The antimatter equivalent of an electron is called a
A) positron
B) antielectron
C) antipositron
D) poselectron
A
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The car lift in a gas station operates with an air pressure of 2000 kPa. The piston of the car lift has a diameter of 30.0 cm. What is the mass of the largest car that the lift can raise?
A. 8,750 kg B. 9,450 kg C. 10,300 kg D. 14,400 kg E. 17,500 kg
What did the Michelson—Morley experiment demonstrate?
A) The speed of light that we observe is not affected by Earth's motion around the Sun. B) The speed of light that we observe is different depending on the time of year. C) The speed of light that we observe is not affected by the gravity of the Moon. D) The speed of light that we observe is not affected by the medium in which it travels.
Solar power is used in many parts of the world for
A) heating water. B) generating electricity. C) both of these D) neither of these
Starting with a sample of pure parent radionuclide, what would be the ratio of the parent radionuclide to its daughter after one half-life has elapsed?
a. 1 to 1 b. 1 to 2 c. 1/2 to 1 d. 2 to 1