If you wanted to know how much the temperature of a particular piece of material would rise when a known amount of heat was added to it, which of the following quantities would be most helpful to know?
A) initial temperature
B) specific heat
C) density
D) coefficient of linear expansion
E) thermal conductivity
B
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The ability of a telescope to show two very close objects separately is called its ________.
A. focal length B. light-gathering power C. resolving power D. magnification
Lunar eclipses can occur only during a ________
A) third quarter moon B) first quarter moon C) new moon D) full moon
Dmitri places one end of a copper rod in a heat reservoir and the other end in a heat sink. By what factor is the rate of heat flow changed when the temperature difference between the reservoir and sink is tripled?
a. 0.33 b. 1/9 c. 3.0 d. 9.0
How many time constants must elapse if an initially charged capacitor is to discharge 55% of its stored energy through a resistor?
a. 0.60 b. 0.46 c. 0.52 d. 0.40 e. 1.1