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A ball of mass 8.9 g with a speed of 22.4 m/s strikes a wall at an angle 14.0o and then rebounds with the same speed and angle. It is in contact with the wall for 46.0 ms. What is the magnitude of the impulse associated with the collision force? What is the average force exerted by the ball on the wall?
Charges of 4.0 µC and -6.0 µC are placed at two corners of an equilateral triangle with sides of 0.10 m. At the third corner, what is the electric field magnitude created by these two charges
A thermos contains 130 cm3 of coffee at 85° C. To cool the coffee, you drop two 13-g ice cubes into the thermos, What is the final temperature of the coffee
An object placed 2.6 meters in front of a mirror produces an inverted image of one half the size. find Is it convex or concave
question1two charged pith balls are suspended on extremely light 102 strings. each has a mass 10g. in stability the
suppose that a 1.00 cm3nbspbox in the shape of a cube is perfectly evacuated except for a single particle of
What photon energy (eV) is required to excite the hydrogen electron in the innermost (ground state) Bohr orbit to the first excited orbit?
A 1.02 liter flask contains a certain quantity of ideal gas at 315 K. Then an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.60 times its original value. What is a final temperature.
A passenger train is travelling at 32 m/s when the engineer sees a freight train 384 m ahead of his train travelling in the same direction on the same track. The freight train is moving at a speed of 5.7 m/s.
A wheel rotates about a horizontal axis, as shown in the figure. It has an outer radius R1 = 18.8 cm and mass M1 = 4.51 kg. What is the acceleration of the hanging weight after it is released
At what angle should the axes of two Polaroids be placed so as to reduce the intensity of the incident unpolarized light to 1/5
q1. a 500.0 g pot of water at room temperature 20.0 degrees c is placed on a stove. how much heat is required to change
A square, 0.67 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. What is the magnitude of the maximum torque
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