A neutron has a mass of 1.67 × 10^-27 kg. Its de Broglie wavelength is 1.4 × 10^-10 m. What temperature would it correspond to if we had a monatomic gas having the same average kinetic energy (in °C)?
a. 273
b. 25
c. 36
d. 309
e. 51
E
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The temperature at the ________ of the Sun's chromosphere is higher than the temperature ________.
A. top; of the Sun's corona B. base; at the top of the chromosphere C. base; of the Sun's corona D. top; at the base of the chromosphere
If a car slows down with the wheels rolling, is the frictional force between the tires and the ground kinetic or static?
A) kinetic B) static
All fission bombs are based on
A) uranium. B) either uranium or plutonium or both. C) isotopes of hydrogen. D) either isotopes of hydrogen or uranium or both. E) laughing gas.
Elizabeth lifts a 10 N book from the floor to the table, a height of 2 m. How much work does Elizabeth do?
A) 20 watts B) 5 joules C) 20 joules D) Elizabeth does zero work E) 5 watts