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A 2.00 kg steel ball strikes a massive wall at 15.0 m/s at an angle of 60.0 degrees with the plane of the wall. It bounces off the wall with the same speed and angle. Find the change in momentum along y and x directions. If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ball?
A concave mirror ( f = 51 cm) produces an image whose distance from the mirror is one-third the object distance, determine the object distance and the image distance
light of wavelength 6.7x10^-7m travels first through air, and then enters a medium of higher index of refraction. what is the new speed of the light wave
what is its kinetic energy at the end of the interval. How high a tree would a 80 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat.
A point charge +6.7 uC is placed at the origin, and a second charge -3.6 uC is placed in the X - Y plane at (0.40 m , 0.55 m ). Where should a third charge be placed in the plane so that the net force acting on it is zero? Express your answers usi..
After 1.86 days, the activity of a sample of an unknown type radioactive material has decreased to 88.8% of the initial activity
What are new charge on spheres - Two insulated charge Cu spheres A and B OF IDENTICAL size have charge qa and -3qa
What percentage of the input energy needed to pump the water up to the top tank could you recover from the turbine as the water ran back to the bottom tank, two 15,000 litre water tanks and put one on a frame 3m higher than the other,
In a double slit experiment, monochromatic light of wavelength 660 nm passes through a pair of slits separated by 3.40 x 10-5 m. find the angle corresponding to the first bright fringe
While looking into a silver Christmas ornament, If your nose is only 6.25 inches from the ornament, and the diameter of the ornament is 4.85 cm, how far behind the ornament does your nose appear
You are stranded on a deserted island. You have some wire, but no magnets. You decide to use the Earth's magnetic field, the only one available to you. What area must the coil have
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