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
Energy is the capacity to do some type of work
<span>1 cal = 4,185 J
1 kcal = 1*10^3 cal
or
=1000 cal</span>
It could be A :) not sure tho
Answer:
when an x-ray passes trough matter, it undergoes a process called attenuation