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Sound propagating through air at 30oC passes through avertical cold front into air that is 4.0oC. If the soundhas a frequency of 2400 Hz, by what percentage does its wavelength change in crossing the boundary?
Suppose one gallon of gasoline produces 1.1 x 108 J of energy, and this energy is sufficient to operate a car for twenty miles. how many miles could the car go with that energy
You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind, What is the speed of the police car
In a diesel engine, the piston compresses air at 302 K to a volume that is 0.0623 of the original volume, What is the temperature of the air after the compression
A basketball player jumps straigh up to launch a long jump shot at an angle of 45 degrees with the horizontal and a speed of 15 m/s. How far from his original position does he land
A typical ten-pound car wheel has a moment of inertia of about 0.35kg *m2. What is the rotational kinetic energy K of the rotating wheel
A room has dimensions of 4.2 m long, 3.5 m wide, and 2.4 m high. What is the weight of the air in the room
A 25g ball is fired with an initial speed v1 toward a 150g ball that is hanging motionless from a 1.30m string. The balls have a perfectly elastic collision. As a result, 150 g ball swings out until the string makes an angle of 37° with vertical. ..
An ordinary glass is filled to the brim with351.0mL of water at 100°C. If the temperature decreased to29°C, how much water could be added to the glass
The maximum current in a superconducting solenoid can be as large as 3.54 kA. what is the magnitude of the magnetic field it produces
The equation of a transverse wave traveling along a very long string is y = 5.0 sin (0.055 ?x + 6.0 ?t), compute the amplitude of propagation of the wave
Under controlled darkened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 503nm, What is the intensity in (W/m^2) delivered to a rod
A spaceship of proper length 306 m takes 0.70 µs to pass an Earth observer. find the speed of this spaceship as measured by the Earth observer.
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