Almost all stars on the main sequence range from 0.1 to 15 solar radii
Indicate whether the statement is true or false
TRUE
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The bacteria species known as Deinococcus radiodurans has evolved to survive extreme levels of
A) cold B) heat C) salinity D) radiation
Why is the air at higher altitudes cooler than that at lower altitudes?
A. Because of the relation expressed in Charles' Law, V/T = constant. B. Because of the relation expressed in Gay-Lussac's Law, P/T = constant. C. Because of the relation expressed in Boyle's Law, PV = constant.
Which of the following is not a fossil fuel?
a. Uranium b. Oil c. Coal d. Gas
Is the moon accelerated?
A) No, because there is no gravity in space. B) No, because the gravitational force on it is balanced by the centrifugal force. C) Yes, its acceleration is directed forward, along its direction of motion. D) Yes, its acceleration is directed inward toward Earth. E) Yes, its acceleration is directed outward away from Earth.