« previous next »

Author Question: An electron in a TV picture tube is accelerated through a potential difference of 20 kV before it ... (Read 25 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?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Electron transport chain Electron transport chain
Tracheal Tube Respiratory System as diagrammed in a generalized insect Tracheal Tube Respiratory System as diagrammed in a generalized insect
Refractory periods associated with an action potential. Refractory periods associated with an action potential.
An electron micrograph of a synapse between two nerve cells. An electron micrograph of a synapse between two nerve cells.
Electron micrograph of plasmids isolated from E. coli Electron micrograph of plasmids isolated from E. coli
Pollen Tube Growth Pollen Tube Growth
Video: Chronology of leptin research (A history of leptin research)

For a complete list of videos, visit our video library