« previous next »

Author Question: An electron in a TV picture tube is accelerated through a potential difference of 20 kV before it ... (Read 34 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?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Emiliania huxleyi cells in an electro-microscopic picture. Emiliania huxleyi cells in an electro-microscopic picture.
This wheel presentation is helpful for the detection of potential amphipathic helices This wheel presentation is helpful for the detection of potential amphipathic helices
Electron Microscope Images of a Diatom Electron Microscope Images of a Diatom
A needle that drops to near zero when the engine is accelerated rapidly and then rises slightly to ... A needle that drops to near zero when the engine is accelerated rapidly and then rises slightly to ...
Small local hydroelectric power generators have more future potential Small local hydroelectric power generators have more future potential
An Event-Related Potential An Event-Related Potential
Video: Splitting of Sugar, Oxidation/ Reduction & ATP Generation

For a complete list of videos, visit our video library