Describe how two plates move in relation to each other along divergent plate boundaries?

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Answer 1

At a divergent boundary, plates move away from each other, allowing magma to fill up the cracks in between the plates to form new land. This creates rift valleys and mid ocean ridges.

Related Questions

If white light illuminates a diffraction grating having 790 lines/mm , over what range of angles does the visible m = 1 spectrum extend?

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Final answer:

The range of angles over which the visible m = 1 spectrum extends can be calculated using the equation θ = sin^(-1)(mλ/d), where θ is the angle, m is the order of the spectrum, λ is the wavelength of light, and d is the grating spacing. For a diffraction grating with 790 lines/mm spacing, the range of angles for the visible m = 1 spectrum is approximately 18.42° to 33.57°.

Explanation:

We are given the property of the illuminating light:

790 lines/mm

Which is also equivalent to:

790,000 lines/m

Taking the reciprocal of this value will give us the distance per line:

d = 1 m / 790,000 lines

d = 1.2658 * 10^-6 m

Now we can solve for the range of angles using the formula

λ = d * sin θ

sin θ = λ / d

where λ is the wavelength of light and θ is the angle

Now we know that visible light ranges from 400 to 700 nm, therefore we use these values to find the range.

when λ = 400 nm = 400 * 10^-9 m

sin θ = 400 * 10^-9 m / 1.2658 * 10^-6 m

θ = 18.42°

when λ = 700 nm = 700 * 10^-9 m

sin θ = 700 * 10^-9 m / 1.2658 * 10^-6 m

θ = 33.57°

Therefore the range of angles is 18.42° to 33.57°.

What is the name of the concave depression in the central retina for gathering light?

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Fovea is the name of the concave depression in the central retina for gathering light.
Retina is the thin, transparent tissues that lie adjacent to the choroid, contains rods and cones. Retina senses light and send images to the brain. A healthy, intact retina is a key to clear vision. Fovea is responsible for sharp central vision.

What is the range of wavelengths for fm radio (88 mhz to 108 mhz)?

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The range of wavelengths for FM radio waves is approximately 2.78 meters to 3.41 meters.

What is wavelength?

Wavelength is a physical property of a wave that refers to the distance between two consecutive points on a wave that are in phase, i.e., they have the same position in their cycle of motion. It is the distance over which the wave's shape repeats itself.

In other words, the wavelength is the distance between two successive peaks or troughs of a wave. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters or nanometers.

The wavelength of a wave is determined by its frequency and the speed at which it travels through a medium. In general, waves with higher frequencies have shorter wavelengths, while waves with lower frequencies have longer wavelengths.

Wavelength is an important property of many types of waves, including light waves, sound waves, and radio waves. Understanding the properties of wavelength is crucial in fields such as physics, engineering, and telecommunications, as it affects how waves interact with materials, how they can be detected and measured, and how they can be transmitted over long distances.

Here in the Question,

The ranges of wavelengths for FM (frequency modulation) radio waves can be calculated using the formula:

wavelength (in meters) = speed of light (in meters per second) / frequency (in hertz)

The frequency range for FM radio is 88 MHz to 108 MHz. To calculate the corresponding wavelength range, we can use the speed of light, which is approximately 299,792,458 meters per second:

For the lower end of the FM radio frequency range (88 MHz), the wavelength is:

wavelength = 299,792,458 m/s / 88,000,000 Hz ≈ 3.41 meters

For the upper end of the FM radio frequency range (108 MHz), the wavelength is:

wavelength = 299,792,458 m/s / 108,000,000 Hz ≈ 2.78 meters

Therefore, the range of wavelengths for FM radio waves is approximately 2.78 meters to 3.41 meters.

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In a scientific experiment, the variable manipulated or controlled by the experimenter is called the

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Answer:
The variable manipulated or controlled by the experimenter is called the independent variable.

Example:
If the flow velocity at the bottom of a tank is measured by varying the height of water in the tank, we are measuring velocity as a function of water height.
Therefore,
water height = independent variable (controlled)
velocity = dependent variable (measured in response to water height).

Mathematically,
v = f(h)
where v = response variable (dependent)
h = controlled variable (independent).

Independent.

The independent variable is manipulated and the effects are noted.

