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
polet [3.4K]
3 years ago
5

If the intensity level of one trombone is 70 dB, calculate a reasonable estimate for the intensity level of 76 trombones all pla

ying simultaneously in the same place
Physics
1 answer:
kogti [31]3 years ago
8 0

Answer:

 β₂ = 88.8 dβ

Explanation:

The intensity of the sound is

        β = 10 log (I / I₀)

The sensitivity threshold (I₀) for humans is 1 10⁻¹² W / m²

       I = I₀  10^{\beta /10}

       I = 10⁻¹² 10^{70/10}  

       I = 1 10⁻⁵ W / m²

The total intensity for the 76 trombones is

         I_total = n I

         I_total = 76 1 10⁻⁵

         I_total = 76 10⁻⁵ W / m²

Let's find the sound level

       β₂ = 10 log (76 10⁻⁵ / 10⁻¹²)

       β₂ = 88.8 dβ

You might be interested in
If Cell fragments are found in a rock sample it was most likely that The Rock formed
Ira Lisetskai [31]
5 is  4) shallow water, 6 is 2)sedimentary i think but I'm not 100% sure and 7 is 21%
7 0
3 years ago
Hola me pueden ayudar con este problema de física....por favor mirar la imagen.. gracias
makkiz [27]
Si la velocidad es 3 m/s, y ellos quieren saber la distancia despues 2 segundos, necesita que multiplicar 2 y 3.

La respeusta debiera ser 6m.
8 0
3 years ago
A motor develops 80 kW of power as it lifts a loaded elevator 20.5 m in 45 s. How much force does the motor exert? *
yuradex [85]

Answer:

F=1.3⋅105N

Explanation:

It's common knowledge.

7 0
2 years ago
The New Horizons probe that passed by Pluto during July 2015 is one of the fastest spacecraft ever assembled. It was moving at a
LenKa [72]

Answer:

2.91 x 10¹² sec

Explanation:

d = distance of nearest star, Proxima Centauri  = 4.3 ly = 4.3 x 9.46 x 10¹⁵ m

v = speed of new horizon probe = 14 km/hr = 14000 m/s

t = time taken for the new horizon probe to reach nearest star, Proxima Centauri = ?

Using the equation

d = v t

Inserting the values given

4.3 x 9.46 x 10¹⁵ = (14000) t

t = 2.91 x 10¹² sec

7 0
3 years ago
Mixing chemicals in a cold pack creates a reaction that:
MatroZZZ [7]
Honestly i don’t know but I’d just guess if I were you
7 0
3 years ago
Read 2 more answers
Other questions:
  • A total solar eclipse is visible from
    10·2 answers
  • 4. Ron and Hermoine are fighting over the Monster book of Monsters and they are both pulling on the book with a force of 14 N (e
    10·2 answers
  • An 80kg student running at 3.50m/s grabs a rope that is hanging vertically. How high will the student swing?
    9·1 answer
  • You come across an open container which is filled with two liquids. Since the two liquids have different density there is a dist
    12·1 answer
  • A child of mass 47 kg sits on the edge of a merry-go-round with radius 1.3 m and moment of inertia 56.3953 kg m2 . The merrygo-r
    15·1 answer
  • The purpose of fuses and circuit breakers is to
    12·1 answer
  • The blades of a fan running at low speed turn at 26.2 rad/s. When the fan is switched to high speed, the rotation rate increases
    7·2 answers
  • The cross country team goes on a 10 mile run after school. They end the run outside of the locker room where they started fund t
    6·1 answer
  • Thirty-five coulombs of charge flow through a wire in 2 minutes. determine the current in the wire.
    10·1 answer
  • At some point in an underground horizontal pipe, the speed of water is 2.5m/s and the gauge pressure is 2×104 Pa. What is the ga
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!