« previous next »

Author Question: A cup that is 6.0 cm tall is in front of a concave lens. The image of the cup is 2.5 cm tall and 7.5 ... (Read 60 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 29, 2018
A cup that is 6.0 cm tall is in front of a concave lens. The image of the cup is 2.5 cm tall and 7.5 cm from the lens. What is the focal length of the lens?
 
  A) -6.0 cm
  B) -7.5 cm
  C) -13 cm
  D) +18 cm
  E) +6.0 cm

Question 2

An 84-kW AM radio station broadcasts at 1000 kHz. How many photons are emitted each second by the transmitting antenna? (h = 6.626  10-34 J  s)
 
  A) 1.3  
  B) 2.9  
  C) 6.3  
  D) 1.4
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Kimmy

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

washai

  • Hero Member
  • *****
  • Posts: 523
Reply #2 on: Jul 29, 2018
TY


Kimmy

  • Sr. Member
  • ****
  • Posts: 342
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

THEMIS image of probable Mars cave entrances THEMIS image of probable Mars cave entrances
CONCAVE SLIDE CONCAVE SLIDE
Brush off front to finish. Long brushing strokes from head to feet to finish. Brush off front to finish. Long brushing strokes from head to feet to finish.
Front Panel on Sound Box of the Great Lyre with Bull’s Head Front Panel on Sound Box of the Great Lyre with Bull’s Head
A colorized image of human chromosomes A colorized image of human chromosomes
Answer the image Answer the image
Video: Decubitus Ulcer

For a complete list of videos, visit our video library