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A particle with 7eV of kinetic energy moves from a region of zero potential into region of constant potential of U=5.25 eV. In classical approach one would expect the particle to continue on with less kinetic energy. In quantum mechanics the particle has probabilities of being transmitted and as well as being reflected. Calculate these probabilities.
At a position in the Philippines, Earth's magnetic field of39 µT is horizontal and directeddue north. What is the magnitude and direction of the current
A particle with a rest mass of M=135GeV/c^2 or 1.35x10^11 eV/c^2 decays into two particles (which emerge back-to-back). The speeds of the two particles are measured at v1=.9c and v2=.01c. What are the masses of the two particles?
A velocity selector has an electric field of magnitude 2500 N/C,directed vertically upward, and a horizontal magnetic field that is directed south. Charged particles, traveling east at a speed of7.27 x 103 m/s, enter the velocity selector and are ..
An object of mass 2.00 kg is held at a position A, a vertical height of 20.0 m above the ground. Point B is 8.00 m directly below A. Neglect air resistance and use g = 10.0 m/s.
You have a string with a mass of 0.0131 kg. You stretch the string with a force of 9.31 N, giving it a length of 1.89 m, What is the wavelength of the standing wave you create in the string
Suppose one gallon of gasoline produces 1.1 x 108 J of energy, and this energy is sufficient to operate a car for twenty miles. how many miles could the car go with that energy
Suppose 0.380 kg of water initially at 45.0°C is poured into a 0.300 kg glass beaker having a temperature of 25.0°C. Calculate the final equilibrium temperature of the system
A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. Find the acceleration of the cart
a spring is hanging down from the ceiling and an object of mass m is attached to the free end. the object is pulled
An aluminum-alloy rod has a length of 10.007 cm at 16.600 °C and a length of 10.023 cm at the boiling point of water. find the length of the rod at the freezing point of water
find the position and velocity of a particle at t 2.02 s if the particle is initially moving east at a speed of 21.6
You want to support a sheet of fireproof paper horizontally using only a vertical upward beam of light spread uniformly over the sheet. There is no other light on this paper. The sheet measures 22.0cm by 28.0 cm and has a mass of 1.50g.
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