Author Question: An echo is a sound wave that has been a. diffracted b. refracted c. reflected d. reverberated ... (Read 164 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
An echo is a sound wave that has been
 a. diffracted
  b. refracted
  c. reflected
  d. reverberated
  e. amplified

Question 2

You see a lightning flash and half a second later hear a loud blast of thunder. How far away did the lightning hit?
 a. about a mile c. a tenth of a mile
  b. half a mile d. none of the above



meganlapinski

  • Sr. Member
  • ****
  • Posts: 333
Answer to Question 1

C

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

For a complete list of videos, visit our video library