The correct answer is A. Direction
Explanation:
The word "displacement" is used to describe the change in the position of a body or object. Moreover, displacement involves direction (vector of movement) because it considers not only the distance the body moved but also the initial and final position of it. Indeed, the displacement is determined by drawing a straight line between point A (initial position) and point B (final position), which helps to determine the direction vs. movement of the body. According to this, displacement is distance combined with direction.
Displacement of an object is the distance of that object combined with the direction. Option A is the correct option.
What is displacement and distance?Displacement is the shortest distance between the initial point to the final point. Displacement is the vector quantity , which means it has both magnitude as well as direction.
Let suppose a object move on a circular path, and stop where, the object started taking a full round. Then the displacement travelled by the object is zero, as the initial and final point is same and body does not displace any amount from its initial position.
Distance is the total amount of space between the two points, in a particular path. Distance is the scaler quantity, which has only magnitude and not the direction.
Let suppose a object move on a circular path, and stop where, the object started taking a full round. Then the distance travelled by the object equal to the circumference of the circular path.
As displacement is the vector quantity while the distance is scaler quantity. This means that the displacement has both magnitude as well as direction, whereas the distance has only magnitude and not the direction.
Thus, by adding the direction with the distance travelled by an object gives the displacement of that object.
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A person walks 25.0° north of east for 3.10 km. How far due
north and how far due east would she have to walk to arrive at
the same location?
Explanation:
Use sine and cosine to find the vertical and horizontal components.
31.0 km × sin 25.0° = 13.1 km north
31.0 km × cos 25.0° = 28.1 km east
She would have to walk 13.1 km north and 28.1 km east.
The ampere is a unit of which physical quantity?
For this case we have by definition, that the Ampere, is the unit of electric current intensity.
For its part, the electric current is a measure of the velocity at which the electric charge flows.
The symbol of the current is A. We have that 1 Ampere is equivalent to an electric charge of a coulomb per second.
[tex]1A = \frac {1C} {s}[/tex]
Answer:
[tex]1A = \frac {1C} {s}[/tex]
A cold coke bottle is on the pan of a balance and is left open. What happens to its weight?
Answer:
It's weight would decrease over time.
Explanation:
The cold coke is going to stabilise in the room temperature. This causes the coke to heat up to room temperature. When the coke heats up, some molecules acquire enough kinetic energy that the evaporate. The evaporation of the molecules causes a decrease in weight.
Hope it helped!
Answer:
it's weight will decree over time
Explanation:
because the ice will tern to winter than it will evaporate
V-I graphs for two wires A and B are shown in the figure. If we connect both the wires
one by one to the same battery which of the two will produce more heat per unit time?
Justify your answer
В
(2)
a table with mass 23.5 kg sits on the ground what is the normal force on the table?
a-176 N
b-442 N
c-230 N
d-23.5 N
Answer:
C
Explanation:
There are two forces on the table: weight and normal force. Newton's second law:
∑F = ma
N - mg = 0
N = mg
N = (23.5 kg) (9.81 m/s²)
N = 230 N
The normal force on the table is 230N. The correct option is c.
What is a normal force?The normal force is the force acting on the object of mass m perpendicular to the contacting surface and the support.
Normal force N = mass x gravitational acceleration.
N =mg
Given is the mass of table ,m = 23.5 kg , then the normal force will be
N = 23.5 kg x 9.81 m/s²
N = 230.535N
Thus, the normal force is approximately 230N. The correct option is c.
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The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?
Answer:
2.7
Explanation:
This is because fluorine has an atomic number 9
Answer:
2, 7
Explanation:
Fluorine has 9 electrons and electronic structures are written listing the amount of electrons in each shell/energy level starting from the first one.
The first one can hold a maximum of 2 electrons and the 2nd, 3rd and 4rth can hold a maximum of 8
What frequency will you hear if a truck is driving toward you at 20 m/s sounding a horn of frequency 300 Hz. Assume the speed of sound to be 340 m/s.
