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Ivahew [28]
2 years ago
12

2. A science book is being pushed across a table. Can the book have a constant speed and a

Physics
1 answer:
tangare [24]2 years ago
4 0
Yes, it can have both cuz of the book is pushed straight it has a constant speed moving forward and if the book curves then it is changing velocity
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A baseball pitcher loosens up his pitching arm. He tosses a 0.20-kg ball using only the rotation of his forearm, 0.28 m in lengt
aev [14]

Answer:

Moment of Inertia, I = 0.016 kgm²

Explanation:

Mass of the ball, m = 0.20 kg

Length of the pitcher's arm, l = 0.28

Radius of the circular arc, r = 0.28 m

Moment of Inertia is given by the formula:

I = mr²

I = 0.20 * 0.28²

I = 0.20 * 0.0784

I = 0.01568

I = 0.016 kgm²

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3 years ago
8. At what position does the mass have the greatest acceleration?
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Answer:

Option (e)

Explanation:

If a mass attached to a spring is stretched and released, it follows a simple harmonic motion.

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At position +A, mass will have the minimum kinetic energy, zero velocity and maximum acceleration.

Therefore, Option (e) will be the answer.

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Explanation:

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Convert 5.5 kilometers into millimeters.​
dimaraw [331]

Answer:

5500000 millimeters

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1 metre = 1000 millimetres

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