A body is placed on a rough inclined plane. Why does the frictional force decrease with the increase of angle of inclination

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The frictional force is directly proportional to the force that is perpendicular on the surface.

When the body is placed on a horizontal level with zero inclination, the only force acting on the body is the gravitational force which always pulls the body down. The gravitational force, in this case, is the perpendicular force to the surface. Accordingly, this entire force is used to generate friction

Now as the inclination of the surface increases, the gravitational force is no longer the perpendicular force of the body, its value decreases, which means only a part is used to generate frictional force. Consequently, frictional force decreases.

When the inclination reaches 90 degrees, the gravitational force does not act along the normal and accordingly, no friction force is generated.

Scientists have determined that light is made up of electromagnetic waves light is made up of particles called photons light is both a longitudinal wave and a particle both a and b

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light is made up of photons and elcectromagnetic waves

Telephone companies are replacing older, analog lines with digital lines because

A. wireless transmissions can be used only for short distances. B. computers can now be equipped with modems to translate transmissions. C. digital lines are less expensive. D. data is transmitted more quickly over digital lines.

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Telephone companies are replacing older, analog lines with digital lines because data is transmitted more quickly over digital lines. Today, the telephone services and systems are provided via digital lines. Digital telephony uses technology that breaks the audio signal into binary code. Binary codes can be easily send and much quickly transmitted.

After using a thermometer where should it be placed

Answers

After using a thermometer, it is best to wash it so that the next person who is going to use it won't get the flu or illness that the person who used it before. In washing it, it is best to wash it, rinse it thoroughly, sanitized it with the use of alcohol to remove excess germs and bacteria that could be still stuck on it and lastly, air dry. When dried, placed it on its proper case to avoid it from breaking or being contaminated.

Kepler's second law implies what about planetary motion?

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It implies the following thing. If you draw a vector connecting the Sun and a planet this vector will be covering equal areas in equal time spans. Say, each second, this vector covers N square meters, each 2 seconds - 2N square meters and so on

His 2nd law says that the line from the sun to the planet sweeps over equal areas in equal periods of time. This implies that the planet has to move faster in its orbit when it's closer to the sun (like the Earth is in January), and slower when it's farther from the sun (like the Earth is in July).

What is the thickness of the mantle in km?

Answers

The mantle is about 2900 km.

The mantle is a solid bulk that lies in the interior of the Earth. It is located between the outermost thin layer of the Earth's crust and the super-heated, dense core of the Earth.
The mantle forms about 84% of the total volume of the Earth.

Final answer:

The mantle of the Earth is approximately 2900 kilometers thick. It is the largest part of the solid Earth, extending from the base of the crust to the top of the core. It is mainly solid, but can deform and flow under extreme conditions.

Explanation:

The Earth's mantle is the largest part of the solid Earth, stretching from the base of the crust downward to a depth of 2900 kilometers. This part of the Earth is largely solid, but due to the extreme temperatures and pressures found in the mantle, the rock can deform and flow slowly. The density in the mantle increases from about 3.5 g/cm³ at the top to more than 5 g/cm³ at the bottom due to the compression produced by the weight of the overlying material.

Samples of upper mantle material are occasionally ejected from volcanoes, allowing scientists to conduct a detailed analysis of its chemical composition. After the mantle, at a depth of 2900 kilometers, we encounter the Earth's core, which is dense and metallic. The core has a larger diameter of 7000 kilometers and is made up of a liquid outer layer and a solid inner layer.

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A glass is half-full of water, with a layer of vegetable oil (n 5 1.47) ﬂ oating on top. a ray of light traveling downward through the oil is incident on the water at an angle of 71.48. determine the critical angle for the oil–water interface and decide whether the ray will penetrate into the water.

Answers

The critical angle is the angle of incidence which gives 90 degrees refraction of light. If the incident angle is less than the critical angle, the ray of light will penetrate the second medium and if the incident angle is more than the critical angle, the ray will not penetrate and total internal reflection will occur.

So, to decide whether the ray will penetrate or not, we need to calculate the critical angle and compare it with the incident angle.

critical angle is calculated using the following rule:
critical angle = arcsin (n2 / n1) where
n1 is that of the oil = 1.47
n2 is that of the water = 1.33
therefore,
critical angle = arcsin (1.33 / 1.47) = 64.79 degree

Since the incident angle is greater than the critical angle, therefore the ray will not penetrate and will undergo total internal reflection.

under what conditions would a scale record a weight for an object which is equal to the magnitude of the gravitational force on the object?

