Consider an LRC series circuit. The impedance of the circuit increases if XC increases. When is this statement true?
A)
always true
B)
true only if XL is less than or equal to XC
C)
true only if XL is greater than XC
D)
true only if XL is equal to XC
E)
never true
B
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a. 1111 b. 111 c. 11 d. 1 e. 11111
If a material is highly opaque, then it
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The number of degrees of freedom of a triatomic molecule is:
A. 1 B. 3 C. 6 D. 8 E. 9
Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.The work you do is
a. 0 b. 4 J. c. 100 J. d. none of the above.