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An earthquake produces two basic types of waves: surface waves and bulk waves. The former move along the surface of the earth much like the ripples in the surface of a pond, while the other type propagate through the whole earth forming a hemisphere around the point of origin of the quark assuming that it occurred close to the surface.
One particular earthquake produces bulk and surface waves with identical amplitudes at 1 km from the epicentre. What is the ratio of the amplitude of the surface wave to the bulk wave 134 km from the epicentre of the quake assuming that the earth is a perfect, uniform wave medium?
The windpipe of a typical whooping crane is about 4.5 feet long. What is the lowest resonant frequency of this pipe
An uncharged capacitor and a resistor are connected in series to a battery, as shown in the figure above. If V = 14.0 V, C = 5.30 µF, obtain the time constant of the circuit
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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
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You throw a ball straight down from an apartment balcony to the ground below. find the height of the balcony
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Vector A ? has magnitude 10.0m m and vector B ? has magnitude 18.0m m . The scalar product A ? ?B ? is 90.0m 2. What is the magnitude of the vector product
A loudspeaker receives 8.0 W of power from an audio amplifier, and turns 3 % of that power into sound waves. What is the decibel intensity at this distance
A capacitor with an initial potential difference of 100 V is discharged through a resistor when a switch between them is closed at t = 0. At t = 10.0 s, What is the time constant of the circuit
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