« previous next »

Author Question: An electron in a TV picture tube is accelerated through a potential difference of 20 kV before it ... (Read 67 times)

Pineappleeh

  • Hero Member
  • *****
  • Posts: 585
on: Jul 28, 2018
An electron in a TV picture tube is accelerated through a potential difference of 20 kV before it hits the screen. What is the kinetic energy of the electron in electron volts? (1 eV = 1.6  10-19 J)
 a. 6.25  1022 eV
  c. 2.0  104 eV
  b. 1.0  104 eV
  d. 3.2  10-22 eV

Question 2

Consider a point on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor slowing down. Compare the linear and angular accelerations of the point.
 a. Both are zero.
  c. Only the linear acceleration is zero.
  b. Only the angular acceleration is zero.
  d. Neither is zero.


frankwu0507

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Weird Picture Weird Picture
Electron Microscope Electron Microscope
Marine Worm Under An Electron Microscope Marine Worm Under An Electron Microscope
Strawberry Image From a Scanning Electron Microscope Strawberry Image From a Scanning Electron Microscope
Potential gas reserves have increased significantly with the discovery of new shale gas formations Potential gas reserves have increased significantly with the discovery of new shale gas formations
Day 16 Neural groove appears as the neural tube begins forming. Day 16 Neural groove appears as the neural tube begins forming.
Video: B cells and antibodies

For a complete list of videos, visit our video library