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a sound wave traveling in 26 degrees C air has a pressure amplitude of 0.500 Pa. (assume that the density of air is 1.29 kg/m^3).
What is the intensity of the wave?
What intensity level in decibles does the sound in the preceding part correspond to?
When the galvanometer in a wheatstone bridge circuit shows no deflection, explain why are the voltages across opposite branches on each side of the galvanometer necessarily equal?
The mass of a bottom quark is \(4.2 GeV/c^{2}\), What was the energy of the proton beam and how fast were they moving
A cylindrical tank with a large diameter is filled with water to a depth D = 0.298 m. What is the rate at which water flows out
A magnifying glass uses a converging lens with a focal length of 15.5 cm. It produces a virtual and upright image that is 3.3 times larger than the object. How far is the object from the lens
An oil film with n = 1.45 floats on water. It is illuminated by white light from the sun at noon. If the film is 280 nm thick, find the wavelength and color of visible light that is most strongly reflected upward to an observer positioned above th..
A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.50 m/s collides head-on with a 0.84 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision?
A barefoot field-goal kicker imparts a speed of 26 m/s to a football at first at rest. If the football has a mass of 0.24 kg and the If the football has the mass of 0.24 kg and the time of contact with the ball is 0.037 s, what is the force exerte..
The left end of a long glass rod is 8.00 cm in diameter, with an index of refraction of 1.60, is ground, Find the position of the image of the arrow formed by paraxial rays incident on the concave surface
A 1200kg car rounds a curve of radius 65 m banked at an angle of 14degrees. if the car is traveling at 30km/hr, will a friction force be required? if so, how much and in what direction.
A group of explorers in Antarctica can obtain water only by melting ice. They wish to make 4 cups of coffee, determine the amount of heat required and the amount of power required
Two blocks of mass 2kg and 4 kg are held together by a string force of 10N is applied on 2kg and 20N on 4kg find the tension in the string connected between two blocks
Start with the thin lens equation and solve for the image distance in terms of the focal length and object distance. Use this to explain why you can expect a real image only
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