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A cylindrical aluminum pipe of length 1.57 m has an inner radius of 2.20 x 10-3 m and an outer radius of 2.80 x 10-3 m. The interior of the pipe is completely filled with copper. What is the resistance of this unit? (Hint: Imagine that the pipe is connected between the terminals of a battery and decide whether the aluminum and copper parts of the pipe are in series or in parallel.)
in a series LRC circuit the frequency at which the circuit is at resonance is f0, if you double the resistance, the inductance, what is the new resonance frequency
A 17.0 kg monkey hangs from a cord suspended from the ceiling of an elevator. What was the direction of the elevator's acceleration
A factory worker moves a 30.0 crate a distance of 5.20 along a level floor at constant velocity by pushing horizontally on it. What magnitude of force must the worker apply
Two cars B and C approach car A in opp directions with a speed of 54 km/h each. At a certain instant, when the distance AB is equal to AC, both being 1km, B decides to overtake A before C does.
A 0.60- mass attached to a vertical spring of force constant 150 oscillates with a maximum speed of 0.30. Find the maximum magnitude of the acceleration
a parachutist relies on air resistance mainly on her parachute to decrease her downward velocity. she and her parachute
The record for the highest speed achieved in a laboratory for a uniformly rotating object was 2.01e3m/s for a 0.15m long carbon rod
Find the speed parameter and Lorentz factor for an electron that has a kinetic energy of 5.00 keV.
If the pipe is open at one end only, how many harmonics are possible in the normal hearing range from 20 to 20000 Hz
You want to nail a 1.3-kg board onto the wall of a barn. What happens to the force of static friction if you push against the wall with a force greater than that found in part A
You have a 0.441-kg sample of gas containing 1.85 moles. You measure the gas\'s temperature and find 52.1°C. Calculate the rms, average, and most probable speeds of the gas\'s molecules.
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +44.0 cm. How far behind the concave lens should the film be placed
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