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kicyunya [14]
2 years ago
5

Bud, a very large man of mass 130 kg, stands on a pogo stick. How much work is

Physics
1 answer:
Travka [436]2 years ago
6 0

Answer:

64 J

Explanation:

W = ΔPE

W = mgΔh

W = (130 kg) (9.8 m/s²) (0.050 m)

W = 64 J

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A proton and an electron are moving in the +x direction in a magnetic field in the +z
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Answer:

Explanation:

A proton and electron are moving in the positive x direction, this shows that their velocity will be in the positive x direction

V = v•i

Magnetic field Is the positive z direction

B = B•k

A. For proton.

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F = q(v×B)

F = q( v•i × B•k)

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Then, for the positive charge, the force will act in the negative direction of the y-axis

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Direction of force on proton

Force is given as

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F = -qvB (i×k)

From vectors i×k = -j

F = --qvB •j

F = qvB •j

Then, for the negative charge, the force will act in the positive direction of the y-axis

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3 years ago
A 75 kg astronaut floating in space throws a 5 kg rock at 5 m/sec. How fast does the astronaut move backwards?
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Answer:

The astronaut will get a velocity 0.064ms−1 opposite to the direction of the object.

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2 years ago
A car takes 15 minutes to travel along a road that is 20 km long.
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Answer:

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