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A rubber ball of mass 27.5 g is dropped from a height of 1.85 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.40 m. What impulse was applied to the ball during the collision?
A rifle is aimed horizontally at a target 58 away. The bullet hits the target 2.5 below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
Two point charges of equal magnitude are 7.3cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 40N/C . Find the magnitude of the charges.
A particular wire has a resistivity of 3.5 ? 10-8 ·m and a cross-sectional area of 3.9 ? 10-6 m2, What length of wire is required
A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude..
Travelling at a speed of 17.10 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.740. What is the speed of the automobile after 1.81 s have el..
A baseball has a velocity of 41.5 m/s (92.8 mi/h), directed horizontally, as it is released by a pitcher. Calculate the ball's instantaneous acceleration just before it is released
For a damped oscillator with a mass of 360 g, a spring constant 110 N/m and a damping coefficient of 87.00 g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
A girl delivering newspapers covers her route by traveling 9.99 blocks west, 4.00 blocks north, and then 1.00 blocks east
Two capacitors have the same plate separation, but one has square plates and the other has circular plates, at is the dielectric constant kcircular of the material between the circular plate
Suppose that the mass of the dishwater is large as much as necessary so that its temperature does not change appreciably.
How long after the car passes point A does the radio experience a minimum in the net signal? suppose that the wavelength has the value found in part.
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, giving it a charge of -15.0 microC. find the electric field: (a) just inside the paint layer, b) just outside the paint layer and c) 5..
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