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

Author Question: The energy gap for germanium is 0.670 eV at room temperature. What wavelength must a photon have (in ... (Read 61 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Jul 28, 2018
The energy gap for germanium is 0.670 eV at room temperature. What wavelength must a photon have (in nm) to excite the electron to the conduction band?
 a. 640
  b. 1 090
  c. 1 850
  d. 2 200
  e. 925

Question 2

During one year, what is the apparent change in the noonday Sun's overhead latitude?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fromAlphatoOmega22

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

47


mpobi80

  • Member
  • Posts: 519
Reply 2 on: Jul 28, 2018
Excellent

bulacsom

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

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?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Advantages and disadvantages of select temperature measurement sites Advantages and disadvantages of select temperature measurement sites
Temperature influences air pressure. Temperature influences air pressure.
Ancient drawing of energy channels and acupoints. Ancient drawing of energy channels and acupoints.
Reaction 6: Generation of the First Energy-Rich Compound Reaction 6: Generation of the First Energy-Rich Compound
Energy imbalance establishes a temperature gradient between the tropics and the poles Energy imbalance establishes a temperature gradient between the tropics and the poles
photon photon
Video: What are the Parts of a Plant Cell?

For a complete list of videos, visit our video library