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 136 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?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

This is a still image from an animation of ocean surface currents from June 2005 to December 2007 This is a still image from an animation of ocean surface currents from June 2005 to December 2007
Taken by Hinode's Solar Optical Telescope on January 12, 2007, this image of the Sun reveals th Taken by Hinode's Solar Optical Telescope on January 12, 2007, this image of the Sun reveals th
Front view of the cranium and facial bones. Front view of the cranium and facial bones.
Image Image
A certain car traveling at 34.0 mph skids to a stop in 29 meters from the point where the ... A certain car traveling at 34.0 mph skids to a stop in 29 meters from the point where the ...
Answer the image Answer the image
Video: What are Taste Receptors? How Does it Work? Animation

For a complete list of videos, visit our video library