What are the lowest and the highest frequencies

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Q. A 225-kg crate is pushed horizontally with a force of 685 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

Q. A whistle of frequency 650 Hz moves in a circle of radius 69.0 cm at an angular speed of 12.0 rad/s. Use 343 m/s for the speed of sound in air. What are the lowest and the highest frequencies heard by a listener a long distance away, at rest with respect to the center of the circle?

Reference no: EM1359773

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