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
Nonamiya [84]
3 years ago
9

The loudness l of a sound, measured in decibels, is given by l=10log10r, where r is the sound's relative intensity. suppose one

person talks with a relative intensity of 10^6 or 60 decibels. how much louder would 100 people be, talking at the same intensity?
Physics
1 answer:
marishachu [46]3 years ago
5 0

Answer

given,                              

I is the loudness of sound

I = 10 Log₁₀ r                  

r is relative intensity                    

at when relative intensity is 10⁶        

I = 60 dB                                                  

how much louder when 100 people would be talking together

I = 10 Log₁₀ r                

I = 10 Log₁₀ (10⁶ x 100)  

I = 10 Log₁₀ (10⁸)                

I = 80 dB                      

hence, the intensity will be increased by (80 dB -60 dB) 20 dB when 100 people start talking together.

You might be interested in
Which is a characteristic of an amorphous solid?
12345 [234]

Answer:

4. Becomes softer as temperature rises

Explanation:

An amorphous solid is any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel. Solids and liquids are both forms of condensed matter; both are composed of atoms in close proximity to each other.

5 0
2 years ago
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1300 N/C and points at an ang
V125BC [204]

Answer:

2954.6 N/C, 46.36 degree from positive  axis

Explanation:

E1 = 1300 N/C, θ1 = 35 degree

E2 = 1700 N/C, θ2 = 55 degree

Now write the electric fields in vector form

E1 = 1300 ( Cos 35 i + Sin 35 j) = 1064.9 i + 745.6 j

E2 = 1700 ( Cos 55 i + Sin 55 j) = 975.08 i + 1392.6 j

Resultant electric field

E = E1 + E2

E =  1064.9 i + 745.6 j + 975.08 i + 1392.6 j

E = 2039.08 i + 2138.2 j

Magnitude of E

E = sqrt (2039.08^2 + 2138.2^2)

E = 2954.6 N/C

Let it makes an angle Φ from X axis

tan Φ = 2138.2 / 2039.08 = 1.049

Φ = 46.36 degree from positive X axis.

5 0
3 years ago
What is the amount of thermal energy needed to raise the temperature of 1 of a substance by ?
Goryan [66]

Answer:

It is the amount of energy required to raise the temperature of one gram of a substance by one degree Celsius.

Explanation:

Hope this helps and have a good day

7 0
3 years ago
Positive ions from a base and negative ions from an acid form a .
Trava [24]

Positive ions from a base and negative ion from an acid form salt.

 

<span>To add, table salt or common salt is a mineral composed primarily of sodium chloride, a chemical compound belonging to the larger class of salts. Rock salt or halite is also the common term for salt in its natural form.</span>

3 0
3 years ago
Read 2 more answers
Why isn't Coulomb's law valid for dielectric objects, even if they are spherically symmetrical?
marshall27 [118]

Answer:

Explanation:

The "traditional" form of Coulomb's law, explicitly the force between two point charges. To establish a similar relationship, you can use the integral form for a continuous charge distribution and calculate the field strength at a given point.

In the case of moving charges, we are in presence of a current, which generates magnetic effects that in turn exert force on moving charges, therefore, no longer can consider only the electrostatic force.

4 0
3 years ago
Other questions:
  • A Projectile is fired with a velocity of 8m/s at and angle of 65 . what is the vertical component of the velocity ?
    8·1 answer
  • A 128.0-N carton is pulled up a frictionless baggage ramp inclined at 30.0∘above the horizontal by a rope exerting a 72.0-N pull
    5·1 answer
  • A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.75 m above the bottom of the chute and w
    7·1 answer
  • A bicycle rider increases his speed from 5 m/s to 15 m/s in while accelerating at 2.5 m/s2. How long does this take ?
    5·2 answers
  • An example of Newton's third law of motion is...
    14·1 answer
  • Which is true?
    5·2 answers
  • What is the gravitation force between you and your friend between 1 km
    7·1 answer
  • Alcohol is being heated on the stove and distillates at 172.4⁰F . What is this temperature on the Celsius degree?
    10·1 answer
  • NEED AN ANSWER FAST PLEASE 70 PTS
    6·1 answer
  • Can work output exceed work input?<br> Yes<br> No
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!