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A 50.kg sled is subject to a net force of 20N pushing in the direction of the sled's motion as it is over a horizontal surface for a distance of 11m after having started from rest. At this point the sled is released as it starts down a 10 degree incline. The snow is not very deep, and the sled stops after having moved an addictional 35m. What is the work done by friction while the sled is on the incline?
A simple pendulum 2.0m in length, is released with a push when the support string at an angle of 25 degrees from the vertical. If the initial speed of the suspended mass is 1.2 m/s when at the release point, What is the speed at the bottom of the swing? (g=9.8)
A carbon dioxide laser is an infrared laser. A CO2 laser with a cavity length of 53.00 cm oscillates in the m=100,000 mode. What is the wavelength of the laser beam
An immersible heater coil is to be designed to heat an insulated container with 4 liters of distilled water from 20 degrees to 50 degrees C in less than 30 minutes. what is the resistance of the heating coil
A generator is connected to a resistor and a 0.032-H inductor in series. Determine the resistance of the resistor in this circuit
An airplane with a mass of 2.6*10^6 kg. has the air flow past the lower surface of the wings at 100 m/s. If the wings have a surface area of 1200 m2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the ai..
A steel wire is used to stretch a spring. An oscillating magnetic field drives the steel wire back and forth. what stretch of the spring produces a standing wave with six nodes
An ideal gas at 12.4 °C and a pressure of 1.41 x 105 Pa occupies a volume of 2.85 m3. How many moles of gas are present
An exhaust tube from a steam generator is submerged in a large container of cool water. what is the change of entropy (in J/deg) of the steam
A 0.30 m 0.30 m 0.10 m block is suspended from a wire and is completely under water. What buoyant force acts on the block
A 46.7 g ball of copper has a net charge of 1.5 µC. What fraction of the copper's electrons have been removed
An inductor has an inductance of 0.069 H. The voltage across this inductor is 56 V, What is the current in the inductor
The catapult on an aircraft carrier can take an aircraft from 0 to 192 mph in 12 seconds, at which time the aircraft launches
A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potential due to this sphere are true?
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