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For a closed pipe 22.7 meter long, find what is the frequency of the fifth harmonic at 90 F? Determine what is the wavelength?
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that six different wavelengths are observe, what is the shortest wavelength
A 400-W immersion heater is placed in a pot containing 2.0 litters of water at 20 C.(a) how long will it take to bring the water to boiling temperature assuming that 80% of the available energy is absorbed by the water?(b) how much longer will it tak..
Two long, coaxial cylindrical shell conductors carry equal and opposite charges. The inner shell has radius "a" and charge +q, and the outer shell had radius "b" and charge -q. Find the potential difference between the shells
A small glass bead charged to 6.9nC is in the plane that bisects a thin, uniformly charged, 10-cm-long glass rod, What is the total charge on the rod
A hypothertical 30 cm long arm. For the purposes of answering this question assume that the arm itself is weightless. what is the maximum mass that can be held in the hand if the muscle is attached 2 cm from the bleow
An unpolarized laser has an average power of .6 mW. At a distance of 10 m it forms a circle with a diameter of 2 mm. Intensity = 5.23 x 10^-4. Erms= .444 v/m. what is the speed of light in the polarizer
A boy scout starts a fire by using a lensfrom his eyeglasses to focus sunlight on kindling 5.6 cm from the lens. What is the magnification when the eye is relaxed
A cardinal (Richmondena cardinalis) of mass 4.00×10-2 and a baseball of mass 0.143 have the equal kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of the baseball's momentum?
A system consisting of an ideal gas at the constant pressure of 120kPa gains 800J of heat a)Find the change in volume of the system if the internal energy of the gas increases by 480J b)Find the change in volume of the system if the internal energ..
a helium neon laser emits light that has a wavelength of 632.8 nm. the circular aperature through which the beam
A horizontal wire of length 0.53 m, carrying a current of 7.5 A, isplaced in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force. When the wire istilted upward at an angle of 19 degrees, it experiences a m..
In a grocery store, a convex mirror with R= 4.0 m is used for surveillance. Suppose a person of height 1.7 m is 12 m from such a mirror. What is the size of the image
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