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Weather observation stations are generally much more closely spaced over land than over ocean. Speculate on how this difference might influence a meteorologist's ability to represent accurately the state of the atmosphere.
a fan at a rock concert is 35.0m from the stage and at this point the sound intensity level is 108db . sound is
The magnetic component of an electromagnetic wave in vacuum has an amplitude of 85.8 nT and an angular wave number of 4.40 rad/m. What is the rms value of the electric component
A juggler performs in a room whose ceiling is 9 feet above the level of his hands he throws a ball vertically upward therefore that it just reaches the ceiling, Compute with what initial velocity does he throw the ball
an iron casting containing a number of cavities weighs 5.70e3 n in air and 3.74e3 n in water. what is the total volume
A graph of position versus time for a spring oscillation is shown below. The mass of the oscillator is known to be 4.00 kg . Answer the following questions concerning the motion of the mass. What is the maximum velocity of the oscillator?
A communications satellite with a mass of 400kg is in a circular orbit about the Earth. Calculate the wieght of the satellite on the surface of the earth
A 5-kilogram object initially slides with speed vo in a hollowfrictionless pipe. The end of the pipe contains two springs. one nested inside the other, Calculate the spring constant for the inner spring
A 5-kg fish swimming 1 m/s swallows an absentminded 1-kg fish swimming toward it at a speed that brings both fish to a halt immediately after lunch. What was the speed of the smaller fish
the electric field inside a 20.91 cm long copper wire is 0.071 vm. what is the potential difference between the ends of
Consider a half-infinite hollow cylindrical shell (that is, one that extends to infinity in one direction) with radius R and uni- form surface charge density σ . What is the electric field at the midpoint of the end face?
A child of mass 40.0 kilogram is sitting on a horizontal seesaw at a distance of 1.9 meter from the supporting axis. Evaluate the magnitude of the torque about the axis due to the weight of the child
A circular rod of length 25cm and diameter 8mm is made of 1045grade steel. (a) calculate the stress and strain in the rod, and its extension, when it is subjected to 5kN of tension.
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