Question

An electron beam with energy 0.1 eV is incident on a potential barrier with energy 10...

An electron beam with energy 0.1 eV is incident on a potential barrier with energy 10 eV and width 20 ˚A. Choose the variant that you think best describes the probability of finding an electron on the other side of the barrier: a) 0; b) <10%; c) 100% d) 200%.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An electron with an energy of 5.5 eV approaches a potential barrier of height 6.1 eV...
An electron with an energy of 5.5 eV approaches a potential barrier of height 6.1 eV and thickness of 1nm. What is the relative probability that the electron passes through the barrier? What barrier height should be used to decrease the relative probability by a factor of 100?
An electron having total energy E = 3.40 eV approaches a rectangular energy barrier with U...
An electron having total energy E = 3.40 eV approaches a rectangular energy barrier with U = 4.10 eV and L = 950 pm as shown in the figure below. Classically, the electron cannot pass through the barrier because E < U. Quantum-mechanically, however, the probability of tunneling is not zero. (a) Calculate this probability, which is the transmission coefficient. (Use 9.11  10-31 kg for the mass of an electron, 1.055  10-34 J · s for ℏ, and note that there are...
A beam of 1,000,000 electrons, each with kinetic energy E = 1.0 eV, is incident on...
A beam of 1,000,000 electrons, each with kinetic energy E = 1.0 eV, is incident on a potential barrier with the height V0 = 7.0 eV. (a) How many electrons in the beam will be transmitted through the barrier if the barrier width a = 0.25 nm? (b) Answer the same question if the width is doubled, that is, a = 0.5 nm. (c) Briefly explain the effect of the barrier width in quantum tunneling, based on your results in...
A beam of electrons with kinetic energy 25 eV encounter a potential barrier of height 20...
A beam of electrons with kinetic energy 25 eV encounter a potential barrier of height 20 eV. Some electrons reflect from the barrier, and some are transmitted. Find the wave number k of the transmitted electrons. You can take U = 0 for x < 0, and U = 15 eV for x > 0
Suppose a beam of 4.00 eV protons strikes a potential energy barrier of height 6.20 eV...
Suppose a beam of 4.00 eV protons strikes a potential energy barrier of height 6.20 eV and thickness 0.560 nm, at a rate equivalent to a current of 1150 A. (a) How many years would you have to wait (on average) for one proton to be transmitted through the barrier? (b) How long would you have to wait if the beam consisted of electrons rather than protons?
Suppose a beam of 5.10 eV protons strikes a potential energy barrier of height 5.80 eV...
Suppose a beam of 5.10 eV protons strikes a potential energy barrier of height 5.80 eV and thickness 0.810 nm, at a rate equivalent to a current of 980 A. (a) How many years would you have to wait (on average) for one proton to be transmitted through the barrier? (b) How long would you have to wait if the beam consisted of electrons rather than protons?
Suppose a beam of 4.60 eV protons strikes a potential energy barrier of height 6.10 eV...
Suppose a beam of 4.60 eV protons strikes a potential energy barrier of height 6.10 eV and thickness 0.530 nm, at a rate equivalent to a current of 1190 A. (a) How many years would you have to wait (on average) for one proton to be transmitted through the barrier? (b) How long would you have to wait if the beam consisted of electrons rather than protons?
Suppose a beam of 5.10 eV protons strikes a potential energy barrier of height 6.00 eV...
Suppose a beam of 5.10 eV protons strikes a potential energy barrier of height 6.00 eV and thickness 0.840 nm, at a rate equivalent to a current of 860 A. (a) How many years would you have to wait (on average) for one proton to be transmitted through the barrier? (b) How long would you have to wait if the beam consisted of electrons rather than protons?
A 1.4 eV electron has a 10-4 probability of tunneling through a 2.5 eV potential barrier....
A 1.4 eV electron has a 10-4 probability of tunneling through a 2.5 eV potential barrier. What is the probability of a 1.4 eV proton tunneling through the same barrier?
A 1.5 eV electron has a 10-4 probability of tunneling through a 2.0 eV potential barrier....
A 1.5 eV electron has a 10-4 probability of tunneling through a 2.0 eV potential barrier. What is the probability of a 1.5 eV proton tunneling through the same barrier?