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Two loudspeakers in a 20oC room emit 720 Hertz sound waves along the x-axis.
If the speakers are in phase, determine the smallest distance between the speakers for which the interference of the sound waves is perfectly destructive?
If the speakers are out of phase, determine the smallest distance between the speakers for which the interference of the sound waves is maximum constructive?
A 0.5 kilogram wheel which has a moment of inertia of 0.03 kg m^2 is turning at 30 rev/s. Find what is the wheel rotational kinetic energy
The 2.4-m reflecting Hubble Space Telescope has been placed into Earth orbit by the space shuttle. What angular resolution could this telescope achieve ifthe wavelength is 500 nm?
A 60.0-g object is attached to a horizontal spring with a force constant of 15.0 N/m, What is the velocity of the object
A 4.50{kg} ornament is hanging by a 1.00{m} wire when it is suddenly hit by a 3.00kg missile traveling horizontally at 12.0{m}/{s} . The missile embeds itself in the ornament during the collision.
A 2300 kilogram car, moving at 15 m/s collides with a bridge abutment, which stops it in 0.56 second. Find the magnitude of the average force that acts on the car during impact
A plane normally takes 10 hours to travel 5, 500 miles. One day significant headwinds slow the plane down, how long will the entire trip take
An event occursin system K' at x' = 2m , y'=3.5mz'= 3.5 m and t'=0. What are the coordinates of the event in sytem
What least horsepower must a motor have to be able to drag a 280 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
Levitation by Light Pressure. Consider an isolated hydrogen atom of mass 1.66 x10^- 27 kg. Find the number of photons that must strike the atom per second, and the corresponding and optical power, for it not to fall under the effect of gravity, gi..
an object lifted 10 meters gains 200 j of potential energy. if the same object is lifted 20 meters its potential energy
a professors office door is 0.96 m wide 2.2 m high 4.1cm thick has a mass of 20 kg and pivots on frictionless hinges. a
Based on EPA estimated carbon credits value of $70 per metric ton of carbon in 2050, estimate the financial value of the carbon market for the coal-fired electricity system in the US. Briefly put that dollar value in perspective.
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