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On a frictionless horizontal air table, puck A (with mass 0.255 kilogram) is moving toward puck B (with mass 0.375 kilogram), which is initially at rest. After the collision, puck A has velocity 0.119 m/s to the left, and puck B has velocity 0.655 m/s to the right.
Find what was the speed of puck A before the collision?
Compute the change in the total kinetic energy of the system that occurs during the collision?
A 130 g copper bowl contains 240 g of water, both at 20.0°C. How much energy (in calories) is transferred to the water as heat
The surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of 1.50 m/s, how much work is done by the (non-conservative) force of the wave
determine the required force of p that must be applied at the blade of the pruning shears so that the blade exerts a
A penny is placed at the outer edge of a disk radius = .150 m that rotates about an axis that is perpendicular to the plane of the disk at the center. The period of the rotation is 1.80 s. Find out the minimum coefficient of friction neccesary to..
A falling skydiver of mass 86.0 kg accelerates downward at 6.7 m/s2. What is the upward force due to air resistance
a bullet is fired through a board 14.0 cm thick with its line of motion perpindicular to the face of the board. if it
The distances from the Sun at perihelion and aphelion for Pluto are4.410 109 km and 7.360 109 km, respectively. What is the ratio of Pluto's orbital speed around the Sun at perihelion to that at aphelion?
A rotating fan completes 1200 revolutions every minute. Consider a point on the tip of a blade, at a radius of .20 m.
Initially at rest, a small copper sphere with a mass of 2.77·10^-6 kg, What is the radius of curvature of the sphere's motion in the magnetic field
A starship is exploring a new star system. The ship is a light-minutes away from the star, which has a radius of 106km. The intensity at the location of the starship is 240 W/m^2.
Starting from rest a 92 kilogram fire fighter slides down a fire pole. Compute how far did he slide down the pole
Two window washers, Sally and Tom, are on a 3.00 m long 345 N uniform scaffold supported by two cables attached to its ends. Sally weighs 750N and stands 1.00 m from the left end. Two meters from the left end is the 500 N washing equipment.
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