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The Doppler effect using ultrasonic waves of frequency 2.25×10^6 Hz is used to monitor the heartbeat of a fetus. A (maximum) beat frequency of 240 Hz is observed.
1) Assuming that the speed of sound in tissue is 1540 m/s, calculate the maximum velocity of the surface of the beating heart.
A carbon resistor is made of a cylinder of carbon, of diameter 7.4 mm. what is the length of the cylinder
What is the gauge pressure of the water at the pump? Suppose steady, laminar flow of water, no viscosity, and no air drag on the water jet. The acceleration of gravity is 9.81 m/s2.
A solenoid that is 111 cm long has a cross-sectional area of 13.8 cm2. There are 958 turns of wire carrying a current of 7.62 A. Calculate the energy density of the magnetic field inside the solenoid
A 5 kg block has an initial speed of 10m/s down a frictionless include plane. Determine the amount by which the spring compress
A 28-m3 tank is filled with 2910 moles of an ideal gas. The temperature of the gas is initially 302 K, but it is raised to 740 K. find the change in the pressure of the gas inside the tank
One solenoid is centered inside another. The outer one has a length of 55.0cm and contains 6800 coils, Find the emf induced in the inner solenoid
A spaceship is approaching the earth at a relative speed of 0.85c. The mass of the ship is 1.00 X 107 kg. find the classical momentum of the ship
A projectile is fired with an initial speed of 36.2m/s at an angle of 41.1 degrees above the horizontal on a long flat firing range. determine maxiumum height reached by projectile
A model rocket is fired vertically from rest. It has a net acceleration of 15.0 m/s2. After 1.1 s, its fuel is exhausted and its only acceleration is that due to gravity. how high does the rocket travel
An pickup truck with mass 1.79 103kg is traveling eastbound at +14.1 m/s, Find the speed of the entangled vehicles after the collision
A charged isolated metal sphere of diameter 20.0 cm has a potential of 9000 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere
You are standing still and watching a spaceship fly past. How fast is the spaceship moving, relative to you
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