Answer:
=319Hz
Explanation:
This question is on sound waves
General formulae;
Frequency of observer= f of source*[ (v of sound+ v of observer)/(v of sound-v of source)]
where f is frequency and v is velocity
Given;
Velocity of sound = 340m/s
frequency of source = 300 Hz
Velocity of observer=0m/s
Velocity of source/truck= 20m/s
Substitute values in the formulae;
Frequency of observer= 300× {(340+0)/(340-20)}
=300×{ 340/320}
=300×340/320
=318.75
=319Hz
state the right hand rule of the direction of magnetic field in a conductor carrying current
Answer:
The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.
Explanation:
gooogle.......
Maya sets up two experiments as shown. What question is Maya most likely trying to answer? How does the type of material used in the core affect the strength of an electromagnet? How does the number of loops of wire affect the strength of an electromagnet? How does the speed at which an iron bar is removed from wire loops affect the strength of an electromagnet? How does the thickness of the wire affect the strength of an electromagnet?
Answer:
D
Explanation:
The correct answer is D
How does the thickness of the wire affect the strength of an electromagnet?
Answer:
How does the thickness of the wire affect the strength of an electromagnet
Explanation:
Generally, electromagnet strength increases with an increase in wire thickness. From the theory of electric circuit, the resistance of an electric wire is inversely proportional to the cross sectional area of the electric wire. Mathematically, we have:
R ∝ 1/A
Where:
R is the resistance of the electric wire; A is the cross sectional area of the wire. Therefore, for a large cross sectional area, the resistance will be very low, and the electric current passing through the electromagnet will be high. This will create a very high magnetic field. Thus, the question that Maya will most likely answer is: How does the thickness of the wire affect the strength of an electromagnet.
PLEASE HELP: Which of the following is true about comets in our solar system?
a. Being mini-stars, they are made of gas.
b. They were discovered in the 17th century.
c. They take roughly the same amount of time to orbit the sun.
d. They all orbit the sun due to the sun’s gravity.
Answer: I think the answer is D. I'm sorry if it is incorrect.
A vector has an x-component
of -309 m and a y-component
of 187 m.
Find the magnitude of the
vector.
Explanation:
The magnitude of a vector v can be found using Pythagorean's theorem.
||v|| = √(vₓ² + vᵧ²)
||v|| = √((-309)² + (187)²)
||v|| ≈ 361
You can find the angle of a vector using trigonometry.
tan θ = vᵧ / vₓ
tan θ = 187 / -309
θ ≈ 149° or θ ≈ 329°
vₓ is negative and vᵧ is positive, so θ must be in the second quadrant. Therefore, θ ≈ 149°.
Answer:
2 answers. Pay attention
Explanation:
Acellus asks you to find Magnitude and vector. The questions are in separate answers. Type in 361 whenever it asks for Magnitude. When it asks for Vector type in 149.
Magnitude is 361
Vector is 149
Which best describes how fluids change as they travel through different portions of the convection currents? They change to solids at the outer portion of the convection currents. They change to solids at the inner portion of the convection currents. They become more dense at the outer portion of the convection currents. They become more dense at the inner portion of the convection currents
Answer:
Fluids become more dense at the inner portion of the convection currentsxplanation:
Fluids become more dense at the inner portion of the convection currents. This is driven by the cyclical pattern where warm, less dense fluid rises and cool, denser fluid sinks. Convection is a key mechanism of heat transfer seen in various natural phenomena.
Convection currents describe the movement caused by the variations in temperature and density within a fluid. **Differences in density** cause less dense, warm regions to rise while more dense, cool regions sink. This process creates a cyclical pattern known as convection. Specifically:
Warm fluid becomes less dense and rises towards the outer portion of the convection current.Cool fluid becomes denser and sinks towards the inner portion of the convection current.Therefore, the correct option is that fluids become more dense at the inner portion of the convection currents. This shows the fundamental principle of convection where heat transfer causes fluid motion, leading to the continuous rising of warm fluid and sinking of cool fluid.
A yellow object on a blue background
appears as
[IE-05)
a. White
b.Black
c. Green
d. Red
A bar magnet cut in half will form a total of
poles.
a)four
b)eight
c)two
Answer:
A bar magnet is exactly 2 poles, if you cut it in half, you would have 4 poles.
Answer:
four
Explanation:
A block of size 20m x 10 mx 5 m exerts a force of 30N. Calculate the
maximum & minimum pressure exerted by the block on ground?hello yeah tell me the answer of this question
Answer:
We know that force applied per unit area is called pressure.
