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The human eardrum has an area of 5.0×10-5 m2.
(a) What is the sound power received when the incident intensity is the minimum perceivable, 1.0×10-12 W/m2?
(b) What is the sound power at the eardrum for conversational speech, which has a sound level of 65 dB?
(c) What is the sound power at the threshold of pain, 140 dB?
A ray of light passes from air through dense flint glass and then back into air. How far is the ray displaced as a result of traveling through the glass
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If the atom could be enlarged to the size of a football field, and the electrons were represented by gnats, how large would the nucleus be
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 4.4. find the resulting angular speed of the student and the stool
And if the plane could fly without this pilot, how much force would the plane require to maintain the equal acceleration?
The wheel of a car has a radius of 0.360 m. The engine of the car applies a torque of 426 N·m to this wheel, What is the magnitude of the static frictional force
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Two solenoids of radii 2 cm and 5 cm are coaxial. They are each 25 cm long and have 380 and 960 turns, respectively. Find their mutual inductance in mH
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light with a wavelength of 600nm (6*10-^7m) strikes a single slit that is 0.5 mm (5*10^-4m) wide. How wide is the central bright fringe of this diffraction pattern
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