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Aleksandr [31]
3 years ago
15

A spring with k = 500 N/m stores 704 J. How far is it extended from the equilibrium position

Physics
1 answer:
kaheart [24]3 years ago
4 0

Given that:

k = 500 n/m,

work (W) = 704 J

spring extension (x) = ?

         we know that,

                      Work = (1/2) k x²

                          704 = (1/2) × 500 × x²

                            x = 1.67 m

A spring stretched for 1.67 m distance.

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An RV is traveling 60 km/h along a highway. A boy sitting near the driver of the RV throws a ball to another boy at the back end
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Answer:

Speed of the ball relative to the boys: 25 km/h

Speed of the ball relative to a stationary observer: 35 km/h

Explanation:

The RV is travelling at a velocity of

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The boy sitting near the driver throws the ball back with speed of 25 km/h, so the velocity of the ball in the reference frame of the RV is

v_B = -25 km/h

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Instead, a stationary observer outside the RV measures a velocity of the ball given by the algebraic sum of the two velocities:

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5 0
3 years ago
In the 2016 Olympics in Rio, after the 50 mm freestyle competition, a problem with the pool was found. In lane 1 there was a gen
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Answer:

Explanation:

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In lane 1 the effective speed would be 201.2 cm/s

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The change is 25.00 - 24.85 = 0.15 s decrease in time

In lane 8, the effective speed would be 198.8 cm/s

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4 years ago
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Answer:

K = 588.3 N/m

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By conservation of energy:

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