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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
In uniform circular motion, a particle undergoes motion in a circular path with a constant speed. Which of the following statement is false and why?
In a slide or movie projector, the film acts as the object whose image is projected on a screen. how wide will the picture be on the screen
what is the max number of steps any worker should be allowed.
A small, 100g cart is moving at 1.2 m/s on an air track while it collides with a larger, 1.00kg cart at rest. After the collision, the small cart recoils at .850 m/s. what is the speed of the large cart after the collision.
Compute the position, velocity vector and the distance attained by athlete in a long jump event.
A pilot wants to fly due north a distance of 125 km. The wind is blowing out of the west at a constant 35 km/h. If the plane travel at 175 km/h, how long would the trip take.
A major league catcher catches a fastball moving at 80.0mi/h and his hand and glove recoil 10.0 cm in bringing the ball to rest. If it took 0.00500s to bring the ball (with a mass of 300g ) to rest in the glove,
The density of free electrons in gold is 5.90 x 10^28 m-3. The resistivity of gold is 2.44 x 10-8 at a temperature of and the temperature coefficient of resistivity is 0.004 ()-1. A gold wire, 1.30mm in diameter and 27cm long, carries a current of..
In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. What is the electron's orbital frequency
A 3.500 kg puppet oscillates at the end of a light spring of constant k = 8.00 N/m. What is the frequency of the oscillations
Three charges sit at the corners of an equilateral triangle with sides of length d = 3cm. Calculate the electric potential at the centre of the triangle
From the shape of total energy vs. time plot, what can you conclude about the conservation of mechanical energy in your mass and spring system.
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