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At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction by one third the car's speed hears a frequency of 415 Hz. What is the speed of the car? Is the cyclist ahead of or behind the car?
At a certain harbor, the tides cause the ocean surface to rise, Compute how long does it take for the water to fall a distance d/4from its highest level
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge.
1 2-49 a rigid tank with a volume of 2.5 m3 contains 5kg saturated liquid-vapor mixture of water at 75 degc is heated
The two plates of a parallel plate capacitor are 5.8 mm apart and have a potential difference between the of 220 V. Find the magnitude of the electric field between the plates
You hike 2/3 of the way to the top of the hill at a speed of 3.5 miles per H and run the final third at a speed of 5.6 miles per H
an unstable particle at rest breaks up into two fragments of unequal mass.the mass of the lighter fragment is equal to
two charged balls one with a charge of 5.0 micro coulombs and the other with a charge of 2.4 micro coulombs are placed
The drawing shows six point charges arranged in a rectangle.The value of q is 9.0 μC, and the distance d is 0.13 m. Find the total electric potential at location P, which is at the center of the rectangle.
An outfielder throws a 0.150 kg baseball at a speed of 36.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
A loop of area 0.100 m^2 is rotating at 3600 rpm (revolutions per minute) with an axis of rotation perpendicular to a 0.20 T magnetic field. what is the maximum voltage induced in the loop
A 74.8 g sample of copper at 143.2°C is added to an insulated vessel containing 165 mL of glycerol, C3H8O3 (l) (d = 1.26 g/mL), at 24.8°C. The final temperature is 31.1°C. The specific heat of copper is 0.385 J g-1°C-1
One end of a brass bar is maintained at 300°C, while the other end is kept at a constant but lower temperature. What is the temperature of the bar at a point 0.15 m from the hot end
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