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Aluminum conducts heat twice as well as brass. A brass rod isconnected to an aluminum rod of the same length and radius. Thefree end of the aluminum rod is heated to a 200oC while the freeend of the brass rod is cooled to 0oC. If we can neglect heat lossto the environment, what is the temperature at where the two metals meet?
An object of mass 2.98 kg, moving with an initial velocity of 4.97 m/s, collides with and sticks to an object of mass 2.54 kg with an initial velocity of -3.92 m/s
a very thin circular disk of radius r 17.00 cm has charge q 10.00 mc uniformly distributed on its surface. the disk
Find the induced current I in the resistor. A rolling axle, 1.30 m long, is pushed along horizontal rails at a constant speed v=2.91 m/s. A resistor R=0.475Ω is connected to the rails at points a and b, directly opposite from each other.
Calculate the length of a pipe that has a fundamental frequency of 694 Hz. (Take the speed of sound in air to be 343 m/s.)
Consider three ants each clinging for dear life to the top surface of an ordinary compact disc and not moving with respect to the labelling. The ants are at distances 3, 4, and 5 cm away from the axis of rotation of the CD which is spinning at a cons..
The Big Bang theory states that the beginning of the universe was accompanied by a huge burst of photons. Calculate the peak wavelength of this radiation
Water flows into a bucket at the rate of 0.0005 m^3 / s. Thebuckets has a hole in the bottom of area 2.5 square cm. How high above the bottom of the bucket will the water rise
Estimate the number of breaths taken by a human being during an average lifetime
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. What is the centripetal acceleration of the ball at 8.28 rev/s
A high-speed photograph of a club hitting a golf ball. The club was in contact with a ball, initially at rest, for about 0.0028s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 1.8 102 ft/s, find out the average forc..
To find out if the ball clears the crossbar, what is its height with respect to the crossbar when it reaches the plane of the crossbar?
A sample of an unknown material appears to weigh 280 N in air and 180 N when immersed in alcohol of specific gravity 0.700. What is the density of the material
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