A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a maximum?
A)
at either A or B
B)
midway between A and B
C)
one-third of the way between A and B
D)
one-fourth of the way between A and B
E)
none of the above
B
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Resistor A has twice the resistance of resistor B. When individually connected across a given potential difference, which one dissipates the most power; and when connected in series across the same potential difference, which one dissipates the most power?
a. A, A c. A, B b. B, B d. B, A
Capacitors in Combination: A 2.0-?F capacitor and a 4.0-?F capacitor are connected in series across an 8.0-V potential source. What is the charge on the 2.0-?F capacitor?
A. 2.0 ?C B. 4.0 ?C C. 12 ?C D. 11 ?C E. 25 ?C
Spherical Mirrors: Reza's face is 20 cm in front of a concave shaving mirror having a focal length of magnitude 30 cm. How large is the image of his face?
A. half as large as his face B. of the same size as his face C. twice as large as his face D. three times as large as his face E. four times as large as his face
In a laser the emitted light is __________
Fill in the blank(s) with correct word