Physics, 12.07.2019 21:10 Damagingawsomeness2
Adisc-shaped grindstone with mass 50 kg and diameter 0.52m rotates on frictionless bearings at 850 rev/min. an ax is pushed against the rim (to sharpen it) with a normal force of 160 n. the grindstone subsequently comes to rest in 7.5 seconds. what is the co-efficient of friction between ax and stone?
Answers: 3
Physics, 22.06.2019 09:30
On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?
Answers: 2
Physics, 22.06.2019 18:30
Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.
Answers: 1
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Calculate 9 ∙ 10-5 divided by 3 ∙ 10-9. (box after the "10" in answer is for the
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Adisc-shaped grindstone with mass 50 kg and diameter 0.52m rotates on frictionless bearings at 850 r...
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