The four basic perceptual characteristics of sound are pitch, loudness, quality and fidelity. Pitch is the perception of a high or low sound, loudness is the intensity of a sound, phase is the increase and decrease in pressure cycle any single vibration, loudness is a quality defined as the intensity of sound energy as it comes in contact with an eardrum or other surface.
So, according to the question:
distance = 90 miles
time = 1h 45min + 15 min + 1h = 3h
Answer:
The height of the squirrel 
Explanation:
From the question we are told that
The horizontally speed is 
The horizontal distance 
Generally the the time taken is mathematically represented
=> 
=> 
Generally from kinematic equation we have that
Here u is the initial velocity of nut in the vertical and the value is 0 m/s
=>
C 82.4 N sorry man if i am wrong but don't even think about reporting my answer
Answer:
Explanation:
Given
N0 = 20kg (original substance)
decay constant λ = 0.179/sec
time t = 300s
We are to find N(t)
Using the formula;
n(t) = N0e^-λt
Substitute the given values
N(t) = 20e^-(0.179)(300)
N(t) = 20e^(-53.7)
N(t) = 20(4.7885)
N(t) =143.055
To know how much of the original material that is active, we will find N(t)/N0 = 143.055/20 = 7.152
About 7 times the original material is still radioactive
