You can add heat without raising temperature to
A) ice.
B) boiling water.
C) both of these
D) neither of these
Answer: C
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You ride on an elevator that is moving with constant downward acceleration while standing on a bathroom scale. The reading on the scale is
A) equal to your true weight, mg. B) less than your true weight, mg. C) more than your true weight, mg. D) could be more or less than your true weight, mg, depending on the magnitude of the acceleration.
An object is released from rest when it is a height h above the surface of a planet of mass M and radius R. What is the speed of the object just before striking the surface of the planet? Neglect any air resistance. Let h = 4.0 × 10^6 m, R = 5.0 × 10^6 m, and M = 4.0 × 10^24 kg
a. 7.8 km/s b. 3.5 km/s c. 5.4 km/s d. 6.9 km/s e. 4.8 km/s
A cube of copper 0.10 meters on each side has an average grain size of 10 × 10-6 m. The average grain boundary energy of copper is 625 × 10-3 J/m2 . Assume that all of the grains are cubes 10 × 10-6 m across.
Explain the difference between cosmic rays and electromagnetic radiation, and how cosmic particles are captured
What will be an ideal response?