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1. A bystander hears a siren vary in frequency from 476 Hz to 404 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of the sound in air to be 343 m/s)
2. An open organ pipe is 0.50 m long. If the speed of the sound is 340 m/s, what are the pipe's fundamental frequency and the frequencies of the first two overtones?
Determine the tension T in the string.
The best laboratory vacuum has a pressure of about 1 × 10-18 atm, or 1.010 × 10-13 Pa. How many gas molecules are there per cubic centimetre in such a vacuum at 293K.
A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 5.00m above the base of the hill. How much rotational kinetic energy did it then have
Your are sitting in your car, which is standing at the side of the road with the engine idling. After what distance will you catch up with your classmate
A ray of light passes from air during dense flint glass and then back into air. The angle of incidence on the first glass surface is 80.0°. The thickness of the glass is 8.00 mm; its front and back surfaces are parallel. How far is the ray displaced ..
q1. assuming that the maximum amplitude of the field at point o for the wave from midway between the slits is er now
A ball is thrown horizontally from the top of a 20-m high hill. It strikes the ground at an angle of 45 degrees. With what speed was it thrown?
Consider an infinite arrangement of capacitors shown in the figure. C1= nF and C2 = nF. What is the equivalent capacitance Ceq
A straight, vertical wire carries a current of 1.28 amp downward in a region between the poles of a large superconducting electromagnet, Determine the magnitude of the magnetic force on a section of the wire with a length of 1.00 centimeter that is..
Two sheets of polarizing material are placed with their transmission axes at right angles to each other. What is the intensity of the transmitted light when the middle sheet is removed
What weight of water is displaced by a 100-ton floating ship? What is the buoyant force that acts on the ship
A solar powered robotic airplane to explore the Martian atmosphere has wings, each with area 10.0 m2, designed so that air flows over the top of the wing at 245 m/s and underneath the wing at 222 m/s. Determine what mass of plane will this lift sup..
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