A radar antenna is rotating and makes one revolution every 24 s, as measured on earth. However, instruments on a spaceship moving with respect to the earth at a speed v measure that the antenna makes one revolution every 44 s. What is the ratio v/c of the speed v to the speed c of light in a vacuum

0.838

Explanation:

The ratio v/c of the speed v to the speed c of light in a vacuum is shown below:

Given that

= time interval for one revolution

= time interval measured with speed v

based on the given information, the ratio v/c  of the speed v to the speed c of light in a vacuum is

Now squaring both the sides

Now remove the squaring root from both the sides and putting the values

= 0.838

answer: point c: b. 1/2 potential, 1/2 kinetic, point a: 3/4 of its potential energy, point d or b: 3/4 potential, 1/4 kinetic

explanation: i cant explain. it's difficult to explain.

photocells convert light energy to electricity