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
masya89 [10]
3 years ago
13

What is the intensity level of a sound with an intensity of 0.000127 W/m2?

Physics
1 answer:
irina1246 [14]3 years ago
6 0
DB = 10 log (I/Io)
Where, Io is the reference intensity which is the minimum intensity that human can hear.
That is; Io = 10^-12
Therefore; 
dB = 10 log (0.000127/10^-12) =80.79
     = 81 dB
Therefore; the correct answer is 81 dB
You might be interested in
Identify the energy transformations in the following actions.
Artemon [7]
According to the Law of Conservation of Energy, energy is neither created nor destroyed. It is only transferred through different forms of energy. For the following situations, the conversion of energy is as follows:

*Turning on a space heater = electrical energy⇒heat energy
*Dropping an apple core into the garbage =  potential energy⇒kinetic energy
*Climbing up a rope ladder = kinetic energy⇒potential energy
*Starting a car = chemical energy⇒mechanical energy
<span>*Turning on a flashlight = chemical energy</span>⇒electrical energy
4 0
3 years ago
Read 2 more answers
Jason applies a force of 4.00 newtons to a sled at an angle 62.0 degrees from the ground. What is the component of force effecti
kaheart [24]
You want to draw a free body diagram of the forces on the sled in the horizontal x-direction.

If you visualize the system in an x-y coordinate plane, the force along the x-direction is the angle it makes with the x-axis multiples by the force.

The angle made with the x-axis is cosine of the angle theta.

Please see picture attached.

5 0
3 years ago
Read 2 more answers
How popsicles are made?
crimeas [40]
It is made<span> by freezing flavored liquid (such as fruit juice) around a stick, generally resembling a tongue depressor. Often, the juice is colored artificially. Once the liquid freezes solid, the stick can be used as a handle to hold the ice pop</span>
6 0
3 years ago
What is the freezing point of an aqueous solution that boils at 101 degrees C? Kfp = 1.86 K/m and Kbp = 0.512 K/m. Enter your an
astra-53 [7]

Answer:

-3.63 degree Celsius

Explanation:

We are given that

Boiling point of solution=T_b=101^{\circ} C

Boiling point water=100 degree Celsius

K_f=1.86K/m

K_b=0.512 K/m

\Delta T_b=T-T_0

Where T=Boiling point of solution

T_0=Boiling point of pure solvent

\Delta T_b=101-100=1^{\circ}C

\Delta T_b=k_bm

Using the formula

1=0.512\times m

Molality,m=\frac{1}{0.512} m

\Delta T_f=k_fm

Using the formula

\Delta T_f=\frac{1}{0.512}\times 1.86

\Delta T_f=3.63 C

We know that

\Delta T_f=T_0-T_1

Where T_0 =Freezing point of solvent

T_1= Freezing point of solution

Using the formula

3.63=0-T_1

Freezing point of water=0 degree Celsius

T_1=0-3.63=-3.63 C

Hence, the freezing point of solution=-3.63 degree Celsius

7 0
3 years ago
During physical activity of moderate intensity, your heart will beat at a percentage of its maximum rate. What is the target hea
Phoenix [80]
The target heart rate for moderate-intensity activity is 80%
8 0
3 years ago
Other questions:
  • What are the physics
    8·1 answer
  • What are the differences between deterministic forces and thermal agitation?
    13·1 answer
  • What do I do if someone is choking me with both of their hands, inside of the classroom and the teacher isn't around? How do I g
    8·1 answer
  • Lighting is to thunder as lunch
    9·2 answers
  • What is the maximum power that can be delivered by a 1.4-cm-diameter laser beam propagating through air
    14·1 answer
  • People in finance work mostly with: <br> Insurance <br> Products <br> Information <br> Money
    6·2 answers
  • A human being can be electrocuted if a current as small as 50 mA passes near the heart. An electrician working with sweaty hands
    12·1 answer
  • What new characteristics did john dalton add to the model of the atom
    15·1 answer
  • Speed with direction unit M/S, in a direction
    14·1 answer
  • What happens when ice melts, according to the kinetic theory?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!