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Shtirlitz [24]
3 years ago
8

A 100kg couch is being pushed with 196N of force. As it slides along the ground it experiences a coefficient of friction of 0.1.

What is the net force in this situation?
A 300N
B 202N
C 398N
D 98N
Physics
1 answer:
QveST [7]3 years ago
4 0

Answer:98

Explanation:hope this helps!

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For a simple harmonic motion energy is given with:
E=\frac{1}{2}kA^2
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E_1=\frac{1}{2}k(1)^2=\frac{1}{2}k\\E_2=\frac{1}{2}k(2)^2=\frac{4}{2}k=2k\\
We can see that energy associated with the wave is 4 times smaller when we decrease its amplitude by half. So the answer should be C.


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Increase the slit width to 1050 nm. What happens to the width of the central bright fringe? (Always remember to wait a few secon
djyliett [7]

Answer:

b.

Explanation:

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x_c= 2D\lambda/a


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3 0
4 years ago
What is the kinetic energy of a 50-kg child running to catch the school bus at
Vinvika [58]

Answer:

Option C

100 J

Explanation:

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Answer:

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