In the operation of a steam-electric generating plant, the work output [from thermal energy to work] occurs
A) at the point where the fossil or other fuel is shipped into the plant area.
B) in the condenser.
C) at the point where the energy from the furnace is transferred into the boiler.
D) at the point where the hot steam pushes against the turbine.
E) in the electric generators.
D
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The neutral hydrogen atom consists of
a. one proton and one neutron. b. one proton. c. one proton, one neutron, and one electron. d. one proton and one electron. e. an isotope and an ion.
A recurrent nova could eventually build up to a:
A) planetary nebula. B) type I supernova. C) type II supernova. D) hypernova. E) quasar.
What should be the angle between the reflecting surfaces of two plane mirrors in order for every incident beam to be parallel to its reflected beam?
A) 0° B) 30° C) 45° D) 60° E) 90°
What must you do to get away from the harmful effects of radioactivity?
A) live at the North or South Poles. B) go deep beneath Earth's surface. C) go to the Moon. D) die.