Answers

In a non accelerated frame, also called inertial frame, when no additional forces are acting upon the body.

For instance, a scale in free fall will not record the weight, but zero, like the astronauts. But also, if someone is pulling the object or pushing it, the scale will record some other value.

answer:if there are no external forces acting on the object

Explanation:

under what conditions would a scale record a weight for an object which is equal to the magnitude of the gravitational force on the object?

If gravity and the normal reaction force are the only forces acting on the body, and the body is at rest or moving at constant velocity, the normal force and the weight are equal and opposite. Also if there are no influence of external forces

and air resistance is negligible.

from newtons law of motion which states that the rate of change in momentum is directly proportional to the force applied

f=km(v-u)/t

f=kma

where k is the constant and equal to 1

f=ma

which is an organic compound?

Answers

An organic compound is any large class of chemical compounds which one or more carbon atoms are covalently bonded with another element.
For example;
Carbon and nitrogen bonded together are what break down compost.

Determine the rate of a reaction that follows the rate law:rate = k[A]m[B]n, where:k = 1 × 10-2[A] = 2 M[B] = 3 Mm = 2n = 1

Answers

We determine the rate of a reaction from the given rate law by substituting the given concentrations and the order of the substances. We calculate as follows:

rate = k[A]^m[B]^n
rate = (1 x 10^-2) [2]^2 [3]^1
rate = 0.12 M /s

The rate law of a reaction is an expression that is related to the reaction rate. The parameters used are the concentration or the pressure of the reactants in the reaction. An example would be:

A = B + C

The rate law would be:

Rate = k[A] where k is the reaction rate constant and determined by doing experiments

Final answer:

The rate of the reaction is calculated by substituting the given values into the rate law, resulting in a rate of 0.12 M/s, with the rate constant k having units of mol² L²/s for this reaction.

Explanation:

To calculate the rate of a reaction with the given rate law, we insert the provided values into the rate equation: rate = k[A]m[B]n. With the values k = 1 × 10-2, [A] = 2 M, [B] = 3 M, m = 2, and n = 1, the rate is calculated as follows:

rate = (1 × 10-2 M-1s-1)(2 M)2(3 M)1

rate = 1 × 10-2 M-1s-1 × 4 M2 × 3 M

rate = 0.12 M/s

The rate constant k has the units necessary to provide the rate in terms of mol/L/s, which for this second-order reaction in [A] and first-order in [B] (total order: 3), is mol-2 L2/s.

It is ethical to use deceptive methods in research when the scientific goals of the project can be achieved by non-deceptive methods. nih

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In general, it is unethical to be deceptive when doing science, especially if the situation doesn't require it. However, there are some cases where not be deceptive would make gathering data or preforming the experiment much much more difficult. My mind goes to psychology experiments where subjects are told they're conducting a study on something different than what they're told the study is on, so that way the subjects act more like their normal selves and not like they're being studied. It doesn't harm the subjects and makes gathering data much easier and more reliable. The only option for these types of experiments to gather data if they didn't lie to their subjects would be to try to record real world situations where their research is relevant, which would be time consuming, much harder and introduce countless new variables making the actual findings much harder to isolate. So long as no one is harmed and reputations aren't ruined, being deceptive is acceptable so long as the appropriate caution is given and the information gained from being deceptive is valuable.

0 the period of a pendulum is the time it takes the pendulum to swing back and forth once. if the only dimensional quantities that the period depends on are the acceleration of gravity, g, and the length of the pendulum, ℓ, what combination of g and ℓ must the period be proportional to? (acceleration has si units of m ∙ s-2.).

Answers

g has the dimension m/s² and l has the dimension of m

You need only seconds. You have to get rid of metres completely, so you have to divide g over l. Then you get 1/s². Finally, you raise this to the power -1/2.

Eventually you get
[tex]T = A\sqrt{l/g}[/tex]
where A is a certain constant. Rigorous calculation show that this constant is 2π

Final answer:

The period of a pendulum is proportional to the square root of the ratio of its length to the acceleration of gravity.

