A book rests on a level table top. Which force does Newton's third law imply is equal in magnitude but opposite in direction to the weight of the book?
A)
the force of the table on the earth
B)
the force of the earth on the table
C)
the force of the book on the earth
D)
the force of the table on the book
E)
the force of the book on the table
C
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In the context of the history of the Moon, the slow surface evolution of the Moon was limited because:
A) the Moon lacks air and water. B) the Moon has a very high escape velocity. C) of the heat released from infalling matter. D) of the late heavy bombardment.
A particle (q = 5.0 nC, m = 3.0 ?g) moves in a region where the magnetic field has components Bx = 2.0 mT, By = 3.0 mT, and Bz = ?4.0 mT. At an instant when the speed of the particle is 5.0 km/s and the direction of its velocity is 120° relative to the magnetic field, what is the magnitude of the acceleration of the particle?
A. 33 m/s2 B. 17 m/s2 C. 39 m/s2 D. 25 m/s2 E. 45 m/s2
An Atwood machine consists of a mass of 3.5 kg connected by a light string to a mass of 6.0 kg over a frictionless pulley with a moment of inertia of 0.0352 kg ? m2 and a radius of 12.5 cm
If the system is released from rest, what is the speed of the masses after they have moved through 1.25 m if the string does not slip on the pulley? A) 2.0 m/s B) 2.3 m/s C) 4.0 m/s D) 5.0 m/s E) 6.0 m/s
According to the definition of “science” given in this chapter, which of the following do you think are sciences? Choose the letter of the first discipline on the list that you think is not a science. (The answer is open to debate!)
A. Geology B. Psychology C. Economics D. Anthropology E. Political Science F. Philosophy T. All are sciences