How many forces act on an upwardly tossed coin when it gets to the top of its path?
A) one; the force due to gravity
B) two; gravity and the force in the coin itself
C) three; gravity, the coin's internal force, and a turnaround force
D) none of the above
Answer: A
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A long linear charge distribution of charge density 1.35 nC/m is surrounded by a concentric cylindrical surface of length 1.60 m and radius 23.6 cm. What is the electric flux through the surface of the cylinder?
A. 0.00
B. 160 
C. 244
D. 280
E. 316
Which type of heavy atomic nuclei are most common, and why?
A) Transuranium elements, for only very heavy elements are made in supernovae. B) Odd numbered elements, because hydrogen is the building block for all heavier elements. C) Even numbered elements, for helium is "giant food" for everything beyond itself. D) Metals, for iron is the last abundant element formed before the type II supernova. E) Noble gases, for they are the most stable elements.
An organ pipe closed at one end has a length of 60 centimeters. What is the wavelength of the second harmonic?
A. 20 cm B. 60 cm C. 80 cm D. 100 cm
A total impedance of an RC circuit with a capacitance of 40.0 ?F is 800 ?. If the frequency of the applied ac voltage is 18.0 Hz, what is the resistance of the circuit?
A) 569 ? B) 669 ? C) 769 ? D) 869 ? E) 800 ?