A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while its pressure increases linearly with the volume (so that the process follows a straight-line path in a pV diagram) from 110 kPa to 225 kPa
How much work is done on the gas during this expansion? A) -5.2 kJ
B) -7.5 kJ
C) -7.8 kJ
D) -11 kJ
E) -12 kJ
B
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Projectile Motion: A ball rolls over the edge of a platform with only a horizontal velocity. The height of the platform is 1.6 m and the horizontal range of the ball from the base of the platform is 20 m. What is the horizontal velocity of the ball just before it touches the ground? Neglect air resistance.
A. 35 m/s B. 9.8 m/s C. 20 m/s D. 4.9 m/s E. 70 m/s
A major surprise from space exploration is that ________ exists at the poles of both Mercury and our Moon
Fill in the blank(s) with correct word
How did the Hipparcos mission revolutionize our knowledge of stellar properties?
What will be an ideal response?
Why do today's high tides arrive about an hour later than yesterday's tides?
A. The tidal bulges include dry land as well as water, and dry land responds to the tidal forces more slowly. B. The gravitational pull of the Sun on the tidal bulges slows their flow around Earth. C. Friction between the surface of Earth and the water slow the water's motion. D. The Moon rises and sets about an hour later every day, and the tides follow the Moon.