Asled of mass 50 kg is pulled along snow-covered, flat ground. the static friction coefficient is 0.30, and the sliding friction coefficient is 0.10.. a) what does the sled weigh? . b) what force will be needed to start the sled moving? . c) what force is needed to keep the sled moving at a constant velocity? . d) once moving, what total force must be applied to the sled to accelerate it 3.0 m/s/s? . answers: . a. 490 n. b. 150 n. c. 49 n. d. 200 n
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Physics, 21.06.2019 18:00
Acommercial passenger jet can travel up to 970 km/hr at an altitude of 30,000 feet. at this speed, how long will it take the jet to travel 1,865 kilometers? a. 2.3 hrs b. 1.9 hrs c. 1.7 hrs d. 1.5 hrs
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Physics, 22.06.2019 02:30
Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.
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Physics, 22.06.2019 12:30
Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.
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Physics, 22.06.2019 15:10
When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.
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Asled of mass 50 kg is pulled along snow-covered, flat ground. the static friction coefficient is 0....
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