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
sergejj [24]
3 years ago
5

Sound waves must have intensity if a person is to hear them. a. True b. False

Physics
2 answers:
BlackZzzverrR [31]3 years ago
7 0
The answer is  
A, True            

Nady [450]3 years ago
6 0

Answer:

a. True

Explanation:

Intensity is what we commonly call Volume, sound waves with no intensity or volume wouldn´t be hearable by humans, so the statement would be True, Sound waves must have intensity if a person is to hear them. The most usual unit to measure sound intencity is Decibels, and  a person with good ears can hear up to -15 dB.

You might be interested in
A student takes the elevator up to the fourth floor to see her favorite physics instructor. She stands on the floor of the eleva
never [62]

Answer:

N = 1364 N

Explanation:

given data

accelerate upward = 5.70 m/s²

mass = 88.0 kg

solution

normal force is in upward direction so, weight of the student in downward direction and acceleration is in upward direction so formula is express as

N - mg = ma        ...........................1

N = m × (g+a)

put here value

N = 88.0 × (9.8 + 5.70)

N = 1364 N

8 0
2 years ago
You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at a
Masteriza [31]

Answer:

Explanation:

Speed = distance / time

Given speed = 127 m/s .

distance = 1.58 m

time = ?

Putting the values in the formula

127 m/s = 1.58 m / time

time = 1.58 / 127 s

= 12.44 ms .

8 0
3 years ago
A space station that does not rotate cannot simulate gravity for its occupants.
il63 [147K]

false

true

false

false

true

4 0
3 years ago
What two gases in the atmosphere do animals and plants need to breathe and grow?
kenny6666 [7]

Answer: Explanation:

Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.

7 0
3 years ago
Read 2 more answers
How much does the earth weigh
tatiyna

Answer:

5.972 × 10^24 kg

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • A student throws a rock horizontally from the edge of a cliff that is 20 m high. The rock has an initial speed on 10 m/s. If air
    8·1 answer
  • What is your basal metabolism
    7·1 answer
  • Even if it is wrong, why is a hypothesis important?
    11·1 answer
  • Which statement best explains the relationship between current, voltage, and resistance?
    15·1 answer
  • Describe how a distance time graph shows an object that is stationary
    10·2 answers
  • A crescent moon appears when
    15·1 answer
  • What are some forms of mechanical energy
    15·1 answer
  • An athlete whose mass is 97.0 kg kg is performing weight-lifting exercises. Starting from the rest position, he lifts, with cons
    14·1 answer
  • From mechanics, you may recall that when the acceleration of an object is proportional to its coordinate, d2xdt2=−kmx=−ω2x , suc
    10·1 answer
  • Material speed of light
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!