That's false. It's the other way around. One light year is a distance that's a little farther than 63,000 astronomical units.
Answer:
The power is 
Explanation:
From the question we are told that
The distance from the siren is 
The intensity level is 
The threshold of hearing is 
Generally the intensity level is mathematically represented as
![\beta = 10dB * log [\frac{I}{I_o} ]](https://tex.z-dn.net/?f=%5Cbeta%20%20%3D%20%2010dB%20%2A%20log%20%5B%5Cfrac%7BI%7D%7BI_o%7D%20%5D)
Where I is the intensity at which the siren radiates the sound
substituting values
![49 = 10 * log [\frac{I}{1.0 *10^{-12}} ]](https://tex.z-dn.net/?f=49%20%20%3D%20%2010%20%2A%20log%20%5B%5Cfrac%7BI%7D%7B1.0%20%2A10%5E%7B-12%7D%7D%20%5D)
=> 
Now the amount of power the siren put out is mathematically evaluated as
Where A is the area of the siren which is taken as a sphere and it is mathematically evaluated as
So
substituting values
Answer:
Angle of incline is 20.2978°
Explanation:
Given that;
Gravitational acceleration on a planet a = 3.4 m/s²
Gravitational acceleration on Earth g = 9.8 m/s²
Angle of incline = ∅
Mass of the stone = m
Force on the stone along the incline will be;
F = mgSin∅
F = ma
The stone has the same acceleration as that of the gravitational acceleration on the planet.
so
ma = mgSin∅
a = gSin∅
Sin∅ = a / g
we substitute
Sin∅ = (3.4 m/s²) / (9.8 m/s²)
Sin∅ = 0.3469
∅ = Sin⁻¹( 0.3469 )
∅ = 20.2978°
Therefore, Angle of incline is 20.2978°
Answer:
The correct answer is - 6.49 × 10^3 mm.
Explanation:
The correct scientific notation of the given subtraction problem is:
6.94 × 10^3 mm - 4.5 × 10^2 mm = _____.
The correct number of significant digits is
a. 6.94 × 10^3 mm = 3
b. 4.5 × 10^2 mm = 2
So subtracting the 6.94 × 10^3 mm - 4.5 × 10^2 mm
= 6940 - 450
= 6.49× 10^3 mm.
I believe the pressure would increase because there would be less room for the gas to move, making it more difficult and resulting in added pressure
