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Two adjacent natural frequencies of an organ pipe are determined to be 525 Hz and 595 Hz. (Assume the speed of sound is 343 m/s.)
(a) Calculate the fundamental frequency of this pipe.(b) Calculate the length of this pipe.
A coil with 50 turns (radius 15cm) with a total resistance of 4 ohms is placed in a uniform magnetic field directed perpendicularly to the plane of the coil. The magnitude of this field caries with the time according to B=Asin(alpha t) where A=80*..
Flying due east, the plane flies with the rotation of the Earth, while flying due west, it flies against the rotation. Will the flight times be the same? Different? Why?
Three children, each of weight 356N, make a log raft bylashing together logs of diameter 0.30m and length 1.80m. How many logs will be needed to keep them afloat in fresh water
a car weighs 1,725 kg and is speeding on I-75 at 90 miles per hour. The brake rotors are made of 20 kg of iron and steel composite. What is the temperature change in the rotors
A monatomic ideal gas ( = 1.67) is contained within a box whose volume and pressure are 3.1 m3, Find the speed of sound in the gas
a cannon fires a cannon ball at 954.4 ms in a straight line that passes directly over an observers head. if the
Which is larger for a uniform disk of mass M and radius R that is rolling without slipping: its translational or its rotational kinetic energy? A. It's translational kinetic energy B. It's rotational kinetic energy C. Both are the same D. Question ca..
A heat engine in each cycle extracts 50,000 Btu of thermal energy and rejects (or releases) 20,000 BtU of thermal energy. How many Btu of work is done each cycle
A positive charge of q = 3.5 µC is pulled on by two negative charges. One, -2.0 µC, is 0.050 m to the north and the other, -4.0 µC, is d = 0.029 m to the south. What total force is exerted on the positive charge .
A bullet of mass mB=1.09?10?2kg is moving with a speed of 101.m/s when it collides with a rod of mass mR=6.51kg and length L=1.04m, What is the change in kinetic energy in the collision
Air that initially occupies 0.80 m3 at a gauge pressure of 140 kPa is expanded isothermally to a pressure of 101.3 kPa, Compute the work done by the air
A parallel-plate air capacitor of area A= 19.0 cm2 and plate separation d= 2.80 mm is charged by a battery to a voltage 58.0 V. how much additional charge will flow from the battery onto the positive plate
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