Energy transport by ____________________ is important when photons cannot readily travel through a gas
Fill in the blank(s) with correct word
convection
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A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump?
A. 1.0 B. 1.5 C. 2.5 D. 2.8
Imagine that this classroom contains a constant magnetic field that points from the front to the back. In front of you a negative charge is slowly moving horizontally to your left. As you watch, the magnetic force on the charge
A. deflects the charge away from you. B. deflects the charge into a clockwise directed vertical circle. C. has no effect on the charge. D. deflects the charge into a counterclockwise vertical circle. E. deflects the charge toward you.
If a reaction is exothermic and produces large quantities of heat reaching equilibrium, its equilibrium constant will be
A) negative, because it is an exothermic reaction. B) zero, because the reaction will not have an equilibrium constant. C) small (less than. D) large.
Rotational Kinetic Energy: Consider a uniform hoop of radius R and mass M rolling without slipping. Which is larger, its translational kinetic energy or its rotational kinetic energy?
A. Translational kinetic energy is larger. B. Rotational kinetic energy is larger. C. Both are equal. D. You need to know the speed of the hoop to tell.