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A copper pipe with an outer radius of 0.011 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 4.2° C and the temperature of the pipe, at 3.2 m from the faucet, is 23° C. In fourteenminutes, the pipe conducts a total of 251 J of heat to the outdoor faucet from the house interior. Find the inner radius of the pipe. Ignore any water inside the pipe. Step by step please and thanks!
At some point in its orbit, our asteroid is moving with a speed of 20 kilometers per second. Determine the kinetic energy of the asteroid
As you sit facing your computer screen, electrons are directed from a source at the back of the computer toward you and are deflected by a magnetic field. Which direction must the magnetic field be oriented in order to direct the electrons to the ..
A motorcycle has a constant speed of 25.0 m/s as it passes over the top of a hill whose radius of curvature is 118 m, Find the centripetal force that acts on the cycle
Determine the position q1 of the image formed by the first converging lens.
A moon orbits a planet because of the gravitational force between them. Similarly, each body also experiences a tidal force due to gravity. Consider how the magnitude of the tidal force changes as distance between a planet and moon varies.
A charge q = +929 ?C is uniformly distributed on a thin nonconducting ring of mass m = 0.60 g and radius r = 2.60 cm. What is the final angular velocity of the ring
The radius of the moon is 1.74 × 106 m, the radius of the sun is 6.96 × 108 m, the average moon-earth distance is 3.84 × 108 m, and the average sun-earth distance is 1.496 × 1011 m. What is the apparent angle the diameter of the moon subtends, ..
A dockworker applies a constant horizontal force of 84.0\({\rm N}\) to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 12.5\({\rm m}\) in a time 4.80\({\rm s}\)
A car goes round a flat curve at a speed of 32 ms-1. If the radius of the curve is 200 m, find the minimum value for the coefficient of friction so that the car can go around the curve without skidding.
A high-voltage transmission line with a resistance of 0.30 /km carries a current of 1050 A, What is the power loss due to resistance in the line
A 1.80 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats.
a field (parallel to the axis of the coil) with a magnitude given by B(t) = (4.0 + 3.0t2) T, where t is in s. What is the value of the induced current in the wire at t=3.5 s
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