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Sonbull [250]
3 years ago
7

An object is thrown vertically upward such that it has a speed of 25 m/s when it reaches two thirds of its maximum height above

the launch point. Determine this maximum height.
A) 96m
B) 32m
C) 48 m
D) 75m
E) 64 m
Physics
1 answer:
AlekseyPX3 years ago
4 0

Answer:

v0 = 25 m/s

vf = 0 m/s

a = -9.80 m/s^2

change in x = 31.89m

but that's only 1/3 of the hight, so i time it by 3 to get 96m

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A 2.13-kg object on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 5.00 N
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Answer:

17.54N in -x direction.

Explanation:

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ω = 1.53 rad/s

The force acting on the object F(t) = ?

F(t) = -mAω²cos(ωt)

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When light is directed on a metal surface, the kinetic energies of the photoelectrons a) are random b) vary with the frequency o
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Answer:

b) vary with the frequency of the light

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Therefore, When light is directed on a metal surface, the kinetic energies of the photoelectrons vary with the frequency of the light

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