Explanation:

The period of a pendulum depends on the acceleration of gravity, g, and the length of the pendulum, ℓ. In order to determine the combination of g and ℓ that the period is proportional to, we can use the method of dimensional analysis. The only possible combination is the square root of the ratio of ℓ to g, which gives us T ∝ √(ℓ/g).

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A bird experiences an acceleration of -1.80 m/s^2 for 3.81 s, and ends up 26.5 m to the left of its starting point. What is its final velocity?

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To solve this problem, we can assume that the motion is linear so that we can use the equations:

Xf = Xi + v0 t + 0.5 a t^2 ---> 1

vf = v0 + a t ---> 2

where Xi = initial distance = 0, v0 = initial velocity, Xf = final distance = 26.5 m, a = acceleration = - 1.80 m/s^2, t = time = 3.81 s, vf = final velocity

Substituting the given values into equation 1 to find for v0:

26.5 = v0 (3.81) + 0.5 (-1.80 m/s^2) (3.81)^2

3.81 v0 = 39.56449

v0 = 10.38 m/s

Using equation 2 to find for vf:

vf = 10.38 + (-1.80) (3.81)

vf = 3.53 m/s

What is the definition of a point object?

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Point object is an expression that is used in Kinematics. It refers the object whose dimensions are ignored or neglected and is treated as a dot object to simplify the calculations. When the object is treated as a point object it means the whole mass is summed in one point, you can imagine it as a sphere which has the mass and the radius is 0...

Traffic officials indicate, it takes longer to ______ when you drive fast.

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The answer in the blank is that it is difficult to accelerate at decelerate the vehicle when it is on a fast speed because having a fast speed makes it difficult to adjust the meter as well as if you try to decelerate the vehicle, it could burn out the tires and engine as it is in the fast speed, in accelerating it, it could also be complicated because it would only make the car faster enough that you may no longer control of how to stop it.

Answer:

Stop

Explanation:

when we drive fast it will be take longer time to stop.

As car is moving fast the acceleration will be to decelerate we have to apply brake.

By applying brake the car decelerates very fast as deceleration is the change in velocity per unit time. change in velocity is very high so deceleration will be high.

when the brake is applied the distance travel by the high speed vehicle will be more than the vehicle moving at slow speed.

What evidence suggests that Earth attracts or pulls on objects?

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Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass.

I'm pretty sure that gravity is the biggest piece of evidence. Are you looking for evidence of gravity or something?

When a bus moves forward after stopping to pick up passengers, why do the passengers feel as though they are being pushed back against their seats?

A. The passengers' bodies tend to remain still relative to the ground while the bus is moving.

B. The forward force caused by the inertia of the bus pushes back on the passengers' bodies.

C. The force of gravity tries to hold the bodies of the passengers in place.

D. The body of the bus moves faster than the seats on the bus due to inertial forces.

Answers

The answer would be D.

An incident light ray strikes water at an angle of 20 degrees. The index of refraction of air is 1.0003, and the index of refraction of water is 1.33. The angle of refraction rounded to the nearest whole number is °.

Answers

In order to find the angle of the refracted ray, we may use the Snell's law (also known as Snell–Descartes law and the law of refraction). This law states that the ratio of the sines of the angles of incidence and refraction is constant for a given wave when it passes through two different media such as water, glass, or air.
In mathematical form, this is:

n₁sin(∅₁) = n₂sin(∅₂)
Where:n is the refractive index.

Plugging in the values given into the equation:
1.0003 * sin(20°) = 1.33 * sin(∅)
∅ = 14.91
The angle of refraction is 15°.

Answer:

Explanation:

Electrical shock is more likely to be fatal when the path of current is through the

Answers

Electrical shock is most likely to be fatal when the path of the current is through the heart.

A steel cylinder with a moveable piston on top is filled with helium (He) gas. The force that the piston exerts on the gas is constant, but the volume inside the cylinder doubles, pushing the piston up.

Which of the following answers correctly states the cause for the change described in the scenario?

The temperature increased.
The density of the helium atoms decreased.
The pressure decreased.
The helium atoms increased in size.

Answers

The answer for this question is B. Let me know

A 25 N force at 60° is required to set a crate into motion on a floor. What is the value of the static friction?

Answers

The normal force of the force given is calculated through the equation,

Fn = F(sin θ)
where Fn is the normal force, F is the force, and θ is the angle.

