A light ray in air is incident on an air-to-glass boundary at an angle of 30.0° and is refracted in the glass at an angle of 16.7° with the normal. Find the index of refraction of the glass
a. 1.74
c. 1.23
b. 1.40
d. 2.13
A
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When a lump of uranium is broken into smaller pieces, the total surface area
A) decreases. B) remains the same. C) increases.
A proton is released from rest in a uniform electric field. Which statement is correct?
a. The proton will move in the same direction as the electric field to regions of higher electric potential. b. The proton will move in the same direction as the electric field to regions of lower electric potential. c. The proton will move in the opposite direction as the electric field to regions of higher electric potential. d. The proton will move in the opposite direction as the electric field to regions of lower electric potential.
Amir drives his ATV from coordinates (5.0 km, 25°) directly to (25.0 km, 45°) in 45 minutes. What is the ATV's speed?
a. 0.5 km/h b. 20.4 km/h c. 27.2 km/h d. 34.0 km/h
What is the zeroth law of thermodynamics?
a. Energy is always conserved in thermodynamic processes. b. Momentum is always conserved. c. The pressure of a fluid decreases as its velocity increases. d. If two objects are in thermal equilibrium with a third object, they are in thermal equilibrium with each other. e. If a = c and b = c, then a = b.