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Question: Suppose Eq. describes a wave traveling down a gas-filled pipe. Let A = 5Pa; λ = 10cm. What would be the extra pressure in the pipe at x = 2.5cm? At x = 7.5cm?
y = A sin(2π x) (λ)
A resistance R and a 1.5-H inductance are in series across a 60-Hz ac voltage. What is the ac input voltage
A set of crash tests consists of running a test car moving at a speed of 13.0 m/s (28.6 m/h) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
A 17.4kg block is dragged over a rough, horizontal surface by a constant force of 160N acting at an angle of 25.1 degrees above the horizontal. Find the magnitude of the work done by the force of friction
A particle is at the position (x,y,z)=(1.0,2.0,3.0)m. It is traveling with a vector velocity (-5.0,+2.8,-3.1)m/s. Its mass is 3.8kg. What is its vector angular momentum about the origin
An atom in a solid vibrates at 10THz with amplitude 10pm. Find the atom's maximum speed
A piece of audio equipment is said to have a signal-to-noise ratio of 52 dB. Obtain the ratio of intensities of the signal and the background noise
It is desired to construct a solenoid that will have a resistance of 4.80 (at 20°C) and produce a magnetic field of 4.00 10-2 T at its center when it carries a current of 4.00 A. The solenoid is to be constructed from copper wire having a diameter..
A solid ball encounters a 0.760 m vertical rise on the way back to the ball rack. Find the translational speed at the top
A train (an engine and four cars) is accelerating at 1.60 m/s^2 . The mass of each car is 3.60 x 10^4 kg, What is the force of the first car on the second car
What are the magnitude and direction of an electric field that will cause the electron to continue to move horizontally? Ignore gravity. Calculate the radius of the electron's path in the magnetic field.
Distinguish between alternating current and direct current. Why are home appliances connected in parallel rather than in series? Compare the law of charges and the law of poles
A diver 48 m deep in 18°C fresh water exhales a 0.6 cm diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake
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