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Tasya [4]
3 years ago
8

When an athlete holds the barbell directly over his head, the force he exerts on the barbell is the same as the force exerted by

the barbell on him. How do these forces (the weight of the barbell, the force exerted by the man on the barbell, and the force exerted by the barbell on the man) vary for the case in which the barbell is accelerated upward?
Physics
1 answer:
frutty [35]3 years ago
5 0

Answer:

Explained

Explanation:

When the barbell is accelerated upward, the force exerted by the athlete is greater than the weight of the barbell. (The barbell, simultaneously, pushes with greater force against the athlete.) When acceleration is downward, the force supplied by the athlete is less than the force applied by the barbell on the athlete.

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The ratio of the maximum photoelectron kinetic energy to the work function will be 3:1.

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When a medium receives electromagnetic radiation, electrostatically charged particles are emitted from or inside it.

The emission of ions from a steel plate when light falls on it is a common definition of the effect. The substance could be a solid, liquid, or gas; and the released particles could be protons or electrons.

A particular metal emits photoelectrons when exposed to light with energy three times its work function:

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The ratio of the maximum photoelectron kinetic energy to the work function will be;

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If a soap bubble is 115 nm thick, what wavelength is most strongly reflected at the center of the outer surface when illuminated
sp2606 [1]

Answer:

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