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A glass marble is dropped down an elevator shaft and hits a thick glass plate on top of an elevator that is descending at a speed of 2.60 m/s. The marble hits the glass plate 6.0 m below the point from which it was dropped. If the collision is elastic, how high will the marble rise, relative to the point from which it was dropped?
The availability and even dependence
a heat engine takes in 1000J of energy from a hot reservoir and expels 750J of energy to the cold reservoir in each cycle find the efficiency of the heat engine
In the 1994 movie Speed, a bus wired with explosives must maintain a speed of 50mph or the bus will explode. what is the minimum launch angle required for the jump to be successful
During a rockslide, a 760 kg rockslides from rest down a hillside that is 500 m long and 300 m high. How much energy is transferred to thermal energy
A horizontal wire of length 0.53 m, carrying a current of 7.5 A, isplaced in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force. When the wire istilted upward at an angle of 19 degrees, it experiences a m..
You have a 77.7-cm-long copper rod with a rectangular cross section of dimensions 5.75 cm by 8.13 cm. Find the heat current through the rod
The components of the electric field in an electromagnetic wave traveling in vacuum are described by Ex = 0, Ey = 0, and Ez = 5.68 sin(8.74x - ?t) V/m, Calculate the amplitude of the magnetic field of the wave
The drawing shows two situations in which charges are placed on the x and y axes. find the magnitude of the net electric field at the origin
What was the change in the potential energy of this charge?
A 2.46×10^4 rocket blasts off vertically from the earth's surface with a constant acceleration. Throughout the motion considered in the problem, suppose that remains constant. Inside the rocket, a 15.10 instrument hangs from a wire that can support a..
a calculate the electrons de brogile wavelength when its kinetic energy is 25ev.b if you require the wavelength of
When the block just touches the spring, how much gravitational potential energy has it lost? Give your answer as a positive number. After the mass has fully compressed the spring, what is its total loss of gravitational potential energy? Give your an..
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