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Problem: The speed of sound in humans is about 1500 m/s, the same as in water.
Part A: What would be the wavelength of 5 MHz medical ultrasound waves in humans?
Do not copy and paste from Google, explain your answer clearly.
Think about a beam of electrons in a vacuum, passing during a very narrow slit of width 2.00 \;\mu{\rm m}. The electrons then head toward an array of detectors a distance0.9080 m away.
A puck is sliding without friction on the ice at a speed of 2.48 m/s. Find the speed and direction of the second puck after the collision
The spring is aligned with the plane and has a spring constant of 133 N/m. Explain how much does the spring stretch?
The position of a particle moving along an x axis is given by x = 19t2 - 2.0t3, where x is in meters and t is in seconds. compute the maximum positive coordinate reached by the particle
The center of the spherical metal ball of radius R, carrying a negative charge -Q, is located a distance r from the center of a short, thin, neutral copper wire of length L. The induced charges at the two ends of the wire is ±q. Determine the polariz..
show that the horizontal distance that the aircraft engine falls is 8400 m. If the airplane somehow continues to fly as if nothing had happened. where is the engine relative to the airplane at the moment the engine hits the ground?
a 100 g ice cube at -10deg c is placed in an aluminum cup whose initial temperature is 70deg c. the system comes to an
A positron is an antimatter particle identical in mass to an electron but with a positive charge, Calculate the energies of the three lowest states of positronium
A 54-kg water skier is being pulled by a nylon (Young's modulus 3.7 x 109 N/m2) tow rope that is attached to a boat. What is the change in length of the rope when the skier has an acceleration whose magnitude is 0.59 m/s2
A disk of radius 12 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 8.1 rad/s2. Find the angular velocity of the disk
a horizontal spring with spring constant of 9.72 nm is attached to a block with a mass of 1.20 kg that sits on a
Discover the magnetic field on the z axis What happens if the block is immersed in carbon disulfide
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