One of the harmonics of a column of air in a tube that is open at one end and closed at the other has a frequency of 448 Hz, and the next higher harmonic has a frequency of 576 Hz. What is the fundamental frequency of the air column in this tube?
A) 32 Hz
B) 64 Hz
C) 88 Hz
D) 128 Hz
E) 256 Hz
B
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An object is made up of three masses connected by massless rods of fixed length
Mass A is located at (30.0 cm, 0 cm) and has a mass of 250 grams, mass B is located at (0 cm, 30.0 cm) and has a mass of 350 grams, mass C is located at (-30.0 cm, 0 cm) and has a mass of 450 grams. What is the moment of inertia of this object about an axis perpendicular to the x-y plane and passing through the origin? A) 0.0945 kg m2 B) 0.315 kg m2 C) 0.185 kg m2 D) 0.0135 kg m2 E) 0.0450 kg m2
Answer the following statement(s) true (T) or false (F)
Consider an infinite solenoid with a rectangular cross section instead of a circular cross section. 1. The solenoid’s magnetic field must everywhere still point parallel to the solenoid’s central axis. 2. The solenoid’s magnetic field must still be zero everywhere outside the solenoid. 3. The solenoid’s magnetic field in the solenoid’s hollow interior must still have a uniform magnitude ? 0 (NI/L), where N is the number of turns in length L and I is the current carried by each turn
Say you are in the bottom of Happy Valley. How does the force ofgravity compare towhat it would be on top of Mount Nittany?
a) two times less in Happy Valley than on Mount Nittany b) two times greater in Happy Valley than on Mount Nittany c) slightly greater in Happy Valley than on Mount Nittany d) exactly equal in Happy Valley and on Mount Nittany e) slightly less in Happy Valley than on Mount Nittany
The flattened, rotating disk of gas and dust around the protosun, from which planets were believed to have formed, is called the
a. solar nebula. b. planetary nebula. c. condensation nebula. d. primordial nebula.