Physics, 13.11.2019 03:31 antasia12342
Agrinding wheel is a uniform cylinder with a radius of 6.30 cm and a mass of 0.590 kg .calculate the applied torque needed to accelerate it from rest to 1750 rpm in 4.80 s . take into account a frictional torque that has been measured to slow down the wheel from 1500 rpm to rest in 65.0 s .
Answers: 3
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If the speed of a particle triples ,by what factor does its kinetic energy increase?
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Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k
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Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius
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Physics, 22.06.2019 22:00
1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light
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Agrinding wheel is a uniform cylinder with a radius of 6.30 cm and a mass of 0.590 kg .calculate the...
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