Answer:
Measurements are an important part of comparing things, as they provide the basis on comparing objects to other objects. Measurements allow us to recognize three hours and see how it's shorter than five hours, without having to observe the hours passing by themselves.
It’s 4 because a coiled springs is closely spaced then widen
The answer is D. time really does pass more slowly in a rest frame of reference relative to a frame of reference that is moving
Electric field between the plates of parallel plate capacitor is given as

here area of plates of capacitor is given as


also the maximum field strength is given as

now we will plug in all data to find the maximum possible charge on capacitor plates


so the maximum charge that plate will hold will be given by above

for a solid cylinder:

for a hollow cylinder:

I will look at the case of a hollow cylinder:

That is as far as i get.