Uncertainty Principle Using Energy and Time: If the maximum possible accuracy in measuring the energy of a particle increases, the maximum possible accuracy in measuring its lifetime will
A. increase.
B. decrease.
C. not be affected.
Answer: B
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If the tilt of Earth's rotation axis was increased from 23.5° to 40°, what would we expect to change?
A) Seasons on Earth would become more extreme (hotter summers, colder winters). B) Seasons on Earth would become less extreme (cooler summers, warmer winters). C) The Earth would not experience seasons anymore. D) Nothing would change about weather on Earth.
The slope of a velocity vs. time graph is the acceleration
a. True b. False Indicate whether the statement is true or false
An all-terrain vehicle of 2 000 kg mass moves up a 15.0° slope at a constant velocity of 6.00 m/s. The rate of change of gravitational potential energy with time is
a. 5.25 kW. b. 24.8 kW. c. 30.4 kW. d. 118 kW. e. 439 kW.
Gravitational Potential Energy: A stone is held at a height h above the ground. A second stone with four times the mass of the first one is held at the same height. The gravitational potential energy of the second stone compared to that of the first stone is
A. one-fourth as much. B. one-half as much. C. twice as much. D. four times as much. E. the same.