If two adjacent frequencies of an organ pipe closed at one end are 500 Hz and 700 Hz, what is the length of the organ pipe? (vsound = 340 m/s)
a. 0.85 m
c. 1.50 m
b. 1.25 m
d. 1.70 m
A
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Mass on a Spring: An object of mass m = 8.0 kg is attached to an ideal spring and allowed to hang in the earth's gravitational field. The spring stretches 2.2 cm before it reaches its equilibrium position. If it were now allowed to oscillate by this spring, what would be its frequency?
A. 3.4 Hz B. 0.28 × 10-3 Hz C. 0.52 Hz D. 1.6 Hz
According to the laws of thermal radiation, hotter objects emit photons with
A) a shorter average wavelength. B) a lower average frequency. C) a lower average energy. D) a higher average speed.
How much heat is required to melt 5.0 kg of ice at 0°C to water at 0°C?
A 120-V rms voltage at 1000 Hz is applied to a series RLC circuit with an equal value of inductive and capacitive reactance and a 200-? resistance. What is the impedance of this circuit?
A) 240 ? B) 120 ? C) 100 ? D) 0 ? E) 200 ?