Suppose the Moon had twice the diameter but the same mass and same orbital distance from Earth. In that case, the high tides on Earth would be
A) higher.
B) lower.
C) unequal in size.
D) practically the same.
E) none of the above
Answer: D
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Work-Energy Theorem: A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it travels 11 m. What is the coefficient of kinetic friction between the stone and the surface?
A. 0.13 B. 0.25 C. 0.30 D. 0.43 E. 0.80
A particle (q = ?4.0 ?C, m = 5.0 mg) moves in a uniform magnetic field with a velocity having a magnitude of 2.0 km/s and a direction that is 50° away from that of the magnetic field. The particle is observed to have an acceleration with a magnitude of 5.8 m/s2. What is the magnitude of the magnetic field?
A. 5.3 mT B. 4.9 mT C. 5.1 mT D. 4.7 mT E. 3.6 mT
To get the space velocity of a star in three dimensions, you need its proper motion, distance, and radial velocity
Indicate whether the statement is true or false
A bimetallic strip is formed from two materials that have different
a. coefficients of linear expansion. b. heat capacities. c. calories. d. phase transitions. e. relative humidities.