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A model-train car of mass 275 gtraveling with a speed of 0.50 m/s links up with another car ofmass 410 g that is initially at rest.
a) What is the speed of the cars immediately after they have linked together?b) Find the initial kinetic energy.c) Find the final kinetic energy.
What would be the final temperature of 100g of 16°C water when 107 g of 40°C iron nails are submerged in it? (The specific heat of iron is 0.12 cal/g °C. Here you must equate the heat gained by the water to the heat lost by the nails.)
an uncharged 1.0-muf capacitor is connected in series with a 23-komega resistor an ideal 7.0-v battery and an open
A jet pack is turned on for 10 seconds and performs 1500 joules of work to move an astronaut in space who was initially at rest. What the power of the jet pack in watts
what is the electrostatic force that acts on this charge. What would be the least speed required for the rest of the trip to arrive in time for the interview.
In a certain electroplating process gold is deposited by using a current of 14.0 A for 19 minutes. How many grams of gold are deposited by this process
A woman on a bridge 97.0 m highsees a raft floating at a constant speed on the river below. Shedrops a stone from rest in an attempt to hit the raft. Find the speed of the raft
The electric field strength just outside the outer conductor of a coaxial cable of outer radius of 0.2cm is E=7200N/C directed inward. find the initial surface charge density of the outer conductor
A 75g lead sinker at 90 degrees celsius is placed in 500 cm^3 of water at 20 degrees celsius. What is the final temperature of the sinker
a rod of length L lies along the x-axis between x=A and x=A+L. The rod has a non-uniform charge density, What is the magnitude of the electric field at the origin
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, Determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 19.4g
The size of an oil container measures 30m in length x 30m in width and a height of 10 m. Estimate the density of the crude oil inside the container
A fountain shoots a jet of water 10 m into the air. The fountainhas a round nozzle of diameter 1.84 cm at ground level, fed by a pump located 6 m belowground through a round pipe of diameter 5.19 cm.
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