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A child in a boat throws a 5.45-kg package out horizontally with a speed of 10.0 m/s. The mass of the child is 26.8kg and the mass of the boat is 39.0kg. Calculate the velocity of the boat immediately after, assuming it was initially at rest.
A 9 ohm resistor are connected in series to a power supply. The voltage drop across the 6 ohm resistor is measured with a amphmeter and found to be 12.0 volts. what is the voltage setting of the power supply
A fisherman reels in 12 of line while landing a fish, using the constant forward pull of 35. How much work does the tension in the line do on fish.
Assume that your reaction time is 0.50 s and that your car brakes with constant acceleration. How far are you from the intersection when you begin to apply the brakes? Illustrate what acceleration will bring you to rest right at the intersection?
A 61.0 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12.0 m .If the skier's speed at point A is 7.50 m/s (before entering dip), what is the normal force exerted by the snow on the skie..
A 11.4-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.1 m/s, find the rotational kinetic energy
A mass of 180g is held by a horizontal spring of constant 22 N/m. It is displaced from its equilibrium position and released from rest. What is the magnitude of initial displacement
Two soccer players start from rest, 30 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
Two in phase speakers are set up in a field 10.0 meters apart. you stand directly in between the speakers with one on your left and the other on your right. What frequency is being emitted by both speakers
After the Sun exhausts its nuclear fuel, its ultimate fate might be to collapse to a white dwarf state. In this state, it would have about the same mass as it has now, but its radius would be equal to the radius of the Earth.
Light inside an optical fiber tube hits the wall between the tube and air and is totally internally reflected. what is the index of refraction of the tube
An object is 32cm in front of a converging lens with a focal length of 6.9cm, Use ray tracing to determine the location of the image
Suppose a block with mass 2.30kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.420. Find the maximum static friction force that acts on the block.
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