« previous next »

Author Question: Sound vibrations with frequencies greater than 20,000 Hz are called A) infrasonics. B) ... (Read 34 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?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

For linked genes, recombinant frequencies are less than 50 percent For linked genes, recombinant frequencies are less than 50 percent
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
The Whole Is Greater than the Sum of its Parts The Whole Is Greater than the Sum of its Parts
Socrates (470–399 B.C.E.) was an Ancient Greek philosopher often called the "father of ... Socrates (470–399 B.C.E.) was an Ancient Greek philosopher often called the "father of ...
Craig David, MNEK - Who You Are (Preditah Remix) That Garage Sound 129 (New UKG) Craig David, MNEK - Who You Are (Preditah Remix) That Garage Sound 129 (New UKG)
Greater Long-nosed Tree Shrew (Tupaia tana), Borneo and Sumatra. Greater Long-nosed Tree Shrew (Tupaia tana), Borneo and Sumatra.
Video: The Hypothalamus: The Body's Thermostat (Human Thermostat)

For a complete list of videos, visit our video library