Which of the following actions in a car cause it to accelerate?
a. Stepping on the gas pedal to speed the car up.
b. Pressing the brake pedal to slow the car down.
c. Turning the steering wheel to drive in a curved path at constant speed.
d. Any of the above.
e. Only a. or b. above.
d
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Which of the following agrees with a no-center, no-edge Universe?
a. a flat geometry b. a positive-curved geometry c. a negative-curved geometry d. All of the other choices are correct.
The largest planet in the solar system is
a. Jupiter. b. Neptune. c. Uranus. d. Saturn. e. Mars.
The percentage volume of unoccupied space in a material is called its
a. traction. b. porosity. c. permeability. d. salinity.
The exclusion principle
A. excludes electrons from atomic nuclei. B. means that no two electrons in an atom can have the same orbit. C. implies that in an atom no two electrons can have identical sets of quantum numbers. D. excludes protons from electron orbits.