Consider an electron initially moving in the positive x-direction along the negative x-axis with an energy...

Consider an electron initially moving in the positive x-direction along the negative x-axis with an energy E. At the origin the electron encounters a square barrier; the potential energy U (x) changes abruptly, from ? U(x)=0? for x<0, to U ( x) 1.0eV for 0<x<a. to U(x)=0 for x>a, where the barrier width a=1 nm . Graph the transmittance as a function of energy, for the range 0 <E<5eV . For what values of energy is there a transmission resonance?

Solutions

Expert Solution

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

A positive charge is moving along the x-axis in the positive direction. What is the direction...

A positive charge is moving along the x-axis in the positive direction. What is the direction of the magnetic field on the y-axis? A long straight wire lies along the y-axis carrying current in the positive y direction.What is the direction of the magnetic field at x = 3m, y = 3 m? What is the direction of the magnetic field at x = -3m, y = 3 m? A wire extends from x = - ∞ to x = 0...

An electron moving in the positive y direction at right angles to a magnetic field, experiences a magnetic force in the negative x direction.

An electron moving in the positive y direction at right angles to a magnetic field, experiences a magnetic force in the negative x direction. what is the direction of the magnetic field?a) it is in the negative z directionb) it is in the postive y directionc)it is in the positive z directiond) it is in the negative x directione) it is in the postive x direction

A 44.0 kg body is moving in the direction of the positive x-axis with a speed...

A 44.0 kg body is moving in the direction of the positive x-axis with a speed of 373 m/s when owing to an internal explosion, it breaks into three pieces. One part, whose mass is 6.5kg, moves away from the point of explosion with a speed of 438 m/s along the positive y-axis. A second fragment, whose mass is 5.0 kg, moves away from the point of explosion with a speed of 378 m/s along the negative x-axis. What is...

1. An electron, initially moving in the +x-direction enters a uniform magnetic field in the +y-direction....

1. An electron, initially moving in the +x-direction enters a uniform magnetic field in the +y-direction. What is the direction of the initial magnetic force on the electron? None of the choices is correct. between +x and +y-directions +z-direction between +x and –y-directions –z-direction 2. A small light source radiates light uniformly in all directions at a rate of 10 W. What is the light intensity at a distance of 2 m from the source? 0.4 W/m2 0.8 W/m2 0.2...

A particle moves along the x axis. It is initially at the position 0.250 m, moving...

A particle moves along the x axis. It is initially at the position 0.250 m, moving with velocity 0.070 m/s and acceleration -0.250 m/s2. Suppose it moves with constant acceleration for 3.90 s. Assume it moves with simple harmonic motion for 3.90 s and x = 0 is its equilibrium position. (a) Find its position. (b) Find its velocity at the end of this time interval.

A particle moves along the x axis. It is initially at the position 0.200 m, moving...

A particle moves along the x axis. It is initially at the position 0.200 m, moving with velocity 0.140 m/s and acceleration -0.410 m/s2. Suppose it moves with constant acceleration for 5.50 s. We take the same particle and give it the same initial conditions as before. Instead of having a constant acceleration, it oscillates in simple harmonic motion for 5.50 s around the equilibrium position x = 0. Hint: the following problems are very sensitive to rounding, and you...

ll B, moving in the positive direction of an x axis at speed v, collides with...

ll B, moving in the positive direction of an x axis at speed v, collides with stationary ball A at the origin. A and B have different masses. After the collision, B moves in the negative direction of the y axis at speed v/3. In what direction does A move, as an angle with respect to the x axis?

1). A car is moving along a straight line defined to be the positive x direction....

1). A car is moving along a straight line defined to be the positive x direction. Its velocity is measured and found to be a function of time given by Vx(t)=(alpha)t^2 , where alpha is a known constant. The car was at the point x = A at the time t = 2sec. Find the car's position as a function of time. How fast would the car be going just before it hits a wall located at x = L?...

A wave travels along a tight rope in the positive direction of the x-axis. Its wavelength...

A wave travels along a tight rope in the positive direction of the x-axis. Its wavelength is 40 cm and its velocity of propagation along the rope is 80 m/s. The amplitude of the wave is 0.60 cm. In t = 0 the point of the string at x = 0 is at the point of maximum oscillation amplitude, y = +A. a)Write the wave equation in the sine form [y = A sin(kx ± ωt + φ) ], identifying...

An object with mass m1= 3.00 kg is moving along the positive x-axis with a speed...

An object with mass m1= 3.00 kg is moving along the positive x-axis with a speed v1i=2 m/s straight towards two objects with masses m2= 2.00 kg and m3= 4.00 kg, which are initially at rest. When they collide, object 1 comes to rest and object 2 moves away with a speed of v2f=1.5 m/s at an angle of 50o from the incoming path of object 1. For everything that follows, use a coordinate system where the final path of...

Subjects