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

Author Question: An electron has the same de Broglie wavelength as a 1.8 eV photon. The speed of the electron is ... (Read 86 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
on: Jul 29, 2018
An electron has the same de Broglie wavelength as a 1.8 eV photon. The speed of the electron is closest to:
 
  A) 1,100 m/s
  B) 980 m/s
  C) 910 m/s
  D) 840 m/s
  E) 770 m/s

Question 2

A Carnot engine operates between reservoirs at 550K and 300K, discarding 1500 J of heat in each cycle.
  (a) What is the engine's efficiency?
  (b) How much heat is supplied to the engine by the hot reservoir in each cycle?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fauacakatahaias

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

(a) 45.5 (b) 2750 J


TFauchery

  • Hero Member
  • *****
  • Posts: 500
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


fauacakatahaias

  • Sr. Member
  • ****
  • Posts: 353
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Electron Microscope Images of a Diatom Electron Microscope Images of a Diatom
Speed of Earth Speed of Earth
A Scanning Electron Micrograph of the Choroid Plexus A Scanning Electron Micrograph of the Choroid Plexus
Respiratory electron carriers in the mitochondrion Respiratory electron carriers in the mitochondrion
The human X chromosome (left) and the Y chromosome (right). This false-color scanning electron micro The human X chromosome (left) and the Y chromosome (right). This false-color scanning electron micro
An electron micrograph of a eukaryotic replicating fork demonstrating An electron micrograph of a eukaryotic replicating fork demonstrating
Video: Nerve Impulse Transmission Animation

For a complete list of videos, visit our video library