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A sound wave in air at 20C has a frequency of 151Hz and a displacement amplitude of 5.20×10 3mm. The pressure amplitude is 2.04 Pa. Discover the intensity of the wave. Use 1.42 x 10^5 Pa for the bulk modulus and 1.2 kg/m^3 for the density of air.
A voltage V is applied to the primary coil of a step-up transformer with a 3:1 ratio of turns between its primary and secondary coils. A resistor R connected to the secondary dissipates a power P = 100 W. How much power is dissipated by the same r..
A magnetic field is perpendicular to the plane of a single turn circular coil. Find what emf and current are induced in the square coil
Two people are pushing their stalled car up a hill with anincline of 4.20 degrees. They are pushing parallel to the surfaceof the hill. The cars mass is 954 kg. What is the combined forcethey must apply to keep the car moving at a constant speed up t..
vertically polarized light with an intensity of 40 wm2 passes through a polarizer whose transmission axis is at an
As the refrigerant passes through the compressor, heat transfer to the surrounding occurs at a rate of 0.32 kJ/s. Determine at steady state the power input to the compressor, in kW.
A 30 kg child rides a 9 kg sled down a frictionless ski slope. At the bottom of the hill, her speed is 7 m/s. If the slope makes an angle of 15° with the horizontal, how far did she slide on the sled?
A current is generated in a secondary coil that is used in an AC generator to create the power we get from our wall sockets at home. obtain changing which allows a current to be generated
A 100 gram iron block that has been heated to 200 degrees Celsius, What is the final temperature of the system
A small ball is attached to one end of a spring that has an unstrained length of 0.188 m. The spring is held with the other end, and the ball is whirled around in a horizontal circle at a speed of 2.91m/s. The spring remains nearly parallel to the gr..
How strong is the electric field between the plates.
question a ray of light in air strikes a glass plate n 1.50 at an incidence angle of 500. determine the angles of the
On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into the Snohomish River below. The swimmers stepped off the bridge, and I estimated that they hit the water 1 s later.
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