Author Question: When the bottom string is pulled slowly in the heavy-ball-and-strings demonstration (Figure 1.7 in ... (Read 31 times)

Destiiny22

  • Hero Member
  • *****
  • Posts: 557
When the bottom string is pulled slowly in the heavy-ball-and-strings demonstration (Figure 1.7 in your text), tension
 
  A) in the top string is due to your pull plus the weight of the ball.
  B) is about the same in both strings.
  C) in the bottom string is zero.
  D) none of the above

Question 2

Light of wavelength 500 nm illuminates a soap film ( n = 1.33 ). What is the minimum thickness of film that will give an interference when the light is incident normally on it?
 
  A) 24 nm
  B) 56 nm
  C) 94 nm
  D) 188 nm
  E) 376 nm



meryzewe

  • Sr. Member
  • ****
  • Posts: 346
Answer to Question 1

Answer: A

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

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?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

For a complete list of videos, visit our video library