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Question:
a) If you install special sound-reflecting windows that reduce the sound intensity level by 32.0 dB, by what factor have you reduced the sound intensity?
b) If, instead, you reduce the intensity by half, what change (in dB) do you make in the sound intensity level?
An electromagnetic doorbell has been constructed by wrapping 66 turns of wire around a long, thin rod, What is the magnitude of the angular velocity of the rod
Determine how far away from the sun, in meters, were the Voyager 1 and 2 spacecraft as of 2 January 2009? Research this information using the Internet and any other sources you can find
A bullet of mass 11.1 g is fired into an initially stationary block and comes to rest in the block. How much kinetic energy is lost
A cylindrical container of inside diameter 0.6 meter is filled with gasoline to a depth of 2 meter. Determine what is the mass of the gasoline
A student throws a set of keys vertically upward to her sorority sister, who is in a window 2.20 m above. With what initial velocity were the keys thrown
Two circular current loops are located at z = +R/2 and z = ?R/2, parallel to the xy-plane and centered at the z-axis. Derive a formula for the magnetic field at an arbitrary point on the z-axis. Note by symmetry that B(x) = Bz(z) k
A suitcase full of platinum sits at the bottom of a lake. A recovery diver finds that as he lifts the suitcase to the surface, What is the volume of the large suitcase
A 110 turn square wire coil of area 0.040 m2 rotates about a vertical axis at 1700 rev/min, Calculate the maximum emf induced in the coil by the Earth's field
A 30.0kg - goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50×10?2m and period 1.60s.b, What is the maximum acceleration of the finch
A 76.1-%u03A9 resistor is connected in parallel with a 125.6-%u03A9 resistor. find the power dissipated in the 125.6-%u03A9 resistor
Two cars collide head-on while each is traveling at 80 km/hr. What is the temperature increase of each car
A cosmic ray electron moves at 7.85 multiplied by 106 m/s perpendicular to the earth's magnetic field at an altitude where field strength is 1.10 multiplied by 10-5 T
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