« 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 48 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?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

This image shows growing blood vessels in the retina of a mouse This image shows growing blood vessels in the retina of a mouse
Color-enhanced magnetic resonance image (MRI) showing a sagittal view of the head. Color-enhanced magnetic resonance image (MRI) showing a sagittal view of the head.
Electron Microscope Image of a Fly Foot Electron Microscope Image of a Fly Foot
Tall Bellflower Tall Bellflower
Most vehicles will be correctly positioned when the left front tire is centered on the tire pad. Most vehicles will be correctly positioned when the left front tire is centered on the tire pad.
Video: Conduction of action potentials

For a complete list of videos, visit our video library