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A railroad train is traveling at 30.0 m/s in still air. The frequency of the note emitted by the train whistle is262 Hz. The speed of sound is 344 m/s.
A: What frequency is heard by a passenger on a train moving in the opposite direction to the first at 18.0 m/s and approaching the first?
B: What frequency is heard by a passenger on a train moving in the opposite direction to the first at 18.0 m/s and receding from the first?
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
Pitman Co's tax rate is 40% for 2013 an all future years. At the end of 2013, the following deferred tax account and balance that should be reported on Pitman's balance sheet is?
Find the wavelengths of these extremes at a temperature. find out the force exerted by the man on the rope, and the work done in dragging the box over a distance of 15m.
The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.50 to 3.50 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide and 30 cubits high.
Two particles with charges +8e and -4e are initially very far apart (inifinite distance). which is the change in the electric potential energy
A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic, What are the speeds of the U.S. and the French subs
A very small call (m = 4 gms) hangs on a thread at an angle of ? = 30o. What is the strength of the electric field
A flagpole of length 9 m and mass 35 kg is hinged at one end, where it is connected to a wall as sketched below. The pole is held up by a cable attached to the end. Find out the tension in the cable. (Assume the flagpole has an uniform mass distr..
An excited electron in Na atom emits radiation at a wavelength 589nm and returns to the ground state. If the mean time for the transition is 20ns, ineherent width in the emission line.
A 70 g metal block moving at 200 cm/s slides across a tabletop a distance of 83 cm before it comes to rest. how much does the temperature of the block rise
A particle has an acceleration of 6.19 m/s^2 for 0.350 s . At the end of this time the particle's velocity is 9.26 m/s What was the particle's initial velocity?
A football resting on the ground is kicked at an angle of 35.0° towards the uprights with an initial speed of 20.0 m/s
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