When a 0.350-kg package is attached to a vertical spring and lowered slowly, the spring stretches 12.0 cm. The package is now displaced from its equilibrium position and undergoes simple harmonic oscillations when released
What is the period of the oscillations?
A) 0.0769 s B) 0.286 s C) 0.695 s D) 1.44 s E) 0.483 s
C
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The magnetic field lines inside a bar magnet go in what direction?
A. from south pole to north pole B. from north pole to south pole C. from side to side D. There are no magnetic field lines inside a bar magnet.
The work done in the expansion from an initial to a final state
a. is the area under the curve of a PV diagram. b. depends only on the end point. c. is independent of the path. d. is the slope of a PV curve. e. equals P(VF ? Vi).
Calculate the angular diameter of the Moon with these known facts: Moon's linear diameter = 3480 km Moon's average distance from Earth = 384,000 km number of arc seconds in 1 radian = 2.06 x 10^5
a. 31 arc seconds b. 187 arc seconds c. 1750 arc seconds d. 1870 arc seconds e. 1910 arc seconds
A particle with a positive charge sits at rest near the south pole of a magnet as shown below. What is the direction of the magnetic force on the particle? Choose from the answers provided to the right and below the diagram.
A.A
B.B
C.C
D.D
E. Toward the viewer
F. Away from the viewer
T. There is no magnetic force on the particle.