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A rocket is flying level at standard sea level conditions and the Mach number indicated is .985. Calculate the speed of the rocket in miles per hour.
A bowling ball of mass 1 kg, drops onto a spring from 0.2 meter height. The spring constant is also 1. What is the velocity when the ball hits the spring
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.303 m. Find the final speed v of the sphere's center of mass
A person is standing in an elevator that is stationary. What is the weight of the person when the velocity is 3 m/s upward and the acceleration is 2 m/s^2 downward
A 150 g trick baseball is thrown at 63 km/h. It explodes in flight into two pieces, How much energy do the pieces gain in the explosion
The only force acting on a 3.0 kg body as it moves along the positive x axis has an x component Fx = -7x N, What is the velocity of the body at x = 4.9 m
A student on a piano stool rotates freely with an angular speed of 3.10 rev/s. The student holds a 1.40-kg mass in each outstretched arm, 0.759 m from the axis of rotation, Calculate the initial and final kinetic energy of the system
A nuclear power plant is 24% efficient, meaning that 24% of the power it generates goes into producing electricity. The remaining 76% is wasted as heat. The plant generates 680 MW of electric power. If each fission releases 200 MeV of energy, how man..
The main water line enters a house on the first floor. The line has a gauge pressure of 1.9*10^5Pascal. A faucet on the second floor, 6.5m above the first floor,is turned off. What is the gauge pressure at this faucet?
A chair of weight 130 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.00 N directed at the angle of 35.0 degrees below the horizontal and the chair slides along the floor. Using Newton's law..
A boat is tied to a dock by four ropes. Two ropes, with a tension of 55 N each, are at right angles to the dock. What is the magnitude of the sum of these forces
A certain automobile manufacturer claims that its super-deluxe sports car will accelerate from rest to a speed of 39.6 m/s in 7.73 s. Find the acceleration of the car
Compute the acceleration of a 0.55m diameter car tire while the car is travelling at a constant speed of 25m/sec. b. compare this with the acceleration experienced by a jet car tire diameter 1 when setting a land speed record of 310m/sec.
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