Fn = (25 N)(sin 60°) = 21.65 N

The x-component of the force applied is,
Fx = (25 N)(cos 60°) = 12.5 N

The value of the coefficient of static friction is calculated through the equation,
F = μFn
μ = Fx / Fn = 12.5 N / 21.65 N = 0.577

A car slow down at -5.00 m/s2 until it comes to a stop after traveling 15.0 m. What was the initial speed of the car? (Unit=m/s)

Answers

Good formula to remember!

V_F^2 = V_0^2 + 2 * a * d

V_F = final speed
V_0 = initial speed

0^2 = V_0^2 + 2*(-5)*15 = V_0^2 -150,

V_0 = sqrt(150) = 12.25 m/s

Answer:

12.25 m/s

Explanation:

If a car slows down at -5 m/s2 and it comes to a stop after traveling 15 m we just have to use the next formula:

[tex]Vf^{2} =Vo^{2} +2ad[/tex]

Now we know that the final velocity is 0, so by inserting our data into the formula it would look like this:

[tex]Vf^{2} =Vo^{2} +2ad[/tex]

[tex]0 =Vo^{2} +2(-5m/s^{2})(15m)[/tex]

[tex]-Vo^{2}= -150m^{2}/s^{2}[/tex]

[tex]Vo^{2}= 150m^{2}/s^{2}[/tex]

[tex]Vo= \sqrt{150m^{2}/s^{2}}[/tex]

[tex]Vo= 12.25m/s[/tex]

In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 3.40 mm . what is the difference between these wavelengths?

Answers

The solution would be like this for this specific problem:

Given:

diffraction grating slits = 900 slits per centimeter

interference pattern that is observed on a screen from the grating = 2.38m

maxima for two different wavelengths = 3.40mm

slit separation .. d = 1/900cm = 1.11^-3cm = 1.111^-5 m

Whenas n = 1, maxima (grating equation) sinθ = λ/d
Grant distance of each maxima from centre = y ..
As sinθ ≈ y/D y/D = λ/d λ = yd / D

∆λ = (λ2 - λ1) = y2.d/D - y1.d/D
∆λ = (d/D) [y2 -y1]

∆λ = 1.111^-5m x [3.40^-3m] / 2.38m .. .. ►∆λ = 1.587^-8 m

What do astronomers mean by light pollution?

Answers

Light pollution is influence of the light on earth (for example, street lighting) which interrupt observations. For example, if you are in a street during the night and street lights are turned on you won't see stars, but if lighting is turned off or if you go out of town you will see stars above.

Final answer:

Light pollution is the excessive or misdirected artificial light that brightens the night sky, making it difficult to see celestial objects. It is a concern for astronomers, environmentalists, and those worried about global warming.

Explanation:

Light pollution refers to the excessive or misdirected artificial light that brightens the night sky, making it difficult to see celestial objects such as planets and stars. This phenomenon is of concern not just to astronomers, but also to environmentalists and those who are worried about global warming. It can disrupt the natural life cycle of animals and lead to unnecessary expenses and energy consumption. Light pollution can be measured and compared using citizen science projects like Globe at Night, and organizations like the International Dark-Sky Association work to address this issue.

If the building absorbed so much heat that it turned into a liquid, then it would have undergone a phase change known as _____.

Answers

The building is in solid phase. Its molecules are arranged in a ver compact manner that is why it takes a definite shape and volume. When it is heated, the kinetic energy of the molecules increases. This is characterized by more frequent collisions. The rise in temperature causes the molecules to move rapidly by vibrating. When it reaches an amount of energy that causes the solid to change phase, this is called the latent energy. The molecules break their form and move farther away from each other until it resembles that of a liquid melting. This phase change is known as melting. The energy that must be reached to achieve melting is the latent heat of fusion.

If the building absorbed so much heat that it turned into a liquid, then it would have undergone a phase change known as Melting.

The work done in pushing a tv set a distance of 2 m with an average force of 20 n is

Answers

Work, in physics, is the force exerted or applied in order to move an object to a certain distance. It is calculated from the product of force and the distance. It is the energy that is transferred during the movement. It will have units of N-m which is equivalent to J, a unit of energy. We calculate as follows:

Work = Force x distance
Work = 20 N x 2 m
Work = 40 N-m or 40 J

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