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 189 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?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

An electron micrograph from an experiment demonstrating the function of a tight junction An electron micrograph from an experiment demonstrating the function of a tight junction
Scanning electron micrograph of a nematode within a plant leaf. Scanning electron micrograph of a nematode within a plant leaf.
Electron Microscope Images of a Diatom Electron Microscope Images of a Diatom
Reductive electron transport sequences in the action of rNDP Reductase Reductive electron transport sequences in the action of rNDP Reductase
A photon whose wavelength is = 5.0 10-11 m is scattered straight backward. What is the ... A photon whose wavelength is = 5.0 10-11 m is scattered straight backward. What is the ...
A tsunami (tidal wave) traveling across deep water can have a speed of 750 km/h k m / h and a ... A tsunami (tidal wave) traveling across deep water can have a speed of 750 km/h k m / h and a ...
Video: Mendel's pea plant, Pisum sativum experimental

For a complete list of videos, visit our video library