A thin sheet of plastic (n = 1.60) is inserted between two panes of glass to reduce infrared (l = 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
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A 2000 kg car is traveling at 20.0 m/s down a long mountain grade of 1.00%. The mountain road is 3.00 km long. The heat generated at the brakes due to friction heats up the brakes. The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg 
What is the increase in the temperature of the brakes?
A. 22.3 
B. 35.1
C. 40.2
D. 45.2
E. 53.6
Two vertical tubes of equal cross-sectional areas are filled with liquids to heights producing atmospheric pressure at their bottoms. One liquid is water and the other is mercury. Both liquids have equal
A) volumes. B) densities. C) weights. D) viscosity. E) none of the above
An object is thrown vertically upward such that it has a speed of 25 m/s when it reaches two thirds of its maximum height above the launch point. Determine this maximum height
a. 64 m b. 48 m c. 32 m d. 96 m e. 75 m
The process of removing an electron from a stable nucleus is known as
a. ionization. b. Doppler broadening. c. collisional broadening. d. a red shift. e. quantum mechanics.