A 30 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0
is 331 m/s. What is the wavelength of the fundamental mode?
A. 1.4 m
B. 1.6 m
C. 1.8 m
D. 1.0 m
E. 1.2 m
E. 1.2 m
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According to Kepler's third law (p2 = a3), how does a planet's mass affect its orbit around the Sun?
A) More massive planets orbit the Sun at higher average speed. B) A planet's mass has no effect on its orbit around the Sun. C) More massive planets must have more circular orbits. D) A more massive planet must have a larger semimajor axis.
You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. When you increase the plate separation, what happens to the value of ?V?
1.It increases. 2.It decreases. 3.It stays the same.
How many zodiacal constellations are there?
A. 24 B. 88 C. 13 D. 12
Solar energy is quite compatible for a major part of the U.S. because our major energy needs are for ________ energy
a. electrical b. thermal c. kinetic d. potential e. mechanical