Answer:
dβ = 70. 77 dβ
Explanation:
The intensity of sound in decibels is
dβ = 10 log I/I₀
let's look for the intensity of this signal
I / I₀ = 10 dβ/10
I / I₀ = 3.981 10⁶
the threshold intensity of sound for humans is I₀ = 1 10⁻¹² W / m²
I = 3.981 10 ⁶ 1 10⁻¹²
I = 3,981 10⁻⁶ W / m²
It is indicated that 3 cornets are placed in the circle, for which total intensity is
I_total - 3 I
I_total = 3 3,981 10⁻⁶
I_total = 11,943 10⁻⁶ W / m²
let's reduce to decibels
dβ = 10 log (11,943 10⁻⁶/1 10⁻¹²)
dβ = 10 7.077
dβ = 70. 77 dβ
Answer:

Explanation:
The ball is moving in a circle, so the force is centripetal.
One formula for calculating centripetal force is:

The mass of the ball is 0.5 kilograms. The radius is 1.9 meters. The centripetal force is 85 Newtons or 85 kg*m/s².
= 85 kg*m/s²- m= 0.5 kg
- r= 1.9 m
Substitute the values into the formula.

Isolate the variable v. First, multiply both sides by 1.9 meters.



Divide both sides by 0.5 kilograms.



Take the square root of both sides of the equation.



The original measurements have 2 significant figures, so our answer must have the same.
For the number we found, 2 sig fig is the ones place. The 9 in the tenth place tells us to round the 7 to an 8.

The maximum speed is approximately <u>18 meters per second.</u>
The laws of conservation of energy and conservation of angular momentum ensure that any rotating, collapsing cloud will end up as a spinning disk is the reason.
<h3>What is an Orbit?</h3>
This is defined as a curved path in space which is characterized by an object going round and round a planet, moon, or star.
In this scenario, all the planets orbit the Sun in the same direction and in nearly the same plane to ensure any rotating, collapsing cloud will end up as a spinning disk.
Read more about Orbit here brainly.com/question/3668699