yasameenakbari
11.11.2020 •
Physics
A cheerleader lifts his 39.1 kg partner straight up off the ground a distance of 0.378 m before releasing her. Assume the partner’s velocity is zero at the beginning and the end of the lift. The acceleration of gravity is 9.8 m/s 2 . If he does this 18 times, how much work has he done? Answer in units of J.
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Ответ:
A
Explanation:
the image formed behind the mirrow= virtual
and the size of the image increase and upright