Answer:
130.2dB
Explanation:
The formula for determining the intensity of a wave is expressed as
Where P is the power in watts, and A is the area of the sphere formed by the wave
Data given
Power,P=3.65*10^5W
distance,d=52.7
Hence since the distance represent the radius, we can determine the area of the sphere formed
The intensity can be computed as
we can convert to decibel
The magnitude of the change in momentum of the block is 0.8 kg m/s.
<h3>
Change in momentum</h3>
A change in momentum is the different between the final momentum and the initial momentum of the object.
The magnitude of the change in momentum of the block between zero and 4.0 seconds is calculated as follows;
where;
- Vf is the final velocity at 4 seconds = ?
- Vo is the initial velocity at 0 seconds = 0
From the graph the velocity at 4 seconds is calculated as;
ΔP = 2(0.4 - 0)
ΔP = 0.8 kg m/s
Thus, the magnitude of the change in momentum of the block is 0.8 kg m/s.
Learn more about change in momentum here: brainly.com/question/7538238
Answer:
Explanation:
m = p_sphere*V A = pi*r^2 v_t= sqrt(2mg/Dp_airA)
The Attempt at a Solution
m = (870 kg/m^3)(4/3)pi(0.085 m)^3 = 2.24 kg
A = pi(0.085 m)^2 = 0.0227 m^2 v_t = sqrt[2(2.24 kg)(9.80 m/s^2)/(0.500)(1.20 kg/m^3)(0.0227 m^3)] = 56.8 m/s
Answer:
Please translate it for me then I will answer the question
Explanation:
Please translate it for me