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Q1: Does the speed of sound in air depend on the frequency? Explain in detail.
Q2: What is evidence that sound is a form of energy?
Q3: What is evidence that sound travels as a wave?
Q4: A loud speaker on a tall pole broadcast sound waves equally in all directions. If the sound output is 5.0 W, at what distance from the loudspeaker is the sound intensity level 90 dB?
Q5: A football fan sits in the upper deck of a large football stadium and has a portable sound device to cheer for his team. The device emits its sound equally in all directions, and it has the property that the sound is loud enough that someone sitting 300 m away on the other side of the stadium can hear it above the crowd noise of 80 dB. Why do you not want to be sitting 1 m in front of the fan?
The linear acceleration of the center of mass of a yo-yo is 2.0m/s^2 as it rolls by gravity down its string. what is its rotational inertia
An irregular neutral conductor has a hollow cavity inside of it and is insulated from its surroundings. Find the charge on the inner surface and outer surface of the conductor
Relative to the ground determine the angle of the velocity vector of the package just before impact.
After driving for several hours, the temperature in the tire reaches 120 degrees Fahrenheit.
1. The catapult on an aircraft carrier can take an aircraft weighing 300,000 N from 0 to 180 mph in 12.7 seconds, at which time the aircraft launches. What is the acceleration of the aircraft when it launches? Express your answer in the MKS system..
a si sample is doped with arsenic impurities at a concentration of 1017 cm-3. calculate the intrinsic electron
When a force of 3 N was applied, the speed of an object was increased from 20 m/s to 50 m/s in 2 seconds. What is the mass of this object
The uncertainty in the position of an electron along an x axis is given as 56 pm, which is about equal to the radius of a hydrogen atom. What is the least uncertainty in any simultaneous measurement of the momentum component px of this electron?
The spaceship Intergalactica lands on the surface of the uninhabited Pink Planet, which orbits a rather average star in the distant Garbanzo Galaxy. A scouting party sets out to explore. The party\'s leader–a physicist, naturally–immediately makes..
An artillery expert fires a cannonball at an angle of 36.87o at an enemy encampment sitting on a plateau 40 m high and 300 m horizontally from the cannon. How long was the cannonball in the air
A high-voltage power line carries a current of 120A at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, 63 degrees below the horizontal. Find the magnitude of the magnetic force exerted on a 290m length..
The drawing shows an A-shaped ladder. Both sides of the ladder are equal in length. Determine the tension in the crossbar of the ladder
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