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A small earthquake starts a lamppost vibrating back and forth. The amplitude of the vibration of the top of the lamppost is6.5 cm at the moment the quake stops, and8.6 s later it is 2.1 cm.
1. What is the time constant for the damping of the oscillation?
2. What was the amplitude of the oscillation 4.3 s after the quake stopped?
the space shuttle orbited the earth in a circular orbit with a radius of 200 miles greater than the earths radius.a
A convex lens is held over a piece of paper outdoors on asunny day. When the paper is held 26 {\rm cm} below the lens, the sunlight is focused on the paper and the paperignites. What is the focal length of the lens?
water flows at 0.20ls through a 8.0-m-long garden hose 2.5cm in diameter that is lying flat on the ground. the
when the pressure on saturated liquid water is suddenly reduced to a lower pressure in an adiabatic and aergonic
A balloon is rubbed with a wool glove. The two items attract one another with a force of strength 0.6 N, How many electrons were transferred
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A charged isolated metal sphere of diameter 26.0 cm has a potential of 8400 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere
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An unlikely weapon was once proposed which had all of the people in China to jump up and down simultaneously. Calculate what the speed of the Earth and the people would be after the collision
The current density in a 3 μm thick × 75μm wide gold long film is 750,000 A/m2. The current flows along the length of the film. Estimate what is the current in the gold film
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