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The frequency of a steam train whistle as it approaches you is 538Hz. After it passes you, its frequency is 486Hz. How fast was the train moving? (please show work for credit)
The pendulum in a grandfather clock is made of brass and keeps perfect time at 15. How much time is gained or lost in a year if the clock is kept at 29
A more realistic car would cause the wheels to spin in a manner that would result in the ground pushing it forward with a constant force (in contrast to the constant power in Part A). If such a sports car went from zero to 30.0 in time 1.10 , how ..
To finance her community college education, Joanna takes out a Stafford loan for $4500. How much will she pay
A singly ionized 24Mg ion (mass 3.983 10-26 kg) is accelerated through a 2.8 kV potential difference and deflected in a magnetic field of 500 G in a mass spectrometer. Find the radius of curvature of the orbit for the ion
questiona violet and a red beam of light with wavelengths of 400nm and 700nm respectivelynbspat the same time strike an
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 671 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.029 m below the center. What is the horizontal distance betwee..
A water pipe is having a 2.5cm inside diameter carries water into the basement of a house at a speed of 0.90m/s, what are the speed AND water pressure at the second floor
You have a 0.421-kg sample of gas containing 1.99 moles. Calculate the rms, average, and most probable speeds of the gas\'s molecules
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this
A 38.0-kg child swings in a swing supported by two chains, each 2.90 m long. The tension in each chain at the lowest point is 418 N. Find the child's speed at the lowest point
When two identical ions are separated by a distance of 8.3x10^-10m and the electrostatic force each exerts on the other is 5.3x10^-9N How many electrons are missing from each ion
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 7.00 V. What is the power drawn from the electric outlet
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