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Olympic champion swimmer Michael Phelps swam at an average speed of 2.01 m/s during the first half of the time needed to complete a race.
What was his average swimming speed during the second half of the race if he tied the record, which was at an average speed of 2.05 m/s
Breathing deep, your professor inhales air at 0.203 m/s. As the air goes through a constriction in his bronchus, it doubles in speed. How much does the air pressure drop in the constriction
A series RLC circuit with a resistance of 350 ohm has capacitive and inductive reactances of 260? and 510?, respectively. What is the power factor of the circuit
he boat continues for an additional 5.90 s with an acceleration of +0.518 m/s2. Following this, the boat accelerates at -1.49 m/s2 for 8.05 s. What is the velocity of the boat at t = 21.35 s? Find out the total displacement of the boat?
Three sheets of plastic have unknown indices of refraction. Sheet 1 is placed on top of sheet 2, and a laser beam is directed onto the sheets from above, what is the expected angle of refraction in sheet 3
Satellite orbits the earth at a distance equal to twice the earth's radius above the surface of the earth (the total distance from the center of the earth is three times the radius of the earth).
Suppose we rely upon friction between the wall and the rod to hold up the sign (there is no hinge attaching the rod to the wall). What is the smallest value of the coefficient of friction
Determine what minimum horsepower must a motor have to be able to drag a 350 kilogram block up a 15o ramp at a speed of 1.50 m/s if the coefficient of kinetic friction is 0.25
A light beam strikes a piece of glass at a 60 degree incidentangle. What is the angle between the 2 refracted beams
A 66 kg woman cheats on her diet and eats a 643 Calorie (540 kcal) jelly donut for breakfast. How many joules of energy is the equivalent of one jelly doughnut?
Three balls are constrained to move on the circumference of a circle of radius R. find the characteristic frequencies of the system
A ballot box with mass m = 6.0 kilogram slides with speed v= 4.0 m/s across a frictionless floor in the positive direction of the x axis. Find the velocity of the second piece, with mass m2
In the conduction equation Q = (kA?T)t/L, the combination of factors kA/L is called the conductance. By what factor can the body adjust the conductance
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