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A 40 centimeter long organ pipe is filled with air at 0oC and is open at both ends. The velocity of sound in air at 0oC is 331 m/s. Another 40 centimeter long organ pipe is filled with air at 20oC and is open at both ends. Find the beat frequency between fundamental frequencies of the two organ pipes?
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.31 Earth years in its circular orbit around its sun
at one instant the center of mass of a system of two particles is located on the -axis at 2.0m and has a velocity of
A scientist changes the frequency of an incident X-ray to 4.50e19 Hz and measures the deflected X-ray frequency of 4.32e19 Hz. What was the angle of deflection
A person who weighs 635 N is riding a 98 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 7.25 105 Pa, what is the area of contact between each tire and the ..
A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.6 m/s,hoping to land on the roof of an adjacent building. Air resistanceis negligible. The horizontal distance between the two buildings isD, and the roof of t..
in the model of the hydrogen atom due to niels bohr the electron moves around the proton at a speed of 3.3 times 106 ms
A hand bicycle pump should compress air from atmospheric pressure to the pressure inside the tire (usually 5 or 6 atmospheres). Please estimate the temperature of the air as it enters the tire.
A planet of radius R is made up of three segments; a core of radius R/3 and density r/3, a middle shell from radius R/3 to 2R/3 and density r/2, and an outer shell from radius 2R/3 to R and density 3 r. What is the average density of the planet as a ..
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 680m to be the other plate.
Exploding shoes. The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. The sudden conversion of water to water vapor causes adramatic expansion that can rip apart shoes. Water has density 1000kg..
violet light and red light travel through air and strike a block of plastic at the same angle of incidence. the angle
Suppose a light bulb is rated for a voltage of 1.8 V. At this voltage is draws a current of 0.054A, Using Ohm's Law, determine the resistance of the bulb
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