« 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 136 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?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

3D image of a melanoma cell 3D image of a melanoma cell
Magnetic resonance imaging (MRI) image demonstrating a back herniated disk. Magnetic resonance imaging (MRI) image demonstrating a back herniated disk.
Mosaic image of the lunar south pole of the Moon Mosaic image of the lunar south pole of the Moon
Tall Meadow Rue Tall Meadow Rue
Functional brain imaging is the major method of cognitive neuroscience. This image—taken from the ... Functional brain imaging is the major method of cognitive neuroscience. This image—taken from the ...
Warm Front Warm Front
Video: Carbohydrate digestion (brush border enzymes, end products) & Carb absorption (fructose, galactose)

For a complete list of videos, visit our video library