Physics, 06.03.2020 15:28 jcultr4s3nse
You probably think of wet surfaces as being slippery. Surprisingly, the opposite is true for human skin, as you can demonstrate by sliding a dry versus a slightly damp fingertip along a smooth surface such as a desktop. Researchers have found that the static coefficient of friction between dry skin and steel is 0.27, while that between damp skin and steel can be as high as 1.4. Suppose a man holds a steel rod vertically in his hand, exerting a 400 N grip force on the rod. A. What is the heaviest rod he can hold without slipping if His hands are dry?b)What is the heaviest rod he can hold without slipping if his hands are wet?
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Physics, 22.06.2019 22:00
Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.
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Physics, 22.06.2019 22:20
One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 โ 103 m/s and sticks, given the collision lasts 6.00 โ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.
Answers: 2
Physics, 22.06.2019 22:30
You add 800 ml of water at 20c to 800 ml of water at 80c what is the most likely final temperature of the mixture ? a. 100c b. 60c c. 25 c d.50c
Answers: 1
You probably think of wet surfaces as being slippery. Surprisingly, the opposite is true for human s...
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