A student designs a clock using a mass and a spring. Each oscillation of the mass advances the clock by one second. When the student builds the clock, he discovers he erred and each oscillation takes two seconds
What change can he make to fix the clock? A)
double the amplitude of the oscillations
B)
quadruple the spring constant of the spring
C)
double the spring constant of the spring
D)
quadruple the mass
E)
double the mass
B
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An astronaut has landed on an asteroid and conducts an experiment to determine the acceleration of gravity on that asteroid. He uses a simple pendulum that has a period of oscillation of 2
00 s on Earth and finds that on the asteroid the period is 11.3 s. What is the acceleration of gravity on that asteroid? A) 1.74 m/s2 B) 0.0544 m/s2 C) 0.307 m/s2 D) 5.51 m/s2 E) 1.66 m/s2
What resistance must be connected in parallel with a 633-? resistor to produce an equivalent resistance of 205 ??
What will be an ideal response?
A quantum of radiation has an energy of 1.5 keV. What is its frequency? (h = 6.63 × 10^?34 J?s and 1 eV = 1.60 × 10^?19 J)
a. 3.6E+14 Hz b. 3.6E+17 Hz c. 2.3E+17 Hz d. 2.4E+18 Hz e. 1.4E+17 Hz
Saturation and condensation are more likely to occur on a
A) cold day. B) warm day. C) windy day. D) balmy day.