Physics, 17.07.2019 02:20, gomez36495983
Apotter's wheel—a thick stone disk of radius 0.500 m and mass 115 kg—is freely rotating at 50.0 rev/min. the potter can stop the wheel in 6.00 s by pressing a wet rag against the rim and exerting a radially inward force of 72.0 n. find the effective coefficient of kinetic friction between the wheel and rag.
Answers: 1
Physics, 22.06.2019 21:40, lottie2306
Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.
Answers: 3
Physics, 23.06.2019 11:30, bhjbh7ubb
Which of the following characteristics of earth's relationship to the sun explains the existence of earth's seasons? choose all that apply. earth has a satellite called the moon, which rotates around earth. earth spins on its axis, completing one rotation each day. earth's axis always points in the same direction relative to the stars. earth's axis is tilted relative to its orbital plane. earth orbits around the sun, completing one orbit each year.
Answers: 1
Apotter's wheel—a thick stone disk of radius 0.500 m and mass 115 kg—is freely rotating at 50.0 rev/...
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