Solar energy is one of the renewable energy sources that is invested around the world because of its large potential. the sun as a free source can sometimes bring a drawback. one of the drawbacks is that it cannot be harnessed when storms or rains are present in the weather. it is also expensive and young.
Answer:
The feeling of weight is one of compression.
Explanation:
All your body is being pulled down by gravity yet your feet ( if standing) or your back or something is holding you up.
Your body is compressed by the PAIR of forces and it is that compression that you feel.
So when you remove the supporting force then all the body is free to move together and there is no compression within you.
Hence you perceive no weight.
Density, streak, and geochemical signature through use of inductively coupled plasma mass spectrometry or Fourier transform infrared spectroscopy
T is the time for a whole round.
centripetal acceleration = V^2/R,
20 = 40^2 / R, find R = 40^2/20 = 40*40/20 = 80 m, right?
Now, one round is L = 2*pi*R = 2*pi*80 = 160*pi
And T = L/v (distance/speed) = 160*pi/40 = 4*pi seconds, or ~ 12.57 s
