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Two carts are put back to back on a track. cart A has a spring-loaded piston; cart B which has twice the inertial mass of cart A is entirely passive. when the piston is released, it pushed against cart B and the carts move apart. how do the magnitudes of the final momenta and kinetic energies compare?
How much heat would flow by the glass in 1.00 h if there is a temperature difference of 3^circ {rm C} between the inner and outer surfaces.
A wooden raft has a mass of 65 kg. When empty it floats in water (density 1000 kg/m3) with 41percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
a 150 Watt computer (computer plus flat panel monitor) is turned on 8.0 hours per day. if electricity costs $0.15/kWh, how much does it cost to run the computer annually
One component of a magnetic field has a magnitude of 0.040 T and points along the +x axis, while the other component has a magnitude of 0.030 T, What is the angle that the net force makes with respect to the +x axis
an initially stationary block of mass m on a floor. A force of magnitude F = 0.580·mg is then applied at upward angle ? = 16°. What is the magnitude of the acceleration of the block across the floor if (a) ?s = 0.600 and ?k = 0.500
Assume that the total energy E of an electron greatly exceeds its rest energy. If a photon has a wavelength equal to the de Broglie wavelength of the electron, what is the photon's energy
A monatomic ideal gas in a rigid container is heated from 212 K to 305 K by adding 7840 J of heat
Minh pulls a 10-kg crate on a rough inclined ramp with a cable tension F, directed towards the top and parallel to the plane. The angle of inclination of the plane is 30 and the coefficients of static and kinetic friction between the block and the in..
A penny has a mass of 2.5 and is 1.5 thick; a nickel has a mass of 5.7 and is 1.9 thick. how far above the tabletop is the center of gravity of the stack
q1. a sling-thrower puts a stone 0.250 kg in the slings pouch 0.010 kg and then begins to make the stone and pouch move
You're driving down the highway late one night at 18 - {rm m}/{rm s} when a deer steps onto the road 45 -{rm m} in front of you. Your reaction time before stepping on the brakes is 0.50- {rm s}, and the maximum deceleration of your car is 11 {rm m..
A dockworker applies a constant horizontal force of 85.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
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