Pressure = Force/ Area
When force is constant than pressure is inversely proportional to area.
1- Calculating the area of three face:
A1 = 20m x 10 m =200 Square meter
A2 = 10 mx 5 m = 50 Square meter
A3 = 20m x 5 m = 100 Square meter
Therefore A1 is maximum and A2 is minimum.
2- Calculate pressure:
P = F/ A1 = 30 / 200 = 0.15 Nm⁻² ( minimum pressure)
P = F / A2 = 30 / 50 = 0.6 Nm⁻² ( maximum pressure)
Hence greater the area less will be the pressure and vice versa.
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Which shows the correct order of steps during the formation of an ionic bond?
Ions are attracted to each other → Electrons are transferred → An ionic compound forms
An ionic compound forms → Ions are attracted to each other → Electrons are transferred
Electrons are transferred → Ions form → Ions are attracted to each other
Ions form → Electrons are transferred → Ions are attracted to each other
Answer:
Before I answer I want to say this Calibri is the superior font and green is the only highlight color.
The correct answer is C: Electrons are transferred → Ions form → Ions are attracted to each other
Explanation:
Generally, an ionic compound is formed between electropositive and electronegative elements.
Normally every element wants to occupy the inert gas configuration in order to be stable. During the ionic bond formation the electropositive metal will lose the electrons and forms cation. The electronegative metal will gain electrons and forms anion.
The cation is positively charged and the ion is negatively charged. Due to the coulombic force of attraction, the ions will be attracted to each other and forms an ionic compound.
One can take the example of NaCl where Na will lose one electron and form. Chlorine will take one electron and form. These ions are attracted and sodium chloride is formed.
Hence the formation of an ionic compound follows these steps-
1- First electrons are transferred.
2-The ions are formed
3-The ions are attracted to form the compound
Ben (55kg) is standing on very slippery ice when Junior (25kg) bumps into him. Junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. Find the speed of ben and junior as they move across the ice after the collision. Give the answer in m/s. describe the work you did to get the answer.
Answer:
2.5 m/s
Explanation:
The total momentum before and after the collision must be conserved.
Before the collision, the total momentum is just given by Junior's momentum, since Ben is at rest. So,
[tex]p_i = m_J u_J[/tex]
where
[tex]m_J = 25 kg[/tex] is Junior's mass
[tex]u_J = 8 m/s[/tex] is the Junior's initial velocity
So we find
[tex]p_i = (25 kg)(8 m/s)=200 kg m/s[/tex]
The final momentum will be equal to the initial momentum:
[tex]p_f = p_i[/tex]
and it can be written as
[tex]p_f = (m_B + m_J) v[/tex]
where
[tex]m_B = 55 kg[/tex] is Ben's mass
v is their final velocity
Solving for v,
[tex]v=\frac{p_f}{m_B + m_J}=\frac{200 kg m/s}{55 kg + 25 kg}=2.5 m/s[/tex]
Haley noticed a small spot on her skin that turned out to be skin cancer. Which treatment is her doctor most likely to use?
Answer:
B.) superficial external beam radiation therapy
Explanation:
This is used for skin cancer, correct on edge.
Superficial radiotherapy refers to radiation that does not penetrate deep into your body. Superficial external beam radiation therapy is used by the doctor for skin cancer.
What is Superficial radiotherapy?External radiation includes superficial radiotherapy. It is used to treat cancer that has spread to or near the skin's surface.
The term "superficial radiotherapy" refers to radiation that does not penetrate deep into your body.
Subtle radiotherapy can be performed using low-intensity x-rays (photons) or electrons. Your doctor will determine which one you require.
This is determined by the size and depth of cancer, as well as its location in the body.
Hence Superficial external beam radiation therapy is used by the doctor for skin cancer.
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A car jack with a mechanical advantage of 6 needs to produce an output force of 600 N to raise a car. What input force is required? 6 N 100 N 600 N 3,600 N
Answer:
Input force = 100N
Explanation:
Formula
Mechanical Advantage = output force / input force.
Givens
MA = 6
Output Force = 600 N
Input Force = ??
Solution
6 = 600 / x
Multiply both sides by x
6x = (600/x)*x
6x = 600
The xs cancel. Now Divide by 6
6x/6 = 600/6
x = 100 N
Answer:
100n
Explanation:
Fluids can flow and change shape to fit their containers. Which two states are
fluids?
