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A lady is pushing a 96 kilogram crate across a floor at a constant velocity with a 362 Newton horizontal force. If she pushes harder, exerting a force of 388 Newton on the crate, determine what acceleration will the crate have?
A proton is placed at the origin of any y coordinate system. The proton is floating because an electron is fixed on the y-axis, How far away from the proton in the electron
Using a block of a transparent, unknown material, it is found that a beam of light inside the material becomes totally internally reflected at the air-block interface at an angle of 48°. What is its index of refraction?
A particle of charge +3.0 x 10-8 is in a unifromelectric field directed to the left. It is released from rest andmoves a distance of 5.0 cm and its kinetic energy is increased by+4.5 x -4 J.
A steel section of the Alaskan pipeline had a length of 67.6 m and a temperature of 16.1?C when it was installed. What is its change in length
A 1.16 kg beaker containing 2.37 kg of oil of density 923 kg/m3 rests on a scale. A 2.22 kg block of iron is suspended from a spring scale and is completely submerged in the oil, Find the equilibrium reading of the spring scale.
A copper wire has a resistance of 0.400 at 20.0°C, and an iron wire has a resistance of 0.430 at the same temperature
A circuit consists of a 12.0- battery connected to three resistors (40 , 16 and 120 ) in series. Find the current that flows through the battery
A ball is thrown horizontally from the roof of a building 47.0m tall and lands 21.3m from the base. What was the ball's initial speed
During the spin cycle of your clothes washer, the tub rotates at a steady angular velocity of 37.5 rad/s. Find the angular displacement of the tub
A 250, 35-cm-diameter turntable rotates on frictionless bearings at 60. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of the turntable.
A hydrogen atom emits a photon having an energy of 12.1 eV. What's the frequency of the photon
The nucleus of the hydrogen atom has a radius of about 1.1 x 10-15 m. The electron is at a distance of about 5.2 x 10-11 m from the nucleus. find the volume of the atom
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