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Two lamps of 8 and 32 C.P .are placed 120 cm apart . find the positions on the line joining them where screen would be equally illuminated.
A 100-m-long train accelerates uniformly from rest. If the front of the train passes a railway worker 166-m down the track at a speed of 21 m/s, what will be the speed of the last car as it passes the worker.
A tornado in the shape of a cylinder with a diameter of 100 m has an axis of rotation through its center which is along the vertical direction. The sense of rotation is cyclonic (counterclockwise). The wind is purely rotational, with a wind speed ..
Two identical 1.40 kg masses are pressed against opposite ends of a spring of force constant 1.70 N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth
If your conducting an experiment by heating a Styrofoam cup of water with an electric current of 2.8A, a voltage of 11V, How much time does it take to complete the experiment
Use the worked example above to help you solve this problem. A balloon contains 4.40 moles of a monatomic ideal gas. Find the work Wenv done by the gas in expanding the balloon
A planet with a mass of 4.47E21 kg is in a circular orbit around a star with a mass of 4.83·1030 kg. The planet has an orbital radius of 1.31E10 m. What is the linear orbital velocity of the planet
During an Apollo lunar landing mission, the command module continued to orbit the Moon at an altitude of about 100 kilometer. How much time did it take to go around the Moon once
The tropical year, the time from vernal equinox to the next vernal equinox, is the basis for our calendar. Find the number of seconds in one and a half tropical years
A mass of 120 kg is suspended on a rope and a steel beam as shown on the diagram below. d1 = 2 m, d2 = 4m, and d3 = 5m. Draw a diagram that shows all the forces involved in this problem. Find the tension in the rope and the steel beam.
A brick is initially 7.72 cm high and an aluminum can is initially 7.73 cm high. By how much should their temperatures be raised in order for the brick and the can to have accurately the similar height?
Two parallel slits are illuminated with light composed of two wavelengths, one of which is 645 nm. On a viewing screen, the light whose wavelength is recognized produces its third dark fringe at the same place where the light whose wavelength is unk..
A BWR reactor core may contain up to 146 tons of uranium. Why does it not form a critical mass when molten? Are there any estimates of the critical mass of the resulting zirconium alloy, steel, concrete and uranium oxide mixture?
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