1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zysi [14]
3 years ago
10

Help with this 4 i mark u as brainlist if u answer them correctly 20 points

Biology
1 answer:
vodka [1.7K]3 years ago
3 0

Answer:

1. Decibels

2. whisper - 20-decibels, normal talking - 60 decibels, rock concert - 120 decibels

3. 10,000

4. A Jet plane

Explanation:

1. The unit refers to what specifically is being measured. If the graph was of heights, it could be metres, centimetres, feet, or inches, for example. In this case, the graph is of sound level. We can see beside the Y axis label "Sound Level" that the unit is decibels.

2. Take each individual sound source and look at how tall the bars are (purple rectangles). For each one, we can look across to the Y axis (left side) and see the corresponding sound level for each

3. We were told in the introduction to the question that for every 10 decibel increase, the sound increases by 10 times. So going from 10 -> 20 decibels represents a 10x increase, and 10-> 30 represents a 100x increase.  

To figure out the increase from whisper (20) to normal talking (60), take away 20 from 60 to see how many decibels difference there are between the two levels.

60-20 = 40

There is a 40 decibel increase. If 10 decibel difference = 10x and 20 decibel difference = 100x, then 30 = 1000x, and 40 = 10,000x (keep adding a 0 with every 10!)

4. We can see from the graph that the pain threshold is 120 decibels. The sound level that is greater than the pain threshold (meaning it would be painful) is the jet plane.

You might be interested in
How does lung volume control inspiration?
Nataly [62]
<span> A decrease in lung volume decreases the pressure within the lungs so air can flow inside. </span>
5 0
3 years ago
Read 2 more answers
You are a dietician. Your client wants to discuss an image he found online while trying to conduct his own research about health
Sever21 [200]

Answer:

....

Explanation:

heud

8 0
3 years ago
The magma that creates new sea floor comes from the
zhannawk [14.2K]
D mantle
The mantle swells up in response to the plate moving
8 0
3 years ago
Read 2 more answers
Measurement of physiological arousal in breathing rate, hear rate, and blood pressure (which can mark emotional response) is als
zysi [14]

Emotion is one of the responses of an organism (whole) which involves physiological arousal. Other than indicating emotion, physiological arousal or heightened physiological activity is modernly used in polygraphs. Polygraphs or lie detector notes changes in blood pressure, pulse, respiration while the subject is asked and answers questions. It is based on the assumption that dishonest answers are indicated with physiological arousal.

4 0
3 years ago
Read 2 more answers
What creates seasons ?
Ymorist [56]
Are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels around the sun
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the systematic study of natural <br> world?
    7·1 answer
  • Whats the reactant gas in the aerobic respiration equation?
    8·2 answers
  • Which statement represents a characteristic of an ecosystem that is not likely to sustain itself
    10·1 answer
  • Where are you most likely to find primary succession?
    13·2 answers
  • The major divisions of the peripheral nervous system are the ____.
    14·1 answer
  • Preoperational thinker Blake has edged his way close to the top rim of the Grand Canyon. His mother then asks him, "What do you
    7·1 answer
  • African lungfish, which are often found in small, stagnant pools of fresh water, produce urea as a nitrogenous waste. What is th
    12·1 answer
  • Which statement best describes the explanatory powers of hypotheses and theories? A hypothesis does not provide an explanation b
    13·2 answers
  • Running a mineral across a porcelain plate to see the color it leaves behind on the plate may be described as testing
    12·1 answer
  • PLZ TELL ME YOUR ANIME SHIPS
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!