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

Author Question: Light from a laser forms a 1.31-mm diameter spot on a wall. If the light intensity in the spot is ... (Read 64 times)

yoooooman

  • Hero Member
  • *****
  • Posts: 557
on: Oct 11, 2019

Question 1

What are the wavelength (in meters) and frequency (in hertz) of a wave whose displacement is given by the equation y = 0.5 sin(0.20x + 120t), where x and y are in meters and t is in seconds?
◦ 10 m, 0.50 Hz
◦ 31 m, 19 Hz
◦ 19 m, 120 Hz
◦ 5.0 m, 10 Hz
◦ 0.20 m, 120 Hz

Question 2

Light from a laser forms a 1.31-mm diameter spot on a wall. If the light intensity in the spot is what is the power output of the laser? Assume that all the light emitted by the laser hits the spot.
◦ 13.2 mW
◦ 21.3 mW
◦ 17.9 mW
◦ 24.7 mW
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by yoooooman on Oct 11, 2019

recede

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Oct 11, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 44% of students answer this correctly


yoooooman

  • Hero Member
  • *****
  • Posts: 557
Reply #2 on: Oct 11, 2019
Excellent


recede

  • Sr. Member
  • ****
  • Posts: 315
Reply #3 on: Oct 11, 2019
Great! Please up vote :D


« previous next »
 

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Light palpation of abdomen Light palpation of abdomen
A Test for the Blind Spot A Test for the Blind Spot
The connector is unplugged from the injector and a noid light is plugged into the injector ... The connector is unplugged from the injector and a noid light is plugged into the injector ...
Saffir-Simpson Scale (Hurricane Intensity Scale) Saffir-Simpson Scale (Hurricane Intensity Scale)
Common Root Words and Combining Forms Cont. Common Root Words and Combining Forms Cont.
A helical array of and tubulin forms a microtubule A helical array of and tubulin forms a microtubule
Video: Polymerase chain reaction PCR - Animation

For a complete list of videos, visit our video library