An electrical motor spins at a constant If the rotor radius is what is the linear acceleration of the edge of the rotor?

A) 572,400 m/s2 B) 5707 m/s2 C) 281.6 m/s2 D) 28.20 m/s2


B

Physics & Space Science

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The kinetic energy of a body is correctly given by which of the following expressions? (m=mass, v=speed)

A. mv2 B. mv C. (½)mv D. 2mv2 E. (½)mv2

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The image of an object placed in front

of a concave mirror is always upright.

1.True 2.False

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Force on a Moving Charge: A charged particle that is moving in a static uniform magnetic field

A. will always experience a magnetic force, regardless of its direction of motion. B. may experience a magnetic force which will cause its speed to change. C. may experience a magnetic force, but its speed will not change. D. may experience a magnetic force, but its direction of motion will not change. E. None of these statements are true.

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A convex mirror always produces a virtual image smaller than the object

Indicate whether the statement is true or false

Physics & Space Science