Suppose a solid sphere of mass M and radius R rolls without slipping down an inclined plane starting from rest. The linear velocity of the sphere at the bottom of the incline depends on
A)
the mass of the sphere.
B)
the radius of the sphere.
C)
both the mass and the radius of the sphere.
D)
neither the mass nor the radius of the sphere.
D
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Center of Mass: Three small masses are positioned at the following coordinates: 3.0 kg at (3.0 m, 2.0 m); 4.0 kg at (0.0 m, -1.0 m); and 5.0 kg at (5.0 m, -7.0 m). What are the coordinates of the center of mass (or center of gravity) of this system?
Fill in the blank(s) with the appropriate word(s).
Ultrasound is used
a. to form images of internal organs. b. by bats to navigate. c. in automatic focus cameras. d. to control insects. e. all of the above
If the primary coil of a transformer contains more loops than the secondary coil then it is a
A) step-up transformer. B) step-down transformer.
A 120-mH inductor is in series with a 20-? resistor and a variable capacitor that can range from 0.110 ?F to 0.400 ?F
(a) What is the range of possible resonance frequencies? (b) If the power supply is a 24-V rms source, what rms current flows at resonance?