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

Author Question: David stands 2.5 meters in front of a plane mirror. (a) How far from David is David's image in ... (Read 208 times)

Medesa

  • Hero Member
  • *****
  • Posts: 507
on: Jul 29, 2018
David stands 2.5 meters in front of a plane mirror.
 
  (a) How far from David is David's image in the mirror?
  (b) If David moves away from the mirror at 1.5 m/s, how fast are David and his image moving apart from each other?
  (c) If David is 180. cm tall, how tall is his image in the mirror?

Question 2

What is the momentum of a photon of light that has a frequency of 2.8  1014 Hz?
 
  A) 1.5  10-28 kgm/s
  B) 2.1  10-28 kgm/s
  C) 4.4  10-28 kgm/s
  D) 6.3  10-28 kgm/s
  E) 6.2  10-28 kgm/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leeeep

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 5.0 cm
(b) 3.0 m/s
(c) 180. cm

Answer to Question 2

E


Medesa

  • Hero Member
  • *****
  • Posts: 507
Reply #2 on: Jul 29, 2018
TY


leeeep

  • Sr. Member
  • ****
  • Posts: 315
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

Your heart beats over 36 million times a year.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Diffusion spectrum MR image of human brain Diffusion spectrum MR image of human brain
electron microscope image of a pyralidae moth electron microscope image of a pyralidae moth
Sagittal plane Sagittal plane
Rain seen from a plane Rain seen from a plane
Postage meters are used for large mailings. Postage meters are used for large mailings.
The xy plane is painted with a uniform surface charge density which is equal to 40 nC/m2 . ... The xy plane is painted with a uniform surface charge density which is equal to 40 nC/m2 . ...
Video: Electrical changes in the heart

For a complete list of videos, visit our video library