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A certain semiconductor device requires a tunneling probability of T=10^-5 for an electron tunneling through a rectangular barrier with a barrier height of Vo=0.4eV. The electron energy is 0.04eV. Determine the maximum barrier width?
A box weighing 300N is shoved across the floor of an apartment by a force of 400 N exerted downward at an angle of 35.2° below the horizontal. If the coefficient of kinetic friction between the box and the floor is 0.540, how long does it take to mov..
q1. a 1000 kg car travelling at a speed of 20 ms skids to a halt on wet concrete where fk 0.50. how long is the cars
In a RLC circuit, the rms current is 7.00 A, the maximum voltage 230. V and the current lags behind the voltage by 53.0 degrees. Find the average power dissipated in the circuit
A bix of mass 90 kg is sitting on the floor. The tension in the rope is 56.0N, Calculate the accleration on the box
q1. a wave on a slinky has a frequency of 1.69 hz. it takes 4.1 s to travel the length of the slinky 0.29 m. what is
Find an equation for the change in wavelength of a scattered photon by Compton effect.
a student with a mass of 80.0 kg runs up three flights of stairs in 12 s. the student has gone a vertical distance of 8.0 m. what is the student's power
A simple harmonic oscillator takes 12.0 s to undergo six complete vibrations.
Ship A is located 4.0 km north and 2.5 km east of ship B. Ship A has a velocity of 22 km/h toward the south, what is the least separation
A puck of mass m = 1.20 kg slides in a circle of radius r = 18.0 cm on a frictionless table while attached to a hanging cylinder of mass M = 2.80 kg by a cord through a hole in the table
The spring of the pressure gauge shown in has a force constant of 1 400N/m, and the piston has a diameter of 1.60cm. When the gauge is lowered into water in a lake, what change in depth causes piston to move in by 0.850cm.
A proton is passing the origin. The magnetic field at the (x,y,z) position ( 1mm , 0 mm, 0 mm)is 1.0×10?13?^T. what is the direction of the proton
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