« previous next »

Author Question: Sound vibrations with frequencies greater than 20,000 Hz are called A) infrasonics. B) ... (Read 30 times)

Chelseaamend

  • Hero Member
  • *****
  • Posts: 545
on: Jul 27, 2018
Sound vibrations with frequencies greater than 20,000 Hz are called
 
  A) infrasonics.
  B) ultrasonics.
  C) supersonics.
  D) megasonics.
  E) infrared.

Question 2

What is the simplest way we might detect life on an extrasolar planet?
 
  A) listen for radio signals coming from an advanced civilization on the planet
  B) wait for aliens from the planet to visit us
  C) analyze the spectrum of reflected light from the planet
  D) send an interstellar probe to the planetary system


yasmin

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

From high cotransduction frequencies, close linkage is inferred From high cotransduction frequencies, close linkage is inferred
Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
Arthroscopic surgery. In this illustration, the knee joint is undergoing surgery with a specialized Arthroscopic surgery. In this illustration, the knee joint is undergoing surgery with a specialized
Responses to Sound Waves Responses to Sound Waves
In this painting evangelist George Whitefield appears to be cross-eyed. This is no fault of John Wol In this painting evangelist George Whitefield appears to be cross-eyed. This is no fault of John Wol
Cutaway Drawing of Tholos, The So-called Treasury of Atreus Cutaway Drawing of Tholos, The So-called Treasury of Atreus
Video: Transcription - Introns and exons

For a complete list of videos, visit our video library