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The radius of a typicalhuman eardrum is about 4.0 mm. Find the energy persecond received by an eardrum when it listens to sound that is atthe threshold of hearing. Find the energy per second receivedby an eardrum when it listens to sound that is at the threshold of pain.
A mass of 21.21 kg is attached to a light string t is wrapped around a cylindrical spool of radius 10 cm and moment of inertia 4 kgm2. How long does it take to reach floor
A gyroscope is precessing about a vertical axis. Describe what happens to the precession angular speed if the angular speed of the spinning flywheel is doubled. (All other variables remaining the same.)
A red laser from the physics lab is marked as producing 632.8-nm light. When light from this laser falls on two closely spaced slits, What is the wavelength of light produced by the pointer
A 57-kg water skier is being pulled by a nylon tow rope that is attached to a boat. The unstretched length of the rope is 11 m, What is the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
The small currents in axons corresponding to nerve impulses produce measurable magnetic fields. What is the strength of the field at a distance of 1.2mm
The electric field at point P just outside the outer surface of a hollow spherical conductor of inner radius 15 cm and outer radius 31 cm has magnitude 465 N/C and is directed outward.
A person working on the transmission of a car accidentally drops a bolt into a tray of oil. The oil is 4.86 cm deep. What is the index of refraction of the oil
A 50 newton horizontal force pushes a 10 kg mass sitting on a horizontal surface. What is the acceleration of the mass
A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. find the distance (in m) between the cliffs
Suppose that 0.10mol of argon gas is admitted to an evacuated 50cm3 container at 20° C. The gas then undergoes isobaric heating to the temperature of 300°C. What is the final pressure of gas? What is the final volume.
If it takes an average force of 8.79 N to push a 4.35-g dart 4.65 cm into a dart gun, assuming the barrel is frictionless, how fast will the dart exit the gun
A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air through a 1.00 cm thick flat piece of crown glass and back to air again. At what angles do the two colors emerge from the glass
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