Differences in apparent magnitude correspond to ratios of ________.
A. luminosity
B. brightness
C. distance
D. temperature
E. mass
Answer: B
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A bimetallic strip is formed from two materials that have different heat capacities
a. True b. False Indicate whether the statement is true or false
The spring of the pressure gauge shown in the figure has a force constant of 900 N/m, and the piston has a radius of 1.5 cm
As the gauge is lowered into water, what change in depth causes the piston to move in by 0.88 cm? The density of water is 1 000 kg/m3.
a.
1.1 m
b.
0.054 m
c.
76 m
d.
0.017 m
When an unstable O nucleus undergoes beta decay, the nucleus formed is that of
a. Oxygen. b. Neon. c. Nitrogen. d. Carbon. e. Fluorine.
Electric voltage is defined as
a)charge transfer per unit time. b)work per unit charge. c)resistance per unit charge. d)work per unit time. ?