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An object is subject to a restoring force F = 8x3, where x is the displacement of the object from its equilibrium position and the force is measured in Newton's. How much work must be done to move the object from x = 0.10 to x = 0.47 m?
Find out the normal force exerted on the crate by the elevator.
A person with perfect pitch sits on a bus bench listening to the 450 Hz horn of an approaching car. If the person detects the frequency of 470 Hz, how fast is the car moving.
Oasis B is located 25 km east from oasis A. A camel starts from oasis A and travels 19.6 km in the direction 14.7 degrees south of east. Then it walks 8 km directly to the north. How far is the camel from oasis B?
A farsighted man uses eyeglasses with a refractive power of 2.10 diopters. Wearing the glasses 0.03 m from his eyes, What is the correct contact lens prescription
An Automobile engine slows down from 4500 rpm to 1200 rpm in 2.50 s. Calculate (a) its angular acceleration, assumed constant and (b) total number of revolutions the engine makes in this time.
Superman is jogging alongside the railroad tracks on the outskirts of Metropolis at 150 km/h. What is superman's final speed
When a rubber band is stretched a distance x, it exerts a restoring force F = -2x + 5x^5. What is the work done in stretching this rubber band from x=0 to x=2.
A 4-kg rock is tied to the end of a string and twirled overhead, 1.7 m above the ground, in a 1.1-m radius, horizontal circle. How far away from its location when the string breaks will the rock hit the ground
An airplane reaches a velocity of 71.0m/s when it takes off. What is should its acceleration be if the runway is 1-km long.
The suspension system of your 1200 kg car has a natural oscillation frequency of 2.00 Hz without functioning shock absorbers. At what speed are you driving
You are asked to design a parallel-plate capacitor having a capacitance of 1 F and a plate separation of 1.00 mm. compute the required surface area of each plate. Is this a realistic size for a capacitor.
A container holds 1.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 7.7x10-3 kg bullet with a speed of 630 m/s
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