The efficiency of a heat engine is defined as the ratio of
A)
the heat input at the high temperature to the heat output at the low temperature.
B)
the heat output at the low temperature to the heat input at the high temperature.
C)
the work it does to the heat input at the high temperature.
D)
the work it does to the heat output at the low temperature.
E)
the work it does to the difference between the heat input from the heat output.
C
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Estimate the rotational energy (in eV) for a diatomic hydrogen molecule in the l = 2 quantum state
(The equilibrium separation for the H2 molecule is 0.074 nm.) (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s, h = 1.055 × 10-34 J ? s, mH ? mproton = 1.67 × 10-27 kg) A) 0.026 eV B) 0.046 eV C) 0.055 eV D) 0.032 eV E) 0.011 eV
We can describe a position on Earth's surface by stating its
A) altitude and azimuth. B) altitude and direction. C) latitude and direction. D) latitude and longitude. E) meridian and longitude.
The uncertainty principle states that a particle cannot be precisely localized
a. True b. False Indicate whether the statement is true or false
In vacuum, the components of an EM wave are 
and 
0. What is the amplitude of the magnetic field for this wave?
a. 
b. 
c. 
d. 
e. 