If the temperature of an ideal gas contained in a box is increased:
a. the average velocity of the molecules in the box will be increased. b. the average speed of the molecules in the box will be increased. c. the distance between molecules in the box will be increased. d. all of the above.
B
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Poor weather is generally associated with
a) a high-pressure region b) a cyclone. c) the Coriolis force. d) a stationary front.
What is aerobraking?
A) the technique of using a planetary atmosphere to change the orbit of a spacecraft B) the use of a planetary atmosphere to redirect a spacecraft to another planet C) the controlled landing of a spacecraft on a planetary surface D) the gradual decrease of speed as a spacecraft leaves the solar system E) the destruction of a spacecraft by the intense pressure as it descends into the atmosphere
Elastic Collisions: A 320-g air track cart traveling at 1.25 m/s suddenly collides elastically with a stationary 270-g cart. What is the speed of the 270-g cart just after the collision?
A. 0.678 m/s B. 0.106 m/s C. 1.36 m/s D. 1.14 m/s E. 2.72 m/s
The __________ moon is visible above the eastern horizon a couple of hours before sunrise
a. waning gibbous b. waxing gibbous c. waxing crescent d. waning crescent e. new moon