subject

Physics, 27.07.2019 00:10 maves8

Afree electron with initial energy of 9 ev encounters a rectangular potential step of energy 12 ev and width of 0.4 nm. what is the probability that the electron will tunnel the barrier ?

ansver

Answers: 2

Show answers

Another question on Physics

question

Physics, 21.06.2019 17:30

What produces light and all other electromagnetic waves? a) the photoelectric phenomena b) heated metals c) charged particles d) radioactive samples (pls explain if you can : )

Answers: 1

question

Physics, 21.06.2019 19:00

When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.

Answers: 3

question

Physics, 22.06.2019 04:30

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.

Answers: 3

question

Physics, 22.06.2019 10:00

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.

Answers: 3

You know the right answer?

Afree electron with initial energy of 9 ev encounters a rectangular potential step of energy 12 ev a...

Questions

question

Mathematics, 10.09.2019 22:30

Ineed ! a conference room is in the shape of a rectangle. its floor has a length of (x − 4) meters and a width of (3x − 1) meters. the expression bel...

question

Business, 10.09.2019 22:30

Ustries is calculating its cost of goods manufactured at year-end. frasier's accounting records show the following: $15,000 the raw materials invento...

question

Business, 10.09.2019 22:30

Industries is calculating its cost of goods manufactured at year-end. lawrence's accounting records show the following: the raw materials inventory a...

question

Business, 10.09.2019 22:30

On january 1, 2018, jacob inc. purchased a commercial truck for $48,000 and uses the straight-line depreciation method. the truck has a useful life of...

question

Social Studies, 10.09.2019 22:30

Which of the following do anthropologists believe to be true? a. few, if any, isolated groups have existed in human history. b. undiscovered human gr...

question

Chemistry, 10.09.2019 22:30

Match the items. the task is to match the lettered items with the correct numbered items. appearing below is a list of lettered items. following that...

question

Business, 10.09.2019 22:30

Determine which economic principle is illustrated by each scenario. the owner of a snow cone trailer realizes that the demand for snow cones is low du...

question

Business, 10.09.2019 22:30

Linda butler is the new division controller of the snack-foods division of daniel foods. daniel foods has reported a minimum 15% growth in annual earn...

question

Business, 10.09.2019 22:30

Furnco manufactures desks and chairs. each desk uses 4 units of wood, and each chair uses 3. a desk contributes $40 to profit, and a chair contributes...

question

Business, 10.09.2019 22:30

Budget actual direct labor hours 7,400 hours 6,400 hours machine hours 6,600 hours

question

Business, 10.09.2019 22:30

Acompany that makes shopping carts for supermarkets and other stores recently purchased some new equipment that reduces the labor content of the jobs...

question

Chemistry, 10.09.2019 22:30

Select the statement that best describes a buffer. view available hint(s) select the statement that best describes a buffer. a buffer prevents the ph...

question

Business, 10.09.2019 22:30

The following information is from the income statement of the swifty laundry service: revenues service revenues $4940 expenses

question

Business, 10.09.2019 22:30

The following account balances were drawn from the financial records of kent company (kc) as of january 1, 2018: assets, $35,000; liabilities, $6,00...

question

Business, 10.09.2019 22:30

Nelectric utility is considering a new power plant in northern arizona. power from the plant would be sold in the phoenix area, where it is badly need...

question

Business, 10.09.2019 22:30

Aradio talk show host asked listeners to respond either yes or no to the question, "is the candidate who spends the most on a campaign the most likely...

question

Business, 10.09.2019 22:30

Boilermaker unlimited specializes in building new homes and remodeling existing homes. remodeling projects include adding game rooms, changing kitchen...

question

Mathematics, 10.09.2019 22:30

An array s[..] stores n distinct numbers such that the first k numbers are smaller than x and the other numbers are larger than x (x a real number). s...

question

Mathematics, 10.09.2019 22:30

Heart failures are due to either natural occurrences (87%) or outside factors (13%). outside factors are related to induced substances (73%) or foreig...

question

English, 10.09.2019 22:30

What is the best visual aid to show a reader how to build the tornado? (a) a photograph showing how the tornado will work (b) a photograph and descri...

More questions: Physics Another questions