Two cylindrical bars, each with diameter of 2.40 cm, are welded together end-to-end. one of the original bars is copper (resistivity 1.72e-8 ohm*m) and is 0.330 m long. the other bar is platinum (resistivity 10.60e-8 ohm*m) and is 0.125 m long. what is the resistance between the ends of the welded bar at 20 degrees celsius ?
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Physics, 22.06.2019 04:30, AShevel6767
In a system, when potential energy decreases, then entropy also decreases. true false
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Physics, 22.06.2019 16:00, ggdvj9gggsc
Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.
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Physics, 22.06.2019 23:00, aliyyahlove
Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
Answers: 3
Two cylindrical bars, each with diameter of 2.40 cm, are welded together end-to-end. one of the orig...
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