Identify the speed and the mass of the object
An object has a kinetic energy of 327 J and a momentum of magnitude 29.9 kg·m/s. Find the speed and the mass of the object.
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A microphone is placed 3.20m distant from a point midway between the two speakers, where an intensity maximum is recorded. How far must the microphone be moved to the right to find the first intensity minimum?
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Afterward, three beats per second are heard when the strings vibrate at the same time. What is the new frequency of the string that was tightened?
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An average friction force of 4.0 x 103 N impedes the car's motion so that its speed at the bottom of the driveway is 3.8 m/s. What is the length of the driveway?
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