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A Doppler speed meter operating at exactly 1.02 x 10^5 Hz emits sound waves in the direction of anoncoming baseball. The meter detects the reflected sound waves and measures a beat frequency of .30X10^5Hz. Determine the speed of the baseball
A barbell consists of two small balls, each with mass 600 grams (0.6 kg), at the ends of a very low mass rod of length d = 20 cm (0.2 m). The center of the barbell is mounted on the end of a low mass rigid rod of length b = 0.3 m, and this rod rot..
In an ultra-low-temperature experiment, a collection of sodium atoms enter a special state called a Bose-Einstein condensate in which the index of refraction is 1.57 107
A jet with mass m = 50000.0 kg jet accelerates down the runway for takeoff at 1.7 m/s2. What is the net horizontal force on the airplane as it levels off
An object is initially placed on the optical axis 21.2 cm to the left of a convex lens that has a focal length of 12.1 cm. what is the new image distance
Treating the clouds as an ideal gas with adiabativ index γ=5/3 work out the relationship between the inital and final temperatures for a given radius.
A coil with an inductance of 16.8 H and a resistance of 5.5 ? is suddenly connected to a resistanceless battery with an ? = 194.0 V. What is the rate at which thermal energy is appearing
The plane is inclined at an angle of 24.9 degrees with the horizontal. Using the accerlation due gravity from your reference table. Illustrate what is the magnitude of object's acceleration?
two parallel wires have a current of 22A flowing through each oneof them. when the wires are placed 25cm apart, find the length of the wires
A swing is made from a rope that will tolerate a maximum tension of8.00*102 N without breaking. Initially, the swing hangsvertically. The swing is then pulled back at an angle of60.0o with respect to the vertical and released fromrest. What is the ..
A Wm = 890-N man sits on top of a stepladder of negligible mass that rests on a frictionless floor as shown in the figure below. Calculate the tension in the cross brace
A vessel which contains an ice-water mixture at 0C is in thermal contact with a water-steam mixture at 100 C. how many grams of ice melts
a 12,000 volt line produces 100,000 watts with a current of8.3 amps. If the voltage were only 240 volts, what would be the power expended as heat
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