What is indicated by a gasoline's octane rating?
A) the degree of branching in the gasoline hydrocarbons
B) the degree at which the compound ignites
C) the percentage of octane in the mixture
D) a measure of how many degrees it takes to ignite a mixture of octane
E) none of the above
Answer: A
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A starship navigator measures the distance between the Earth and the sun. If the ship is moving at a speed of 0.90 c, instead of obtaining 93 million miles, the navigator measures a distance (in millions of miles) of
a. 41. b. 30. c. 80. d. 215. e. 90.
What is binding energy, and what physical effect causes it?
What will be an ideal response?
The dumped sediment from a stream flowing into standing water is called a
A) delta. B) floodplain. C) drainage basin. D) divide.
What number of turns on the secondary is needed to reduce the voltage from 120 V to 9.0 V if there are 40 turns on the primary of a step down transformer?
A. 3 B. 9 C. 18 D. 120 E. 530