This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An electron is confined in a one-dimensional box (an infinite well). Two adjacent allowed energies ... (Read 72 times)

olgavictoria

  • Hero Member
  • *****
  • Posts: 528
on: Jul 29, 2018
An electron is confined in a one-dimensional box (an infinite well). Two adjacent allowed energies of the electron are 1.068  10-18 J and 1.352  10-18 J. What is the length of the box? (h = 6.626  10-34 J  s, mel = 9.11  10-31 kg)
 
  A) 0.93 nm B) 1.1 nm C) 2.3 nm D) 1.9 nm

Question 2

A certain heat engine extracts 1.30 kJ of heat from a hot temperature reservoir and discharges 0.70 kJ of heat to a cold temperature reservoir. What is the efficiency of this engine?
 
  A) 54 B) 86 C) 46 D) 13 E) 27


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

asware1

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

C


olgavictoria

  • Member
  • Posts: 528
Reply 2 on: Jul 29, 2018
Gracias!

Dinolord

  • Member
  • Posts: 313
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Scorpions, Spiders and Sharks: Electron-Microscope Images Scorpions, Spiders and Sharks: Electron-Microscope Images
Urinary catheterization. The procedure involves the insertion of a flexible tube, or catheter, throu Urinary catheterization. The procedure involves the insertion of a flexible tube, or catheter, throu
Colored scanning electron micrograph (SEM) of a helper T cell (green) with HIV viruses (red) budding ... Colored scanning electron micrograph (SEM) of a helper T cell (green) with HIV viruses (red) budding ...
Respiratory electron carriers in the mitochondrion Respiratory electron carriers in the mitochondrion
The net price of an article is $79.84. What is the list price if a discount of 23% was allowed? The net price of an article is $79.84. What is the list price if a discount of 23% was allowed?
Opener Colored scanning electron micrograph of two prostate cancer cells in the final stages of cell Opener Colored scanning electron micrograph of two prostate cancer cells in the final stages of cell
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library