Atetherball is attached to a pole with a 2.0-m rope. it is circling at 0.20 rev/s. as the rope wraps around the pole it shortens. how long is the rope when the ball is moving at 5.0 m/s?

The length of the rope  is 1.005 m.

Explanation:

Given that,

Length of rope = 2.0 m

Angular speed = 0.20 rev/s

Linear speed = 5.0 m/s

Since there are no external torques about the rotation  axis

We need to calculate the length of the rope

Using conservation of angular momentum

Put the value into the formula

Hence, The length of the rope  is 1.005 m.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

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