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An open train car, with a mass of 2210 kg, coasts along a horizontal track at the speed 2.47 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.83 s at the rate of 431 kg/s. What is the car's speed after the loading is completed? Ignore rolling friction (as unrealistic as that may be).
_________ m/s
The indices of refraction for violet light (? = 400 nm) and red light (? = 700 nm) in diamond are 2.46 and 2.41, Calculate the angular separation between these two colors of light in the refracted ray
In a series R-L-C circuit, R = 320? , XC = 260? and XL = 600? . The average power consumed in the resistor is 60.0W. What is the rms voltage of the source
question1a small object with the mass of 380 mg carries a charge of 35.0 nc and is suspended by a thread between
Find the frictional torque, which is assumed to be constant. Find the moment of inertia of the wheel.
A constant force of 23 N pulls on a 12 kg block on a horizontal surface. What is the work done by the constant force
A 0.16-kg ball on a stick is whirled on a vertical circle at a constant speed. Find the tension in the stick
A sample of an unknown substance appears to weigh 15.1 N in air and 9.18 N when immersed in a solvent with density 0.945 g/mL. Find the density of the sample
A straight wire segment 4 m long makes an angle of 30° with a uniform magnetic field of 0.37 T. Find the magnitude of the force on the wire
A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. What impulse was given to the ball by the floor
A 25,000-kg subway train initially traveling at 10.5 m/s slows to a stop in a station and then stays there long enough for its brakes to cool. The station's dimensions are 67.0 m long by 18.5 m wide by 12.5 m high.
An incident photon of energy 8 eV knocks out the electron from metal surface with KE of 7 eV, Find the work function of the metal surface in eV
David is driving a steady 26 when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.8 at instant when David passes.
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