Two identical strings have the same length and same mass per unit length. String B is stretched with four times as great a tension as that applied to string A. Which statement is correct for all n harmonics on the two strings, n = 1, 2, 3...?
A.
B.
C.
D.
E.
Answer: D
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Carnot Engine: An ideal Carnot engine operates between a warm reservoir at 233 K and a colder reservoir. During each cycle, this engine extracts 15.0 J of heat from the warm reservoir and does 4.0 J of work. What is the temperature of the colder reservoir?
A. 171 K B. 62 K C. 47 K D. 67 K
In neutronization of the core, a proton and an electron make a neutron and a(n):
A) positron. B) muon. C) neutrino. D) pion. E) antineutron.
A satellite is in orbit around the earth. Which one feels the greater force?
A) It depends on the distance of the satellite from Earth. B) the satellite because the earth is so much more massive C) Earth and the satellite feel exactly the same force. D) the earth because the satellite has so little mass
An RL series circuit has the following components: 9.2-mH coil, 1.2-? resistor, 16-V battery, ammeter and switch. What is the time constant of this circuit?
a. 1.3E+2 s b. 7.7E–3 s c. 1.4E–3 s d. 6.9E–4 s e. 1.2E–1 s