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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Astronomers can tell whether a light source approaches or recedes from Earth by
A) its temperature. B) its change in temperature. C) its absorption spectra. D) the Doppler effect. E) all of the above
Consider the following statement, and explain whether or not it is sensible: When I looked into the dark fissure of the Milky Way with my binoculars, I saw what must have been a cluster of distant galaxies
What will be an ideal response?
Sedimentary layer A lies above sedimentary layer B, and both are cut by an igneous dike, C. Therefore, the order from oldest to youngest is
a. A, B, C. b. C, B, A. c. B, A, C. d. none of these.
Earth is closest to the Sun in January and farthest from the Sun in July. Compare the number of seconds in an Earth day for these two months