Answer:
kinetic energy at that point is 3500 MJ
Explanation:
Given data
potential energy = 5000 MJ
kinetic energy = 4500 MJ
satellite’s potential energy is 6000 MJ
to find out
kinetic energy
solution
we know that total energy is sum of kinetic energy and potential energy
so kinetic energy will be
kinetic energy = total energy - potential energy ................1
here
total energy = 5000 + 4500 = 9500 MJ
so now put all value in equation 1
kinetic energy = total energy - potential energy
kinetic energy = 9500 - 6000 = 3500
so kinetic energy at that point is 3500 MJ
Potential energy due to gravity = Ep = mgh [symbols have their usual meaning ]
Evidently, HALVING the mass will make Ep , HALF its previous value. So, It will be halved.
You didn't give us anything other than the question. No options are provided so I cannot answer. Nobody can.
Answer:
3.3 mm
Explanation:
The electric shaver is vibrating back and forward covering a distance of 2 mm, therefore, the amplitude of this vibration is always the half of the distance.
So the expression to use is:
A = D/2
A = 6.6 / 2 = 3.3 mm
Now, suppose you want the speed of this vibration:
V = 2πfA
V = 2π * 235 * 0.0033
V = 4.87 m/s