A wire is 12.00 m long and has a diameter of 1.50 mm. The tensile modulus of the wire is 
If a force of 500 N is applied to end of the wire, then the increase in length of the wire is
A. 38.5 mm.
B. 40.2 mm.
C. 44.1 mm.
D. 48.5 mm.
E. 51.50 mm.
D. 48.5 mm.
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A 10 kg solid cylinder (I = 1/2 
with a radius of 30.0 cm is rotating about a vertical axis through its center. If the angular momentum is increasing at the rate of 25.0 kg 
then what is the angular acceleration?
A. 75.3 
B. 65.9
C. 55.6
D. 40.5
E. 35.2
The reason the rings of Saturn exist is because
A) the ring material lies within the Roche limit of Saturn. B) the gravitational influence of Titan confines them to those orbits. C) the eruptions of Mimas' volcanoes are keeping them supplied with ice. D) there has not been sufficient time for the ring particles to form a moon. E) Saturn's rapid rotation is spinning material away from its equator, out into space.
A uniform rod has a weight of 40. N and a length of 1.0 m. It is hinged to a wall (at the left end), and held in a horizontal position by a vertical massless string (at the right end), as shown in Fig. 8-7
What is the magnitude of the torque exerted by the string about a horizontal axis which passes through the hinge and is perpendicular to the rod? A) 40 m ? N B) 10 m ? N C) 5.0 m ? N D) 20 m ? N E) 30 m ? N
A general condition that two waves undergo constructive interference is that
A. their phase difference is zero.
B. their phase difference is
C. their phase difference is
D. their phase difference is an even integral multiple of
E. their phase difference is an odd integral multiple of
