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What is the power of a sound wave (B = 32 dB) passing through an area of 12.5 cm ^2? Suppose the same sound wave passes through an area of 25 cm^2. What is its intensity level?
In a single-slit diffraction pattern on a flat screen, the central bright fringe is 1.7 cm wide when the slit width is 3.9 x10-5 m. When the slit is replaced with a second slit, the wavelength of the light and the distance to the screen remaining unc..
An electron travels with v=4.40 x 10^6 i m/s through a point in space where E=(2.1 x 10^5 i, -2.1 x10^5 j) V/m and B =-.12k T. What is the force on the electron
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.6 cubic meters of sea water. What is the buoyant force acting on the object
a lan uses 1500 m fiber with a loss of 2.0 dbkm. there are 10 connector pairs with a loss of 0.75 db each. if the power
A disk between vertebrae in the spine is subjected to a shearing force of 575 N. Find its shear deformation, taking it to have a shear modulus of 1.40 × 109 N/m2
Waves from a radio station have a wavelength of 300m. They travel by two paths to a home receiver 20.0km from thetransmitter. What is the minimum distance from the mountain to the receiver
insects do not have lungs as we do nor do they breathe through their mouths. instead they have a system of tiny tubes
4.30 g lead bullet traveling at 320 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A satellite circles the earth in an orbit whose radius is 2.25 times the earth's radius. What is the period of the satellite
a car with a flat top contains a 3.2-cm thick piece of ice lying on its top. determine how fast this car must travel
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, twelve years have elapsed on earth, and 9.2 years have elapsed on board the ship. How far away (in meters) is the planet according to t..
A city bus begins from rest at one bus stop. It accelerates at 0.5 m/s2 for 25 s, What is the distance between the two bus stops
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