Compression and rarefaction are two phenomenon occurs in longitudunal wave!
when there is denser particle gathering in that wave , there we called it compression and the rarer part of particles is rarefaction !
Answer:
Part i)
h = 5.44 m
Part ii)
h = 3.16 m
Explanation:
Part i)
Since the ball is rolling so its total kinetic energy in this case will convert into gravitational potential energy
So we have
![\frac{1}{2}mv^2 + \frac{1}{2}I\omega^2 = mgh](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dmv%5E2%20%2B%20%5Cfrac%7B1%7D%7B2%7DI%5Comega%5E2%20%3D%20mgh)
here we know that for spherical shell and pure rolling conditions
![v = R \omega](https://tex.z-dn.net/?f=v%20%3D%20R%20%5Comega)
![I = \frac{2}{3}mR^2](https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7B2%7D%7B3%7DmR%5E2)
![\frac{1}{2}mv^2 + \frac{1}{2}(\frac{2}{3}mR^2)(\frac{v^2}{R^2}) = mgh](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dmv%5E2%20%2B%20%5Cfrac%7B1%7D%7B2%7D%28%5Cfrac%7B2%7D%7B3%7DmR%5E2%29%28%5Cfrac%7Bv%5E2%7D%7BR%5E2%7D%29%20%3D%20mgh)
![\frac{5}{6}mv^2 = mgh](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B6%7Dmv%5E2%20%3D%20mgh)
![h = \frac{5v^2}{6g}](https://tex.z-dn.net/?f=h%20%3D%20%5Cfrac%7B5v%5E2%7D%7B6g%7D)
![h = \frac{5(8^2)}{6(9.81)} = 5.44 m](https://tex.z-dn.net/?f=h%20%3D%20%5Cfrac%7B5%288%5E2%29%7D%7B6%289.81%29%7D%20%3D%205.44%20m)
Part b)
If ball is not rolling and just sliding over the hill then in that case
![\frac{1}{2}mv^2 = mgh](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dmv%5E2%20%3D%20mgh)
![h = \frac{v^2}{2g}](https://tex.z-dn.net/?f=h%20%3D%20%5Cfrac%7Bv%5E2%7D%7B2g%7D)
![h = \frac{8^2}{2(9.81)} = 3.16 m](https://tex.z-dn.net/?f=h%20%3D%20%5Cfrac%7B8%5E2%7D%7B2%289.81%29%7D%20%3D%203.16%20m)
Answer:
battery
Explanation:
A battery contains stored chemical energy and converts it to electrical energy. (cK.12)
If Earth was twice as far from the sun, the force of gravity attracting the Earth to the sun would be only one-quarter as strong. The correct answer will be C.
The antacid is basic so it neutralizes acidity or lowers it. Then if it goes into the esophagus, it's not as strong and it doesn't hurt, and it also calms your stomach because the acidity in your stomach is also lower. Antacids are therefore taken by many people, especially as they grow older and things like heartburn become more common.