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DerKrebs [107]
3 years ago
14

Which of the following terms describes a process for which Q = -73 J?

Physics
1 answer:
Bess [88]3 years ago
4 0
It is an Exothermic reaction
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You find it takes 200 N of horizontal force tomove an unloaded pickup truck along a level road at a speed of2.4 m/s. You then lo
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F(h)= 230 N is the horizontal force you will need to move the pickup along the same road at the same speed.

STEP-BY-STEP EXPLANATION:

F(h) is Horizontal Force = 200 N

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The total weight increase by 42%

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Since the velocity is constant so acceleration is zero; a=0

Now the horizontal force required to move the pickup is equal to the frictional force.

F(h) = F(f)

F(h) = mg* u

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New weight = 1+0.42 = 1.42 = (1.42*m*g)

New friction coefficient = μ = 1 - 0.19 = 0.81 = 0.81 u

F(h) = (0.81μ) (1.42 m g)

       = (0.81) (1.42) (μ m g)

       = (0.81) (1.42) (200)

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A woman flies 300 kilometers north, 200 kilometers west, and 500 kilometers south. How far is she from her starting point?
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