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An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. If each particle is moving at a speed of 0.35c relative to the laboratory before the collision, determine the energy of the electromagnetic radiation.
Consider a system in equilibrium with a heat bath at temperature T and a particle reservoir at chemical potential ?. Determine the (grand) partition function of the system
assume that the mass moves in a circle at constant speed, and that the string makes an angle theta = 20° with the vertical. How long does it take the mass to create one complete revolution.
What is the approximate mass of an object whose weight equals the force in part (b).
A point source of light is submerged 2.2 m below the surface of a lake and emits rays in all directions. What is the maximum radius that this circle could have
How would you determine the density of an irregularly shaped rock, Is buoyant force a conservative force
what did faraday and henry discover happened when a magnet was moved in a coil of wire? a a magnetic current will be
A hydrogen atom at rest in the laboratory emits the Paschen ? radiation. Compute the recoil kinetic energy of the atom
It takes a student t = 7.6 s to push a block m = 11 kg at a constant velocity over a distance of d = 8.2 m. Write an expression for the energy required to move the block along this path in terms of the variables provided
A charge of -2.655uC is located at (2.660m , 4.621m ), and a charge of 1.495uC is located at (-2.574m , 0). Find the electric potential at the origin
A rock is dropped from a high tower and falls freely under the influence of gravity. Which one of the following statements concerning the rock as it falls is true? Neglect the effects of air resistance.
A block is at rest on a plank whose angle can be varied. The angle is gradually increased from 0 deg. find the kinetic coefficent of friction between the block and the plank
How long does it take mass to make one complete revolution.
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