Lenz's Law: Two solenoids are close to each other, as shown in the figure, with the switch S open. When the switch is suddenly closed, which way will the induced current flow through the galvanometer in the left-hand solenoid?
A. from left to right
B. from right to left
C. There will be no induced current through the galvanometer.
Answer: B
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The length of a certain wire is halved while the radius is doubled. What is the change in the resistance of this wire?
A) It stays the same. B) It is reduced by a factor of 2. C) It is reduced by a factor of 4. D) It is reduced by a factor of 8. E) It is quadrupled.
An aluminum ball is subjected to a pressure of 
The bulk strain is 
What is the bulk modulus?
a. 
b. 
c. 
d. 
e. 
High mass stars are much less common than low mass stars because they
A) are born in much smaller numbers B) have much shorter lifetimes C) have much longer lifetimes D) two of these
It is impossible for a star to have a negative apparent magnitude, such as -1
Indicate whether the statement is true or false