Either 25% or 75%. does it to how much is wasted or the difference in the input and waste?
Don't look now, but the question GIVES you the formula to use, and it GIVES you the numbers to plug into the formula.
The formula to use to find the distance covered by the sound is
<em>Speed = (distance) / (time)</em>
They also give you:
speed = 330 m/s
time = 0.40 second
Stuff the numbers into the formula:
330 m/s = (Distance) / (0.40 second)
Multiply each side by (0.40 second), and you get:
(330 m/s) / (0.4 second) = Distance
<em>825 meters = Distance</em>
Answer:
The answer is 7.52 m/s².
Explanation:
To determine acceleration, N = Ma×g ÷ cos Ф
N sin Ф = ma
a = g Tan Ф m/s²
g = 9.8 m/s² and Ф = 37.5° ( angle for the velocity and gravitational force)
so, a = 9.8 × tan (37.5°)
Acceleration has to be determined in order to get the final answer.
a = 7.5198 m/s²
The energy in wind CAME from radiant energy originally, but it isn't
radiant energy any more. It's the energy in the mass of moving air,
and that's KINETIC energy.
You could move the turbine blades with stones or pingpong balls,
push the blades with your hands, or shoot water at them from a hose.
In any case, you'd have moving mass with kinetic energy transfer that
energy to the turbine. A moving mass of air does the same thing.
