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A longitudinal standing wave can be created in a long, thin aluminum rod by stroking the rod with very dry fingers. This is often done as a physics demonstration, creating a high-pitched, very annoying whine. From a wave perspective, the standing wave is equivalent to a sound standing wave in an open-open tube. In particular, both ends of the rod are anti-nodes. What is the fundamental frequency of a 2.30 -long aluminum rod?
A nonconducting disk of radius a lies in the z = 0 plane with its center at the origin. The disk is uniformly charged and has a total charge Q. Find Ez on the z axis at the following positions.
A lever uses an effort arm of 4.75 m and has a resistance arm of 21.5 cm. What is the mechanical advantage of the lever
A goose flying toward you at 13.8m/s emits a squawk, which you hear at 265Hz. Find the wavelength of the sound you hear
A 2.3 box, starting from rest, is pushed up a ramp by a 10 force parallel to the ramp. The ramp is 2.0long and tilted at 17 . The speed of the box at the top of the ramp is 0.80 .
At the time the switch is closed completing a simple LC circuit, the capacitor has 3.4 J of stored energy and the inductor has no stored energy. What is the energy stored in the inductor at that time
find speed at which the ball left the quarterback's hand.
The current in an RL circuit is zero at time t = 0 and increases to half its final value in 3.6 s. What is the time constant of this circuit
Air in a balloon does 46 J of work while absorbing 94 J of heat. What is the change in internal energy
A 0.1kg ball is attached to a string and whirled around in a circle overhead, What is the maximum speed the ball can have when the radius of corcle is 1m
A helium-neon laser (wavelength = 630 nm) is used in a single-slit experiment with a screen 7.5 m away from the slit. what is the width of the central bright fringe on the screen
A roughly spherical volume of rock 2.1 km in radius is 30% denser than the surrounding rock, calculate the gravitational acceleration it produces at Earth's surface
You push a box up a ramp inclined at 26.2o using a force of 230.0N, for a distance of 10.9 m. How much work do you do in the horizontal direction
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