Answer:
It's used to indicate pressure
C. Forces have mass and take up space
Answer:
C
Explanation:
If a pulley system has an efficiency of 74.2%, then only that fraction of the work performed will be useful. 74.2%=0.742. 0.742*200 is about 148J. Hope this helps!
<span>A: It is not an exact representation of the atom, but is close enough to be very useful.
Hope this helps!</span>
