The names of the seven days of the week are derived from the names of the members of the solar system that are visible to the naked eye
Indicate whether the statement is true or false
TRUE
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Thermodynamic Processes: When a gas expands adiabatically,
A. the internal (thermal) energy of the gas decreases. B. the internal (thermal) energy of the gas increases. C. it does no work. D. work is done on the gas. E. the temperature of the gas remains constant.
A velocity selector uses a fixed electric field of magnitude E and the magnetic field is varied to select particles of various energies. If a magnetic field of magnitude B is used to select a particle of a certain energy and mass, what magnitude of magnetic field is needed to select a particle of equal mass but twice the energy?
A. 0.50 B B. 1.4 B C. 2.0 B D. 0.71 B E. 1.7 B
Why is the cause of the acceleration of the universe called "dark energy"?
A) Dark energy and dark matter are just two forms of the same thing. B) The term dark energy was the one that caught on with other astronomers. C) We're pretty sure that whatever is causing the acceleration is pure evil.
Light of wavelength 687 nm is incident on a single slit 0.75 mm wide
At what distance from the slit should a screen be placed if the second dark fringe in the diffraction pattern is to be 1.7 mm from the center of the diffraction pattern? A) 0.39 m B) 1.9 m C) 1.1 m D) 0.93 m E) 0.47 m