Answer: the two states that are fluid are;-
#{1} liquid
#{2} gas
Explanation:
as we know that there are mainly three states of substance
but among them only two of them can fluid and takes the shape of the container that are liquid and gas
Liquids and gases are considered fluids because they flow and adapt to the shape of their containers. Solids do not exhibit this behavior. Hence, the correct answer is Option D.
Matter most commonly exists in four phases: solid, liquid, gas, and plasma. Each state has unique properties:
Solids have a definite shape and volume and resist shearing forces.Liquids have a definite volume but take the shape of their container.Gases have neither a definite shape nor volume and expand to fill their container.Plasmas also have neither a definite shape nor volume.Liquids and gases are considered fluids because they yield to shearing forces and can flow to adapt to the shape of their containers. Solids do not exhibit this behavior.
Therefore, the correct answer is Liquids and gases (Option D).
Complete question:-
Fluids can flow and change shape to fit their containers. Which two states are fluids?
A. Solids and plasmas
B. Gases and solids
C. Solids and liquids
D. Liquids and gases
An unbalanced force can cause an object to change its speed and/or
An unbalanced force can cause an object to change its speed and/or direction. This change in momentum is governed by Newton's second law of motion. Examples of such changes can be observed in phenomena like non-circular motion.
Explanation:An unbalanced force can cause an object to not only change its speed, but also its direction. This phenomenon is explained by Newton's second law, which describes force in terms of its ability to change momentum over time. A force, which can be understood as a push or a pull, always has a size and direction. If we apply a force to an object, the momentum of the object changes in the direction of this applied force.
A clear illustration of this principle can be found in nonuniform circular motion, where a particle can move in a circle and speed up, slow down, or change direction due to an external force. In other words, any change in velocity, meaning in speed or direction, requires an outside force according to Newton's first law, also known as the law of inertia.
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For any object, the greater the force that's applied to it, the greater its ____ will be.
Answer:
For any object, the greater the force that's applied to it, the greater its acceleration will be.
Explanation:
The statement can be explained using Newton's second law of motion that states, "A net Force 'F' applied on a body produces acceleration 'a' in it which is directly proportion to the Force applied and inversely proportional to the mass of the object."
We can conclude:
F ∝ a
Answer:
The other guy is correct. Acceleration
Explanation:
The proper order of the cycle of addiction is
Answer:
The answer would be drug use, addiction, dependence, tolerance, and withdrawal.
Answer:
D. drug use, tolerance, dependence, addiction, and then withdrawal
Explanation: took the test rn on edge 2020
Jason is a body builder. Despite being more fit, he weighs more than his brother Ryan, who is the same height. Which is a possible reason?
A.
Jason has more muscle mass than Ryan does.
B. Jason has more body fat than Ryan does.
c. Jason has more muscle mass and body fat than Ryan does
D. Jason has less body fat than Ryan does.
Answer: C. Jason has more muscle mass than Ryan
Explanation:
you add 800 ml of water at 20c to 800 ml of water at 80c what is the most likely final temperature of the mixture ?
a. 100c
b. 60c
c. 25 c
d.50c
Answer:
d. 50 C
Explanation:
In this problem, we have to add 800 ml of water at 20 Celsius to 800 ml of water at 80 Celsius.
According to the 2nd law of thermodynamics, heat transfers from hot to cold temperature.
The quantity of both the different waters is equal so this makes it very easy. All we have to do is find the mean of both the temperatures:
Final temperature = (20 C + 80 C)/2
= 50 Celsius
Answer: D. 50 C
Explanation:
A theory is a ___.
A. Proposed explanation for an observation
B. Well-rested explanation for a broad set of observations.
C. Summary of the results of many observations.
D. Procedure used to test a proposed explanation.
A theory, in scientific terms, is a well-tested explanation for a broad set of observations. It is supported by a significant amount of evidence from various observations and experiments, and stands up to intense testing and scrutiny.
Explanation:A theory in the context of biology or other scientific fields is most accurately described as a well-tested explanation for a broad set of observations (Option B). It is not merely a proposed explanation for an observation (Option A), a summary of the results of many observations (Option C), or a procedure used to test a proposed explanation (Option D).
