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A sonar signal of frequency 1.00 x 106 Hz has a wavelength of 1.50 mm in water.
1. What is its period in air?
2. What is its period in water?
3. What is the speed of the signal in water?
A 2.00 kg. frictionless block is attached to an ideal spring with force constant 300 n/m. At t=0 the block has velocity -4.0 m/s, what is the position of the block when its speed is 2.5 m/s
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a sodium atom with a mass of 3.3910-25 kg and a charge of 1 is hovering 3.00 m above the ground. a second particle with
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