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A pipe fitted with air at 20oC produces two successive harmonics at 240 Hertz and 280 Hertz. Find how long is the pipe and is it open or closed?
The vibration of a system in the ground state is called zero point motion, because the molecule is at zero kelvin. The tips of air plane wings(mass of order 10^4 kg) oscillate in flight (period of 1 s, amplitude of 0.1 m), could this be zero point mo..
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. In a particular region, electrons move to the right at 9350 m/s and protons move to the left at 1681 m/s. The particles are evenly spaced with 0.085..
The distance from the Sun to Jupiter is 5.2 times longer than the Earth-Sun distance. Take the intensity of sunlight at the Earth tobe 1385 W/m 2 . Find the intensity of sunlight at Jupiter.
Helium (He), a monatomic gas, fills a 0.012 m3 container. The pressure of the gas is 6.90x 10^5 Pa. How long would a 0.25 hp engine have to run (1 hp = 746 W) to produce an amount of energy equal to internal energy of this gas.
An unknown particle in an accelerator moving at a speed of 2.0 x108 m/s has a measured relativistic mass of 3.00kg. What must its rest mass be
why is it far less dangerous to stand in front of an intense beam of red light than in front of a very low-intensity
1. what is the equation for wavelength in terms of force?2. what wavelength is required to get 5 standing wave segments
A bird is launched at a speed of 25 meters per second at an angle of 29(deg) to horizontal from a height of 1.3m above the ground, write the velocity vector in component form
A ray of red light in air (wavelength=650nm) is incident on a semicircular block of clear plastic (n=1.51 for this light), Th ray strikes the block at its center of curvature at an angle of incident of 27 degrees. Determine the wavelength of the l..
A vibration sensor, used in testing a washing machine, consists of a cube of aluminum 1.50 cm on edge mounted on one end of a strip of spring steel (like a hacksaw blade) that lies in a vertical plane. what is its frequency of vibration
Two equal positive charges of magnitude q1 = q2 = 5.5 nC are on the y axis at y1 = +3 cm and y2 = -3 cm. What is the force exerted on a third charge q0 = 4 nC when it is placed on the x axis at x = 2 cm
An object is located 13.5 cm in front of a convex mirror, the image being 7.45 cm behind the mirror. A second object, twice as tall as the first one, is placed in front of the mirror, but at a different location.
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