The temperature of a gas can be increased by
a. compressing it
b. adding heat to it
c. doing work on it
d. all of the above
e. none of the above
D
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An isothermal process for an ideal gas is represented on a p-V diagram by:
A. a horizontal line B. a vertical line C. a portion of an ellipse D. a portion of a parabola E. a portion of a hyperbola
If a star 100 light-years away explodes, the time for the gravitational waves to reach Earth is 100 years as measured from
A) any uniformly moving reference frame. B) any accelerating reference frame. C) any reference frame, accelerated or not. D) the reference frame of the waves. E) Earth.
As the ball is going downwards, the velocity points __________ and the acceleration points __________
Fill in the blank(s) with correct word
Impulse: A golf ball of mass 0.050 kg is at rest on the tee. Just after being struck, it has a velocity of 102 m/s. If the club and ball were in contact for 0.81 ms, what is the average force exerted on the ball by the club?
A. 6.3 kN B. 7.1 kN C. 5.5 kN D. 4.9 kN