A theory is based on a substantial body of evidence gathered from many separate observations and experiments, and it holds up against rigorous testing and scrutiny. For instance, the theory of evolution explains a broad set of observations about the diversity and relatedness of life on Earth.
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A theory is a well-reasoned explanation for a broad set of observations that have been repeatedly tested and confirmed through rigorous scientific processes.
Explanation:A theory in scientific parlance can be best defined as a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation. To clarify, option B. 'Well-reasoned explanation for a broad set of observations.' is the most accurate definition of a theory. Theories are built not only upon isolated observations but moreover robust evidence. They form the backbone of scientific understanding and are not to be confused with a hypothesis which is indeed a proposed explanation and yet to be rigorously tested. While theories may offer a procedure for prediction or explanation, they themselves are not a procedure.
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Four different observers are standing in a straight line on a street and hear a siren from a police car. Each person recorded their observations in the chart shown.
If the people are all lined up on the street at different blocks, and the police siren starts at block 3, which statement describes what block each person is standing at?
Wycleff is on block 1, Lilly is on block 4, Quincy is on block 12, and Emilia is on block 17.
Lilly is on block 1, Wycleff is on block 4, Quincy is on block 12, and Emilia is on block 17.
Lilly is on block 1, Wycleff is on block 4, Emilia is on block 12, and Quincy is on block 17.
Wycleff is on block 1, Lilly is on block 4, Emilia is on block 12, and Quincy is on block 17.
Answer:
D
Explanation:
Wycleff heard a low pitch sound the whole time, so the police car must have been moving away from him. So he was at block 1.
Lilly observed a Doppler effect (change in pitch) first. So the car must have passed her first, so she was at block 4.
Emilia observed a Doppler effect after Lilly. So the car passed her after it passed Lilly, so she was at block 12.
Quincy heard a high pitch sound the whole time, so the police car must have been moving toward him. So he was at block 17.
Wycleff is on block 1, Lilly is on block 4, Emilia is on block 12, and Quincy is on block 17. Therefore, the correct option is option D.
What is doppler effect?The apparent change in frequency caused by an observer moving relative to the wave source is called as that of the Doppler effect, Frequency deviation, or simply Doppler, according to the circumstances. The phenomenon is named after Christian Doppler, the Austrian physicist who originally observed it in 1842.
The entire time, Wycleff would hear a low-pitched sound, suggesting that the police car was moving away from him. As a result, he was in block 1.
The very first thing Lilly saw was a Doppler effect (a pitch change). Due to her position in block 4, the car should really have bypassed her first.
Emilia saw a Doppler effect after Lilly. She was at block 12 whenever the car passed Lilly before overtaking her.
Quincy had been hearing a high-pitched sound the entire time, which signaled that perhaps the police car was coming. As a result, he was in block 17.
Therefore, the correct option is option D.
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A material that provides resistance to the flow of electric current is called a(an) (1 points)
Answer:
A Resistor.
Explanation:
Hope my answer has helped you and if not i'm sorry.
Which of the following types of stars had the smallest initial mass? Blue main sequence Neutron star Red supergiant White dwarf
Answer:
White dwarf
Explanation:
The Hertzsprung-Russell Diagram shows the mass of stars, the color, temperature and their brightness.Stars that lie below the main sequence area such as the White dwarf have the smallest initial mass.A white dwarf star has a mass less than that of the Sun.
Answer:
White Dwarf
Explanation:
explain how waves, energy, and matter are related
Answer:
Mechanical waves need matter to transfer energy while electromagnetic waves do not. ... Waves change direction when they move from one material into another (matter) through the process of refraction. The wave will change direction when the speed of the wave changes.
According to de Broglie's hypothesis, matter is associated with matter waves. Any massive particle moving with a certain velocity can be represented as a superposition of waves whose maxima is the position of the particle.
Relation between waves, energy, and matter:The matter is a physical substance that occupies space and possesses rest mass and volume.Energy is the quantitative property of a material that is transferred from one object to another in order to perform work or to release heat.And Wave is the disturbance of one or more fields in such a way that field values oscillate repeatedly about a stable equilibrium.Waves need matter to travel through it. Energy is needed for a matter to change its state.Learn more about matter waves:
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