Answer:

Explanation:
As we know that average power is the ratio of total work done and total time interval
so we will have

now we know that


so we will have


now power is given as


The correct answer is C. Universal Gravitation (it was written by Issac Newton)
Answer:
70.07 Hz
Explanation:
Since the sound is moving away from the observer then
and
when moving towards observer
With
of 76 then taking speed in air as 343 m/s we have


Similarly, with
of 65 we have

Now

v_s=27.76 m/s
Substituting the above into any of the first two equations then we obtain

Answer:
rocks and other materials inside the Earth. 5.
Explanation: