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1. A cart moving at 35.00 m/s is brought to a stop by the force plotted in the force-time graph shown here. What is the impulse and the approximate mass of the cart.
2. A 9.0 kg rock starting from rest free-falls through a distance of 50.0 m. Assuming no air resistance, What is the amount of momentum that is transferred from the rock to earth as it collides with earth's surface. What is the change in velocity of earth as a result of this momentum change? The earth's mass is 60 x 10^24, and is a closed system.
A capacitor that is initially uncharged is connected in series with a resistor and an emf source with E = 100 Vand negligible internal resistance. Just after the circuit is completed, the current through the resistor is 6.2×10-5 A. The time const..
You walk 3.5m in front of a large round mirror. You see yourimage right side up and apparently half your size (height). What is the focal length of the mirror and what kind of mirror isit?
A 67 kg man weighs 637 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 19 percent of the body weight.
Knowing that the motor is constrained to move vertically, use computational software to calculate and plot the amplitude of the vibration and the maximum acceleration of the motor for motor speeds of 1000 to 2500 rpm
From the top of a 70 m building, you throw a ball straight up at 6 m/s. The ball misses the building on the way down. What is the maximum height of the ball? What is the velocity of the ball after 2 s?
A copper (Young's mudulus 1.1 x 10^11 N/m2) cylinder and a brass (Young's mudulus 9.0 x 10^10 N/m2) cylinder are stacked end to end, Find the amount by which the length of the stack decreases
in order to improve sharpness of pictures photographers sometimes decrease lenss aperture i.e. cover part of the lens.
An electron is accelerated by a constant electric field of magnitude 325 N/C. Find the acceleration of the electron
A red 2·kg ball traveling 8·m/s due north collides with a green 2·kg ball traveling 5·m/s due west, what direction is he green ball going after the collision
Tension is maintained in a string The observed wave speed is 26.5 m/s when the suspended mass is m = 2.87 kg. What is the mass per unit length of the string
a sample of serum has a mass of 54 mg and a volume of 225 cm3. what is its density in gcm3? what would be the mass of
A high diver of mass 70kg jumps off a board 10 meters above the water. what average upward force did the water exert on the on the diver
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