The statement that "the number of field lines passing through a surface is proportional to the net charge enclosed" is known as
A) Franklin's Law.
B) The Law of Enclosure.
C) Coulomb's Law.
D) Gauss's Law.
E) Faraday's Law.
D
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In contrast to Ursa Major, the Big Dipper is not a(n) ___ but is instead a(n) ______
a. star; constellation. b. asterism; constellation. c. a constellation; asterism. d. Wrong! Both are asterisms. e. Wrong! Both are official constellations.
A beam of light emerges from water into air at an angle bent
A) towards the normal B) away from the normal. C) in a direction parallel to the normal. D) in a direction perpendicular to the normal. E) not at all.
Ethanol is to be condensed around cool 10ºC tubes of 1 cm outside diameter and at a 50 saturation temperature of 78.5ºC. Plot the heat transfer per unit length on horizontal tubes arranged as shown in Figure 10-17b and as predicted by Equation 10-49 as the number of tubes is increased. How does this result compare to the heat transfer predicted for a single tube or for a dripping, in-line tube arrangement as shown in Figure 10-17c? Ethanol has a heat of vaporization hnfg of 842 J/kg at atmospheric pressure.
The thermal motions of the atoms in a gas cloud can make it collapse to form a protostar
a. True b. False Indicate whether the statement is true or false