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a 15 g rubber bullet hits a wall with a speed of 150 m/s. The bullet bounces back with a speed of 120 m/s after being in contact with the wall for 0.003 s. What force did the wall apply to the bullet?
the light intensity incident on a metallic surface with a work function of 1.17eV produces photoelectrons with maximum kinetic energy of 4.17eV. what is the maximum kinetic energy of the photoelectrons
How much work did the movers do pushing a 160 kg crate 10.3 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50.
The air inside a bicycle tire pump has 243 joules of work done on it as 66.5 joules of heat is conducted away from it
A shopper walks from the door of the mall to her car 250m down the line of cars, and then turns 90 degrees to the right and walks an additional 60 meters. What is the magnitude of the displacement of her car from mall door.
define the magnitude of the initial velocity. use 9.81 m/s^2 for the acceleration due to gravity on earth.
What is the average speed of a rider on this Ferris wheel.
Initially, an object is 12cm to the left of a convex lens of focal length 8.2cm, then a concave (diverging) lens of local length -9cm is placed 20cm to the right of the convex lens, find the Image distance from concave lens
A block whose weight is 41.0 N rests on a horizontal table. A horizontal force of 36 N is applied to the block, what will be the block's acceleration? (If not, enter 0.)
Two insulated wires, each 2.94 m long, are taped together to form a two-wire unit that is 2.94 m long. One wire carries a current of 8.36 A, What is the current I
Light is reflected from a transparent coffee table. When the angle of incidence is 63.3°, What is the index of refraction of the material of the table
A spherical capacitor contains a solid spherical conductor ofradius 0.1 mm with a charge of 3.7 microCoulombs, compute the electric field everywhere
A charge of -2.05 nC and a charge of -6.20 nC are separated by a distance of 70.0 cm. Find the position at which a third charge of +7.20 nC can be positioned ( from the -2.05 nC charge) so that net electrostatic force on it is zero.
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