At what Fahrenheit temperature are the Kelvin and Fahrenheit temperatures numerically equal?
What will be an ideal response?
574.6°F = 574.6 K
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When work is done by a system and heat is subtracted, the temperature of the system
A) increases. B) decreases. C) remains unchanged.
A 1000-kg car is traveling at 20.0 m/s toward the north. During a collision the car receives an impulse of 1.00 × 104 N?s toward the south. What is the velocity of the car after the impulse is applied to the car?
A) 0.00 m/s B) 20.0 m/s north C) 30.0 m/s north D) -10.0 m/s south E) 10.0 m/s north
Angular Momentum: A figure skater rotating at 5.00 rad/s with arms extended has a moment of inertia of 2.25 kg ? m2. If he pulls in his arms so his moment of inertia decreases to 1.80 kg ? m2, what will be his new angular speed?
A. 2.25 rad/s B. 4.60 rad/s C. 6.25 rad/s D. 0.81 rad/s
Which of the following best describes Pluto in terms of the general characteristics of terrestrial and jovian planets?
A) size and density similar to terrestrial planets; distance and composition similar to jovian planets B) size and solid surface similar to terrestrial planets; distance similar to jovian planets C) size and distance similar to terrestrial planets; gaseous surface and composition similar to jovian planets D) solid surface and density similar to terrestrial planets; temperature and composition similar to jovian planets E) solid surface and temperature similar to terrestrial planets; distance and density similar to jovian planets