A bullet and a proton have the same momentum. Which has the longer wavelength?
A) the bullet
B) the proton
C) both the same
Answer: C
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Solenoid: When you double the number of windings in an ideal solenoid while keeping all other parameters (radius, length and current) fixed, the magnetic field at the center of the solenoid will
A. double. B. triple. C. quadruple. D. be reduced by a factor of one-half. E. be reduced by a factor of one-fourth.
An eccentric billionaire wants to build a mansion in a location on Earth where the effect of the seasons is least pronounced. Where should his personal astronomer advise him to build?
A. at the North Pole B. New Jersey C. at the Tropic of Cancer D. at the equator
What are fossil fuels?
A) any fuel that releases CO2 into the atmosphere upon burning B) any fuel that is extracted from the interior of Earth C) mineral-rich deposits from ancient seabeds D) the carbon-rich remains of plants that died millions of years ago E) carbonate-rich deposits from ancient seabeds
A Ferris wheel has diameter of 10 m and makes one revolution in 8.0 seconds. A person weighing 670 N is sitting on one of the benches attached at the rim of the wheel
What is the apparent weight (that is, the normal force exerted on her by the bench) of the person as she passes through the highest point of her motion?