A thin sheet of plastic (n = 1.60) is inserted between two panes of glass to reduce infrared (? = 700 nm) losses. What thickness (in nm) is necessary to produce constructive interference in the reflected infrared radiation?

a. 218
b. 109
c. 55
d. 318
e. 443


b

Physics & Space Science

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As the temperature difference between its reservoirs increases, the COP of a refrigerator

A. gets larger. B. gets smaller. C. does not change.

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As the velocity of your spaceship increases, you would observe

A) that your precision clock runs slower than normal. B) that the length of your spaceship has decreased. C) that your mass has increased. D) all of the given answers E) none of the given answers

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An object moving on a circular path at a

constant speed is said to be accelerating because a) the magnitude of the acceleration itself is changing. b) the magnitude of the velocity is changing. c) the direction of the velocity is changing. d) the magnitude is changing.

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A boat moves at 10.0 m/s relative to the water. If the boat is in a river where the current is 2.0 m/s, how long does it take the boat to make a complete round trip of 1.00 km upstream followed by a 1.00 km trip downstream?

What will be an ideal response?

Physics & Space Science