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ziro4ka [17]
3 years ago
8

One end of spring is attached to a wall. The other end is attached to a movable block. If you pull the block so as to stretch th

e spring, is the work done by the spring on the block during the motion positive, negative, or zero
Physics
1 answer:
IRINA_888 [86]3 years ago
6 0

Answer: Positive

Explanation:

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Answer:

84.6 J

Explanation:

The work done by the force is given by

W=Fd cos \theta

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d = 6.0 m is the displacement

\theta=20^{\circ} is the angle between the force's direction and the displacement

Substituting the numbers into the equation, we find

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A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following c
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3 years ago
Two bicyclists are accelerating forward in a straight line, and Biker 1 has less mass than Biker 2. If the net force on the bike
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If  Biker 1 has less mass than Biker 2 it the follows that biker 1 has a greater acceleration than Biker 2.​

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Now if Biker 1 has less mass than Biker 2 it the follows that biker 1 has a greater acceleration than Biker 2.​

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Answer: 2.04 s

Explanation:

Let the initial velocity be v, Angle of projectile be

Then the horizontal component = v cos θ = 16 m/s

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Thus, the football takes 2.04 s to rise to the highest point of its trajectory.

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