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
m_a_m_a [10]
3 years ago
5

What is the pressure amplitude for the threshold of human hearing?

Physics
2 answers:
Hoochie [10]3 years ago
5 0
The pressure amplitude for the threshold of human hearing is"<span> RMS sound pressure of </span>20 micropascals, corresponding to a sound intensity of 0.98 pW/m2<span> at </span>1 atmosphere<span> and 25 °C"</span>
Korolek [52]3 years ago
4 0

The answer is B,

1.0 x 10^-12 watts/meter^2

Source: http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/intens.html

You might be interested in
You are tossing a ball directly up into the air. Before the ball leaves your hand, you are exerting a force directed against the
DaniilM [7]

Answer:

F n = 0.2 N

Explanation:

given,                                      

you are exerting force of 10 N on the ball.

mass of the ball = 1 kg              

acceleration due to gravity  = 9.8 m/s²

normal force on the ball = ?          

normal force is force exerted by the object to counteract the force from other object.                

normal force acting on the ball will be

F n = F - mg                          

F n = 10 - 1 × 9.8                        

F n = 10 -9.8                    

F n = 0.2 N            

Hence, normal force acting on the ball is equal to 0.2 N

7 0
3 years ago
______ energy is defined as the energy of motion.
MatroZZZ [7]
Kinetic energy is defined as the energy of motion. On the other hand, potential energy is the energy of non-motion.
Hope that helped =)
7 0
3 years ago
Read 2 more answers
A kettle is rated at 1 kW, 220 V. Calculate the working resistance of the kettle.
Anna [14]

Explanation:

Power of electric kettle, P = 1 kW

Voltage, V = 220 V

(a) Electric power is given by the formula as follows :

P=\dfrac{V^2}{R}

R is resistance

R=\dfrac{V^2}{P}\\\\R=\dfrac{(220)^2}{10^3}\\\\R=48.4\ \Omega

(b) When connected to a 220 V supply, it takes 3 minutes for the water in the kettle to reach boiling point.

Energy supplied is given by :

E=P\times t

P is power, P=\dfrac{V^2}{R}

E=\dfrac{V^2}{R}t\\\\E=\dfrac{(220)^2}{48.4}\times 180\\\\E=180000\ J\\\\E=180\ kJ

5 0
3 years ago
Which of the following is an example of speed?
Arturiano [62]
The cat has a speed. The truck and the bicycle both have velocity. We can't be sure of what the plane has.
6 0
3 years ago
Why do we use microwaves to communicate berween earth and satellites
nlexa [21]
It’s frequency is high and microwaves can pass through the atmosphere of the Earth.
7 0
3 years ago
Read 2 more answers
Other questions:
  • If Siobhan hits a 0.25 kg volleyball with 0.5 N of force, what is the acceleration of the ball?
    12·2 answers
  • What kind of energy change occurs when a battery is operating a remote control toy?
    7·1 answer
  • Visible light shining through a window is an example of _____.
    9·2 answers
  • The description for a certain brand of house paint claims a coverage of 475 ft²/gal.
    8·1 answer
  • What are possible units for impulse? Check all that apply.
    13·2 answers
  • How to access documents stored on cloud
    10·1 answer
  • If you increase the force on a box, it will have...
    10·1 answer
  • A pinball bangs against a bumper giving the ball a speed of 42cm/s if the ball has a mass of 50.0g what is the ball’s kinetic en
    10·1 answer
  • Plz help ASAP please !!
    11·1 answer
  • Once you start pulling your object with less force than friction, what should you expect your object to do? What about when your
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!