What is most likely the color of the light whose second-order bright band forms an angle of 13.5° if the diffraction grating has
2 answers:
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Answer:
93.75 m/s
Explanation:
Given:
The frequency of the sound = 750 Hz
The number of pistons making the sound = 8
Revolutions made by the engine = 2000 revolutions/ km
Thus,
the frequency of sound by 1 piston = 750 / 8 = 93.75 Hz
also, it is given that for every other revolution sound is made.
thus, for every 2 revolution sound is made
therefore,
Number of revolutions per second = 93.75 Hz × 2 = 187.5 rev/s
Now,
the speed of the car will be calculated as:
= Number of revolutions per second / Revolutions made by the engine
or
The speed of the car =
or
The speed of the car = 0.09375 km/s = 93.75 m/s
Explanation:
It is given that,
The angular acceleration of the basketball,
Time taken, t = 3 seconds
We need to find the ball’s final angular velocity if the ball starts from rest. It can be calculated using definition of angular acceleration i.e.
So, the ball's final angular velocity is 30 rad/s. Hence, this is the required solution.