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

Author Question: Glass panes are opaque to a certain type of radiation, which can cause sunburn. What type of ... (Read 43 times)

sc00by25

  • Hero Member
  • *****
  • Posts: 596
on: Jul 28, 2018
Glass panes are opaque to a certain type of radiation, which can cause sunburn. What type of radiation is it? This radiation is important in ozone layer reactions.
 a. gamma
  c. X-ray
  b. ultraviolet
  d. microwave

Question 2

You stand by the railroad tracks as a train passes by. You hear a 950-Hz frequency when the train approaches, which changes to 820 Hz as it goes away. How fast is the train moving? The speed of sound in air is 340 m/s.
 a. 14.0 m/s
  c. 25.0 m/s
  b. 20.0 m/s
  d. 37.8 m/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ErinKing

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


sc00by25

  • Member
  • Posts: 596
Reply 2 on: Jul 28, 2018
Excellent

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation.
Ionizing Radiation Ionizing Radiation
Gerotor-type oil pump driven by the crankshaft. Gerotor-type oil pump driven by the crankshaft.
Radiation Quantity and Quality Radiation Quantity and Quality
Radiation Radiation
Earth emits radiation back out to space from all surfaces, both day and night Earth emits radiation back out to space from all surfaces, both day and night
Video: The Pressure Flow Model in a Plant

For a complete list of videos, visit our video library