What is the resistance of a gas to the flow of radiation?
Answer: Opacity
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In the relationship ?P ? ?T , what scale is used for temperature?
a. Fahrenheit b. Celsius c. Kelvin d. Both Celsius and Kelvin may be used since the degree size is the same for both.
The terrestrial planets, ranked in order of decreasing atmospheric density, are
a. Venus, Earth, Mars, Mercury b. Venus, Mars, Earth, Mercury c. Mercury, Mars, Earth, Venus d. Mars, Venus, Mercury, Earth
A car weighing 5000 N is traveling along a straight level road powered by a forward drive force of 500 N. The force of air resistance is 200 N, and rolling resistance is 100 N. The net force on the car is
A) 200 N forward. B) zero. C) 300 N backward. D) 5000 N downward. E) 500 N forward.
A filament running along the x axis from the origin to x = 80.0 cm carries electric charge with uniform density. At the point P with coordinates (x = 80.0 cm, y = 80.0 cm), this filament creates electric potential 100 V. Now we add another filament along the y axis, running from the origin to y = 80.0 cm, carrying the same amount of charge with the same uniform density. At the same point P, the
pair of filaments creates potential: 1.greater than 200 V. 2.200 V. 3.100 V. 4.between 0 and 200 V. 5.0.