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Author Question: A 25-kg television set rests on four rubber pads that are on the floor, each one having a height of ... (Read 27 times)

HCHenry

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on: Jul 29, 2018
A 25-kg television set rests on four rubber pads that are on the floor, each one having a height of 1.0 cm and a radius of 0.60 cm. A horizontal force is applied to the television set.
 
  When the pads are just at the point of sliding over the floor, how far has the television set moved sideways due to the deformation of the pads? The coefficient of static friction between the rubber and the floor is 1.0 and the shear modulus of these rubber pads is 2.6  106 Pa.
  A) 4.2 mm B) 16 mm C) 2.1 mm D) 8.4 mm E) 1.1 mm

Question 2

If we photograph a person's face using dim light and an extremely short exposure time, the film will reveal
 
  A) a spread out but very fuzzy image of the face.
  B) a very dim image of the face.
  C) only a few separated tiny spots that don't much resemble the face.
  D) only a few separated interference lines.
  E) only a single tiny spot right at the center.


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covalentbond

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

C


HCHenry

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Reply 2 on: Jul 29, 2018
Gracias!

covalentbond

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Reply 3 on: Yesterday
:D TYSM

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