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A car with a flat top contains a 3.2-cm thick piece of ice lying on its top. Determine how fast this car must travel through still (0?C) air if the piece of ice is to lift off the car. Assume that only the weight of the ice holds it to the car's top and no air flows under the ice while the car is moving.
(a) 15.1 m/s
(b) 17.1 m/s
(c) 19.1 m/s
(d) 21.1 m/s
(e) 23.1 m/s
(f) None of the above.
A spring in a toy gun has a spring constant of 9.15 N/m and can be compressed 18.0 cm beyond the equilibrium position. Find the muzzle speed of the pellet
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A 1,110-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 8,900-kg truck moving in the same direction at 20.0 m/s, What is the velocity of the truck right after the collision
An archeologist on a dig finds a fragment of an ancient basketwoven from grass. What is the age of the basket
A torque of 24.0 N m is applied to a solid disk, accelerating itfrom rest to an angular velocity of 140.0 rpm. (The disk has a massof 2.00 kg and a radius of 0.200 m.) What is the final rotational kinetic energy of the disk?
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