Answers: 2
Physics, 22.06.2019 16:30
Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)
Answers: 1
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1Γ105 wm-2k-1 and tβ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
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Physics, 23.06.2019 01:00
Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
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Physics, 23.06.2019 02:20
3. a particle with initial velocity vβ 0=(5.85Γ103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is bβ =β(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.
Answers: 2
Joe is holding a book over his head. is he preforming work? why?...
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