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Q. An opera singer in a convertible sings a note at 419 Hz while cruising down the highway at 81.0 km/hr. What is the frequency (in Hz) heard by a person standing beside the road in front of the car? Assume that the speed of sound is 343 m/s

Q. Two masses, m1 and m2, are lying on a plane without friction and are connected by a striong. A force F is applied to the mass m1 so that the whole system accelerates along a straight line. What is the tension of the string T between the masses m1 and m2? What is the acceleration of the system?

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Category:- Physics
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