Sunburns are produced by

A) infrared light.
B) visible light.
C) ultraviolet light.
D) all of the above
E) none of the above


Answer: C

Physics & Space Science

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The process of combining signals from separate telescopes to improve resolution is called ____________________

Fill in the blank(s) with correct word

Physics & Space Science

The figure shows a cross section of three parallel wires each carrying a current of 24 A. The currents in wires B and C are out of the paper, while that in wire A is into the paper. If the distance R = 5.0 mm, what is the magnitude of the force on a 4.0-m length of wire A?

A. 15 mN B. 77 mN C. 59 mN D. 12 mN E. 32 mN

Physics & Space Science

White dwarfs are all about the same size

Indicate whether the statement is true or false

Physics & Space Science

Two cars collide head-on. At every moment during the collision, the magnitude of the force the first car exerts on the second is exactly equal to the magnitude of the force the second car exerts on the first. This is an example of

A) Newton's first law. B) Newton's second law. C) Newton's third law. D) Newton's law of gravitation.

Physics & Space Science