Answer:
The frequencies are the same.
Explanation:
This is similar to the photoelectric effect. The frequency of the electromagnetic wave has to match a threshold frequency before it can set electrons into oscillation in a receiving antenna. After the frequency of the electromagnetic waves have matched and exceeded this threshold frequency, all of it's energy is converted to the kinetic energy of the electrons it sets into oscillation. And since their energies are similar, the frequencies too, subsequently, will be the same.
Answer:
A longitudinal wave is a wave where the movement of the medium is in the same direction as the wave. On the other hand, a transverse wave is a wave where the movement of the medium is at a right angle to the wave direction.
Explanation:i got this right on a quiz so i know its right
The planet that is the farthest is Neptune, pls make me brainliest:)
Answer:
Part a)
![KE = 77.95 J](https://tex.z-dn.net/?f=KE%20%3D%2077.95%20J)
Part b)
![L = 3.16 m](https://tex.z-dn.net/?f=L%20%3D%203.16%20m)
Part c)
distance L is independent of the mass of the sphere
Explanation:
Part a)
As we know that rotational kinetic energy of the sphere is given as
![KE = \frac{1}{2}I\omega_2 + \frac{1}{2}mv^2](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B1%7D%7B2%7DI%5Comega_2%20%2B%20%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
so we will have
![KE = \frac{1}{2}(\frac{2}{5}mR^2)(\frac{v}{R})^2 + \frac{1}{2}mv^2](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B1%7D%7B2%7D%28%5Cfrac%7B2%7D%7B5%7DmR%5E2%29%28%5Cfrac%7Bv%7D%7BR%7D%29%5E2%20%2B%20%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
so we will have
![KE = \frac{1}{5} mv^2 + \frac{1}{2}mv^2](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B1%7D%7B5%7D%20mv%5E2%20%2B%20%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
![KE = \frac{7}{10} mv^2](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B7%7D%7B10%7D%20mv%5E2)
![KE = \frac{7}{10}(\frac{42}{9.81})(5.10^2)](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B7%7D%7B10%7D%28%5Cfrac%7B42%7D%7B9.81%7D%29%285.10%5E2%29)
![KE = 77.95 J](https://tex.z-dn.net/?f=KE%20%3D%2077.95%20J)
Part b)
By mechanical energy conservation law we know that
Work done against gravity = initial kinetic energy of the sphere
So we will have
![mgLsin\theta = KE](https://tex.z-dn.net/?f=mgLsin%5Ctheta%20%3D%20KE)
![\frac{42}{9.81}(9.81)L sin36 = 77.95](https://tex.z-dn.net/?f=%5Cfrac%7B42%7D%7B9.81%7D%289.81%29L%20sin36%20%3D%2077.95)
![L = 3.16 m](https://tex.z-dn.net/?f=L%20%3D%203.16%20m)
Part c)
by equation of energy conservation we know that
![\frac{7}{10}mv^2 = mgL sin\theta](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B10%7Dmv%5E2%20%3D%20mgL%20sin%5Ctheta)
so here we can see that distance L is independent of the mass of the sphere