By what factor does the maximum energy stored in a series RL circuit change if the resistance is doubled and the inductance is tripled in the circuit?
a. 0.67 b. 0.75
c. 0.50 d. 1.5
b
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An underdamped spring-mass system consists of a spring with a force constant of 2.00 N/m and a mass of 550 g. It is observed that the oscillations decrease in magnitude by 10.0% every 360 s. What is the value of the damping constant for the system?
A) 3.22 × 10-4 Ns/m B) 2.16 × 10-4 Ns/m C) 11.7 × 10-4 Ns/m D) 5.85 × 10-4 Ns/m E) 8.95 × 10-4 Ns/m
Zero degrees on the Celsius scale
corresponds to what reference point? a)the ice point b)the steam point c)absolute zero d)212 degrees Fahrenheit
The Voyager space probes used electricity provided by
a. fuel cells b. solar arrays c. radioisotope thermoelectric generators d. hydrazine e. none of the above
Why are elements heavier than iron less abundant than those that are lighter?
A) because the duration of a supernova is relatively short B) because they tend to be unstable, and easily undergo fission C) Spectral evidence suggests they are only rare here on Earth. D) This is one of the mysteries of cosmic formation that has yet to be answered.