = 2.

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What happens during evaporation

Answers

Liquids is transformed feom a liquid state into a gaseous state. this can happen at any temperature
During Evaporation, Liquid get transferred from it's phase to "Gases Phase"

And remember it happens within certain limit of temperature, 'cause if you increase temperature, it will start "Boiling", which is different!

Hope this helps!
Other Questions
Which word in the sentence is an adjective that tells how many? Few people came to that great concert Wednesday night because of the heavy rain.A.WednesdayB.fewC.greatD.heavy Determine if each function is linear or nonlinear.Select each function and put it in the correct column its suppose to go in. Ex: A is linear or non.Linear: Non-Linear:A) y = x/2 - 19B) 2y = x to the 2nd powerC) 13y = 1/3x + 5 D) y = x + 25E) y = x Why China did not want to trade with Britain? Were the Soviets afraid of Americans as much as Americans were afraid of them? One loss mechanism for ozone in the atmosphere is the reaction with the ho2 radical what is the rate law expression What is the shape of s dna molecule? which would conduct electricity well in solution: a strong electrolyte, a weak electrolyte, both types of electrolytes, or neither type of electrolyte? While in milan, da vinci created _____ for the milan cathedral dome. select all that apply. What is the purpose of terza rima?to elevate languageto honor the classicsto move forward in readingto aid translation of Italian HELP!!! What does this irony mean from A Cold Greeting by Ambrose Bierce: "It had been taken a week before his death."What does it mean? I'm having trouble knowing what it means. Why did Richard Nixon resign as president?His political philosophies were changing.He could not handle the pressures of the Vietnam War.He wanted to avoid removal from office.His health was failing him. y = 3xx + 2y = -21Solve the system. Write your answer as an ordered pair (x, y) Where was Alexander the Great from? How far did his empire stretch? Help pls hello pls hello hello Which of the following is something that will not affect your homeowners insurance premium? a. the distance of the home from a school b. the distance of the home from a flood plain c. the distance of the home from a fire station d. the distance of the home from a fire hydrant But a caged bird stands on the grave of dreamshis shadow shouts on a nightmare screamhis wings are clipped and his feet are tiedso he opens his throat to sing."What is the figurative meaning of the excerpt?A.The birds cage has been placed so that it overlooks a cemetery.B.The birds cage is so small that it cramps his wings and feet.C.The caged bird has had his hope destroyed.D.The caged bird is thinking very serious thoughts. what is the place value of the diget 6 in the decomal number 4.769 why did the Mayans create a detailed writing system? to keep track of trade to keep track of the seasons to keep track of political rulesto keep track of families Cylinder has a height of 14 centimeters and its circle bases have a radius of 10 centimeters. find the surface area of the cylinder.2(100) + 140square centimeters1,400+ 140square centimeters2(100) + 280square centimeters2(1,400) + 2(140) square centimeters Why do elements in a group on the periodic table have similar chemical properties? a. similar atomic masses b. similar atomic numbers c. same number of outermost electrons d. same number of protons Steam Workshop Downloader