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 71 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
Great answer, keep it coming :)

mcabuhat

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

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?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Solar Energy Input Varies with Latitude Solar Energy Input Varies with Latitude
Energy in SHM Energy in SHM
Integumentary regulation of body temperature. Integumentary regulation of body temperature.
Homeostasis is analogous to regulation of temperature via a thermostat. Homeostasis is analogous to regulation of temperature via a thermostat.
Solar energy heats the atmosphere, creates seasons, and causes air to circulate Solar energy heats the atmosphere, creates seasons, and causes air to circulate
Daily Variations in Temperature and Relative Humidity Daily Variations in Temperature and Relative Humidity
Video: Genetics of Cancer

For a complete list of videos, visit our video library