Author Question: A thin beam of light of wavelength 625 nm goes through a thin slit and falls on a screen 3.00 m past ... (Read 58 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560
A thin beam of light of wavelength 625 nm goes through a thin slit and falls on a screen 3.00 m past the slit.
 
  You observe that the first completely dark fringes occur on the screen at distances of 8.24 mm from the central bright fringe, and that the central bright fringe has an intensity of 2.00 W/m2 at its center.
  (a) How wide is the slit?
  (b) What is the intensity of light at a point on the screen that is one-quarter of the way from the central bright fringe to the first dark fringe?

Question 2

A 50.0-g sample of a material at 80.0C is dropped into a calorimeter containing 100.0 g of water at 20.0C. When the mixture reaches thermal equilibrium, it is at a temperature 24.0C.
 
  If heat transfer to the walls of the calorimeter is negligible, what is the specific heat of the material?
  A)
 
  0.143 cal/(gC)
  B)
 
  0.322 cal/(gC)
  C)
 
  0.221 cal/(gC)
  D)
 
  0.437 cal/(gC)
  E)
 
  0.0714 cal/(gC)



choc0chan

  • Sr. Member
  • ****
  • Posts: 362
Answer to Question 1

(a) 0.228 mm (b) 1.62 W/m2

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

For a complete list of videos, visit our video library