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Ultrasound is used to view the interior of the body, much as x rays are utilized. For sharp imagery, the wavelength of the sound should be around one-fourth (or less) the size of the objects to be viewed. Approximately what frequency of sound is needed to produce a clear image of a tumor that is 1.00 across if the speed of sound in the tissue is 1550 ?
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. What is the mass of the heaviest rock that, in perfectly still water, won't sink the plastic boat
Will a grandfather clock which is accurate at 20C run fast, slow, or the same on a 30C day? The clock's pendulum consists of a brass mass supported by a long, thin brass rod.
Use the following values for mass and charge: an electron has mass me = 9.11x10-31 kg and charge -e, a proton has mass mp = 1.67x10-27 kg, What is the kinetic energy of the electron
A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range R. At what angle is the rock thrown
A series RLC circuit consists of a 107 ohm resistor, a 15.0 mH inductor, and a 0.500 nF capacitor. What is the power supplied to the circuit if w =1/2wo
Five charges are placed in a closed box. Each charge (except the first) has a magnitude which is twice that of the previous one placed in the box. find the magnitude of the smallest charge in the box
Suppose a proton and an alpha particle each have kinetic energy 8.6MeV. Find speed of the alpha particle
Two geological field teams are working in a remote area. A globalpositioning system (GPS) tracker at their base camp shos the location of the first team as 36km away, 13degree north of west,and the second team as 22km away, 37degree east of north.
How much force does a 150,000 N/C force exert on a deuteron.
How much time passes by they collide
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How long will the mortar shell remain in the air
A block of mass 4.0 kg is put on top of a block of mass M = 5.5 kg. To cause the top block to slip on the bottom one, while the bottom one is held fixed, a horizontal force of at least 16 N must be applied to the top block. The assembly of blocks is ..
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