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The Doppler effect using ultrasonic waves of frequency 2.27×10^6hz is used to monitor the heartbeat of a fetus. A (maximum) beat frequency of 526hz is observed...Assuming that the speed of sound in tissue is 1.54*10^3 , calculate the maximum velocity of the surface of the beating heart.
Atomic Hydrogen in the ground state absorbs a photon, raising the electron to the n=3 excited state. Determine the number of classical revolutions the electron makes during the 0.1 ns time interval
A coaxial cable consists of a central cylindrical wire and a concentric cylindrical conductor, with the space between filled by a dielectric material. If the radius of the wire is 2.5mm, the inside radius of the cylindrical conductor is 2.0mm, and..
A liquid (? = 1.65 g/cm3) flows through two horizontal sections of tubing joined end to end. In the first section the cross-sectional area is 10.0 cm2, the flow speed is 265 cm/s, and the pressure is 1.20 105 Pa.
A railroad train is traveling at 30 m/s. The locomotive whistle emits a loud tone at frequency 440 Hz. what is the frequency of the sound heard by a stationary listener in front of the locomotive
An 800 g ball moves in a vertical circle on a 1.07-m-long string. If the speed at the top is 5-m/s, after that the speed at the bottom would be 8.18 m/s.
A simple pendulum of length 2.00 m is made with a mass of 2.00 kg. What is the maximum angle away from the lowest position the pendulum will reach
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.730 s to reach the opposite tower, 20.0 m away. If a 1 meter length of ..
Use the following scenario for questions 8-10. The mass of Football Player A is 117 kg, and his linear velocity is 6.12 m/s. Calculate linear momentum of Football Player A
q.what is the magnitude of the apparent weight of a 84 kg astronaut 4800 km from the center of the earths moon in a
The objects are then released from rest. Assuming that the particles never reach the pulley, and also that the particles do not rebound when they strike the ground.
Two different wavelengths of monochromatic light are projected through the same double slit. First a 490 nm light is projected, calculate the unknown wavelength
Two narrow slits, illuminated by light consisting of two distinct wavelengths, produce two overlapping colored interference patterns on a distant screen. What is the ratio of the two wavelengths
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