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A rock of mass 0.25 kilogram falls from rest from a height of 20 meter into a pail containing 0.31 kilogram of water. The water and rock have the same initial temperature. The specific heat capacity of the rock is 1840J/(kg•°C). Neglect the heat absorbed by the pail itself, and find the rise in the temperature of the water and rock.
a parallel-plate air capacitor of area a25.0cm2 and plate separation d3.80mm is charged by a battery to a voltage 58.0
A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 6.50m above the base of the hill. At what rate was it rotating at the base of the hill
A 34 g bullet travelling at 120m/s embeds itself in awooden block on a smooth surface. The block then slides toward aspring and collides with it. Calculate the mass of the block of wood
Starting from rest, a 5.2-kg blockslides 2.40 m down a rough 30.0°incline. The coefficient of kinetic friction between the block and the incline is µk = 0.436. Determine the work done by the force of gravity.
What is the maximum energy that a free electron (initiallystationary) can acquire in a collision with a photon of energy 4keV?
Consider two particles with masses that differ by a factor of 325. what is the ratio of their kinetic energies
A 3.10-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 73.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque abou..
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 35.6°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Fin..
a charge of -11.1 micro-coulombs is placed at the origin of a coordinate system. another charge of -12.1 micro-coulombs
a. a lever is used to lift a heavy load. when a 40 n force pushes one end of the lever down 2.2 m the load rises 0.8 m.
A block is projected up a frictionless inclined plane with initial speed v0 = 8.50 m/s. The angle of incline is ? = 27.7°. How far up the plane does it go
A stone is dropped into the water from a bridge 144ft above thewater. another astone is thrown vertically down 1s after thefirst is dropped. what was the initial speed of the second stone
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