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A 40-W heat source is applied to a gas sample for 50s, through which time the gas expands and does 750 J of work on its surroundings. By how much does the internal energy of the gas change?
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the magnetic drag force due to eddy currents on a conducting plate moving during a magnetic field means that a plate
compute the gravitational potential due to a thin rod of length l and mass m at a point p located a distance r from the
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eratosthenes gauged the circumference of the earth by noting that the sun is at an angle of 7deg south of the vertical
a particle m20 mg q-50 uc moves in a uniform electric field of 60 nc in the positive x direction at t0 the particle is
we have an air flow inside a frictionless duct with heat transfer at location 1 flow has pressure p1 1 atm t1 288 k
movement of stagnant air over a surface typically decreases the pressure that air exerts on the surface it was in
air expands adiabatically no heat in no heat out from t 300 k and p 100 atm to a final pressure of 1 atm treat the
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