A 2,000 kg car traveling at 30.0 mi/h skids to a stop in 60.0 meters. The force of friction during the skid is (1.0 mi/h = 0.447 m/s)

A. 4,500 N.
B. 4,200 N.
C. 3,750 N.
D. 3,000 N.
E. 2,400 N.


D. 3,000 N.

Physics & Space Science

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The maximum torque on a flat current-carrying loop occurs when the angle between the plane of the loop's area and the magnetic field vector is

A) 0°. B) 45°. C) 90°. D) 135°.

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When light goes from a material with a lower index of refraction n1 into a material with a higher index of refraction n2 with an angle of incidence of which of the following is true?

A. the angle of refraction is more than

B. the angle of refraction is less than

C. total internal reflection may occur
D. the angle of refraction is more than
and total internal reflection may occur
E. the angle of refraction is less than
and total internal reflection may occur

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A silver conductor



Physics & Space Science

The work required to stretch a spring changes linearly with the amount of stretch

Indicate whether the statement is true or false

Physics & Space Science