Physics deals with force, energy, motion, and ______________
Fill in the blank(s) with correct word
matter
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Atmospheric pressure at an altitude of 10,000 m is exactly half of what it is at 5,000 m
a. True b. False Indicate whether the statement is true or false
Which approach is currently proving to be the most promising way of determining how life on Earth originated?
A) studies of Martian meteorites B) studies of organisms living around deep-sea ocean vents C) studies of the fossil record D) laboratory simulations of conditions present on the early Earth
An astronomical unit (AU) is equal to the average distance from the Earth to the sun, about 92.9 × 106 mi. A parsec (pc) is the distance at which 1 AU would subtend an angle of 1 second of arc. How many miles are there in a parsec?
What will be an ideal response?
Two cars are traveling around identical circular racetracks. Car A travels at a constant speed of 20 m/s. Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s. When car B has the same (tangential) velocity as car A, it is always true that:
a. it is passing car A. b. it has the same linear (tangential) acceleration as car A. c. it has the same centripetal acceleration as car A. d. it has the same total acceleration as car A. e. it has traveled farther than car A since starting.