A pipe of length 10.0 m increases in length by 1.5 cm when its temperature is increased by 72°F. What is its coefficient of linear expansion?
a. 38 × 10^?6/°C
b. 75 × 10^?6/°C
c. 68 × 10^?6/°C
d. 28 × 10^?6/°C
e. 47 × 10^?6/°C
a
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a. an hour b. a day c. a week d. two weeks or a fortnight
A typical white dwarf is
A) as massive as the Sun but only about as large in size as Earth. B) as large in diameter as the Sun but only about as massive as Earth. C) about the same size and mass as the Sun but much hotter. D) as massive as the Sun but only about as large in size as Jupiter.
Which event in the history of the universe happened last?
A) Stable helium nuclei formed. B) The electroweak force separated into electromagnetic and weak nuclear forces. C) The GUT force separated into the electroweak force and strong force. D) Neutral atoms formed.
In our location in the Milky Way, the galactic disk is only about ________ ly thick
A) 10 B) 100 C) 1,000 D) 10,000 E) 100,000