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Blue whales apparently communicate with each other using sound of frequency 17.0 , which can be heard nearly 1000 away in the ocean. What is the wavelength of such a sound in seawater, where the speed of sound is 1538 ?
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
A car of mass 1430 kg traveling at 28 m/s is at the foot of a hill that rises 105 m in 3 km. Find the average power delivered by the car's engine
An ice cube slides from rest without friction down a long inclined ramp that makes an angle of 20.0o with the horizontal. What is the speed of the cube
What is closing equilibrium temperature of the tin-water
A 18.60 kg piece of zinc at 75 degrees Celsius is placed in a container of water. The water has a mass of 20 kg and has a temperature of 10.10 degrees Celsius before the zinc is added. What is the final temperature of water and zinc.
Gas in a container is at a pressure of 1.5 atm and a volume of 4.0m3. What is the work done on the gas (a)if it expands at constant pressure to twice its initial volume? (b) if it is compressed at constant pressure to one-quarter its initial volum..
What horizontal force acts on the puck after the push
assume that you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 rm m/s . The river has a current that runs at a speed of 1.00 rm m/s.
A jet flying at 132 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 1.88 105 kg
For a common emitter amplifer, current gain is 70. If the emitter current is 8.8mA, Calculate the collector and base current. Also calculate current gain
Compute the average intensity
As soon as a traffic light turns green, a car speeds up from rest to 59.0 mi/h with constant acceleration 7.00 mi/h/s. For what time interval is the bicycle ahead of the car
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