How does the escape speed from Mars compare with that of the Earth? [ MEarth=9.31? MMars ; REarth=1.88 ? RMars ]
A) 222.%
B) 22.5%
C) 44.9%
D) 66.2%
E) 20.2%
C
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In the situation described in problem N12T.6, what do you think will happen to the satellite’s speed as time passes?
A. It slowly decreases. B. It remains roughly the same. C. It slowly increases.
A 5.0-kg object is lifted 1.1 m from the floor to a table. What is the object's gravitational potential energy relative to the floor?
Monochromatic light (l = 500 nm) is incident on a soap bubble (n = 1.4) that is 500-nm thick. Calculate the change of phase of the light that penetrates the front surface, reflects from the second surface, and emerges through the first surface as an angle between 0° and 360°?
a. 280° b. 160° c. 220° d. 100° e. 290°
What does temperature measure?
A) the average mass of particles in a substance B) the average size of particles in a substance C) the average kinetic energy of particles in a substance D) the total number of particles in a substance E) the total potential energy of particles in a substance