Planet Z-34 has a mass equal to one-third that of Earth and a radius equal to one-third that of Earth. With g representing, as usual, the free-fall acceleration at the surface of Earth, the free-fall acceleration at the surface of Z-34 is
A) g/3.
B) 3g.
C) 6g.
D) g/9.
E) 9g.
B
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Pluto's composition is most similar to that of a
A) terrestrial planet. B) comet. C) star. D) jovian planet.
A stretched string is observed to vibrate in three equal segments when driven by a 480 Hz oscillator. What is the fundamental frequency of vibration for this string?
a. 480 Hz b. 320 Hz c. 160 Hz d. 640 Hz e. 240 Hz
In an LC circuit containing a 40-mH ideal inductor and a 1.2-mF capacitor, the maximum charge on the capacitor is 45 mC during the oscillations. What is the maximum current through the inductor during the oscillations?
A) 3.7 A B) 42 A C) 6.5 A D) 10 A E) 2.5 A
In a double slit experiment, the intensity of the light reaching the center of he screen from one slit alone is I0 and intensity of the light reaching the center from the other slit alone is 9I0. When both slits are open, what is the intensity of the light at the minima nearest the center?
A. 4/0 B. 0 C. 8/0 D. 2/0