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3 years ago

Question 12 of 20

Physics

1 answer:

zmey [24]3 years ago

5 0

Answer:

Explanation:

I gogled it soo yeah good luck sorry if I'm wrong

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PLEASE HELP! Explain how energy travels outward from the core and is emitted from the Sun. Include what happens in each layer of

xxMikexx [17]

Fusion occurs in the Sun's core, releasing energy that is transferred outward. Once in the radiative zone, gamma rays are transferred by radiation. They are converted to other types of photons, which move into the convective zone, where they are transferred by convection. Finally, energy is emitted from the photosphere.

8 0

3 years ago

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A student at the top of a building of height h throws ball A straight upward with speed v0 (3 m/s) and throws ball B straight do

Flauer [41]

Answer:same

Explanation:

Given

ball A initial velocity=3 m/s(upward)

Ball B initial velocity=3 m/s (downward)

Acceleration on both the balls will be acceleration due to gravity which will be downward in direction

Both acceleration is equal

For ball A

maximum height reached is $h_1=\frac{3^2}{2g}$

After that it starts to move downwards

thus ball have to travel a distance of h_1+h(building height)

so ball A final velocity when it reaches the ground is

$v_a^2=2g\left ( h_1+h\right )$

$v_a^2=2g\left ( 0.458+h\right )$

$v_a=\sqrt{2g\left ( 0.458+h\right )}$

For ball b

$v_b^2-\left ( 3\right )^2=2g\left ( h\right )$

$v_b^2=2g\left ( \frac{3^2}{2g}+h\right )$

$v_b=\sqrt{2g\left ( 0.458+h\right )}$

thus $v_a=v_b$

5 0

3 years ago

alexandr402 [8]

Answer:

1.92 m/s

Explanation:

Velocity is defined as the distance moved per unit time with consideration of the direction. The direction aspect differentiates speed from velocity since for speed, we don't need to consider the direction.

$v=\frac {d}{t}$

Distance moved for circular path is equal to its circumference and the circumference is given by $2\pi r$ where r is the radius and substituting $2\pi r$ for d then

$v=\frac {2\pi r}{t}$

Substituting 5.5 m for r and 18 s for t then

$v=\frac {2\pi \times 5.5}{18}=1.919862177 m/s\approx 1.92 m/s$

To the nearest hundredth, the velocity is 1.92 m/s

4 0

4 years ago

1. The speed of sound in air is roughly 1,484 m/s. How far, in meters, would a sound wave travel in 3 seconds?

kobusy [5.1K]

Speed = distance/time taken

1484 = distance/3

Distance = 1484 x 3

Distance = 4452 m

7 0

3 years ago

A wave travels at a constant speed. How does the frequency change if the wavelength is reduced by a factor of 4

sweet-ann [11.9K]

The product of (wavelength) x (frequency) is always the same number ... the wave's speed.

So if the wavelength is somehow reduced to 1/4 its original length, the <em>frequency is immediately multiplied by 4</em> . That's the only way their product can remain the same.

4 0

3 years ago

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