A 4.00 kg object is moving at 5.00 m/s NORTH. It strikes a 6.00 kg object that is moving WEST at 2.00 m/s. The objects have a completely inelastic (stick together) collision. The kinetic energy lost in the collision is
A. 34.8 J.
B. 28.7 J.
C. 20.4 J.
D. 18.7 J.
E. 14.9 J.
A. 34.8 J.
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Two hoops or rings (I = MR2) are centered, lying on a turntable. The smaller ring has radius = 0.050 m; the larger has radius = 0.10 m. Both have a mass of 6.0 kg. What is the total moment of inertia as the turntable spins? Ignore the mass of the turntable
a. 0.030 kg•m2 c. 0.038 kg•m2 b. 0.0075 kg•m2 d. 0.075 kg•m2
Suppose you are facing a tall makeup mirror on a vertical wall. Fluorescent tubes framing the mirror carry a clockwise electric current. What is the direction of the magnetic field created by that current at the center of the mirror?
1.left 2.right 3.horizontally toward you 4.horizontally away from you 5.no direction because the field has zero magnitude
The lower the frequency of a sound wave, the
A) lower its velocity. B) greater its wavelength. C) smaller its amplitude. D) shorter its period. E) greater its velocity.
A(n) ______________ moon occurs when more than one-half of the Moon's surface appears illuminated
Fill in the blank(s) with correct word