The resistance of a wire increases 3.9% when the temperature of the wire is raised 100
C What is the temperature coefficient of resistivity of the wire material?
A. 3.9
B. 0.39
C. 0.039
D. 0.0039
E. 0.00039
E. 0.00039
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This chapter states a link between Newton's Universal Law of Gravity and
A) biological processes. B) chemical processes. C) geological processes. D) the U.S. Constitution. E) none of the above
According to our present theory of solar system formation, which of the following lists the major ingredients of the solar nebula in order from the most abundant to the least abundant?
A) hydrogen and helium gas; hydrogen compounds; rock; metal B) hydrogen compounds; hydrogen and helium gas; metal; rock C) hydrogen and helium gas; rock; metal; and hydrogen compounds D) hydrogen; water; methane; and helium
On a cold day, a heat pump absorbs heat from the outside air at 14°F (?10°C) and transfers it into a home at a temperature of 86°F (30°C). Determine the maximum COP of the heat pump
a. 0.2 b. 4.4 c. 0.5 d. 7.6 e. 6.7
You are given three radioactive samples (?, ?, and ?) and can only dispose of one. The other two you must keep, one in your hand, the other in your pocket. How would you minimize your exposure risk?
A) keep ? in hand, keep ? in pocket, and dispose of ? B) dispose of ?, keep ? in hand, and keep ? in pocket C) dispose of ?, keep ? in pocket and keep ? in hand D) keep ? in pocket, dispose of ?, and keep ? in hand E) keep ? in hand, dispose of ?, and keep ? in pocket