Which of the following best describes the evolutionary track of the most massive stars?
A) vertically left, then straight down
B) horizontal right
C) horizontal right, then a clockwise loop
D) diagonally to lower right, then vertical, then horizontal left
E) horizontally right, diagonal to lower left, then horizontal right
B
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An electric car runs off a battery. When the driver wants to slow down the car, instead of applying the brakes he or she throws a switch that connects the wheels to a generator that converts the car’s kinetic energy back to energy in the battery.
A. first kind B. second kind
The number of daylight hours at 35°N is greatest during the month of
a. May. b. August. c. June. d. July.
A purpose statement is a formal written summary of reasons for publishing the website.
Answer the following statement true (T) or false (F)
During each cycle of operation a refrigerator absorbs 55.0 cal from the freezer compartment and expels 88.0 cal to the room. If one cycle occurs every 10 s, how many minutes will it take to freeze 575 g of water, initially at 0°C? (Lv = 80 cal/g)
a. 69.7 min b. 1 390 min c. 139 min d. 87.1 min e. 836 min