The top of the WINDOW is 19 meters from the ground. also steel balls dont bounce.
<span>What is the quality of the sound of a fire truck’s siren when it moves toward a stationary hearer?
Its High Pitched
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What is the quality of the sound of a fire truck’s siren when it moves away from a stationary hearer?
Its Low Pitched
Answer
The refracted wave must obey Snell's equation
Ni sin θi = Nr sin θr
If Nr differs from Ni then sin θr will differ from sin θi
If the wave originates from point A and ends at point B then Snell's Law shows that the time for light to get from point A to point B is a minimum.
Answer: Mechanical Energy and Electrical Energy
Explanation: A generator converts mechanical energy into electrical energy, while a motor does the opposite - it converts electrical energy into mechanical energy.
The car acceleration is 22.2 repeating meters per second squared
