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Three identical train cars, coupled together, are rolling east at 1.6 m/s . A fourth car traveling east at 4.4 m/s catches up with the three and couples to make a four-car train. A moment later, the train cars hit a fifth car that was at rest on the tracks, and it couples to make a five-car train. What is the speed of the five-car train?
The emissivity of tungsten is 0.35. A tungsten sphere of radius 1.5 cm is suspended within a large evacuated enclosure whose walls are at 300 K. What power input is required to maintain the sphere at a temperature of 3000 K
State the maximum height in terms of a, t_1, and/or g. Note that in this problem, g is a positive number equal to the magnitude of the acceleration due to gravity.
Illustrate what is the absolute pressure at a point that is 9.82 cm below the ethyl alcohol-mercury interface?
a wire of mass 5.00 grams and length 1.20 m is stretched with a tension of 36.0 n. waves of frequency 50.0 hz and
In an amusement park water slide, people slide down an essentially frictionless tube. They drop 2.8 m and exit the slide, moving horizontally, What horizontal distance do they travel from the exit point
The magnetic field perpendicular to a single13.2 cm diametercircular loop of copper wire decreases uniformly from .750 T tozero. how much charge moves past a point in the coil during this operation
A player kicks a ball from ground level with an initial velocity of 27.00 m/s at 30 degrees above the horizontal. What is the ball's range to one decimal place
Two ropes are attached to a heavy box to pull it along the floor. One rope applies a force of 438 newtons (N) in a direction due west; the other applies a force of 402N in a direction due south.
jupiter has a mass that is roughly 320 times that of the earth and a radius equal to 11 times that of the earth. What is the acceleration due to gravity on the surface of jupiter
A 13.0-µF capacitor is charged to a potential of 60.0 V and then discharged through a 185-? resistor. How long does it take the capacitor to lose half of its charge
Take the initial direction of motion to be the positive direction. (Indicate the direction of the acceleration by the sign of your reply.)
You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars") toward you, compute the magnitude of the force that you exert on the handle
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