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Problem: The diameter of a specific copper wire is 8.364 mm, and has a resistivity of 1.72 × 10-8 ??m.
Question: Find the resistance of a 1.2 km length of such wire used for power transmission in ?.
The mean free path of a molecule in a gas is 280 nm. What is the mean free path if the gas temperature is tripled at constant volume?What is the mean free path if the gas temperature is tripled at constant pressure?
What is the highest possible induced emf in the antenna as it moves through the Earth's magnetic field.
Over a certain region of space, the electric potential is given by: V = 3x^2 - 2xy + xyz, Find the expressions for the x, y, and z components of the electric field over this region
A camera takes a perfectly exposed picture when the lens diaphragm is set to f/4 and the shutter speed is 1/250 s, what should the new shutter speed be so that the exposure is still correct
A juggling bag is thrown straight up into the air and is caught 3 s later, What is the initial velocity of the bag
A rectangle measuring 30.0 {rm cm} by 40.0 {rm cm} is located inside a region of a spatially uniform magnetic field of 1.30 T, with the field perpendicular to the plane of the coil. The coil is pulled out at a steady rate of 2.00 {rm{ cm/s}} travelli..
A nonconducting thin layer carries charge with a uniform density of 8.40 µC/cm2. (a) What is the electric field 3.80 cm in front of the wall if 3.80 cm is small compared with the dimensions of the wall? magnitude and direction?
Two metal cubes, one copper and one aluminum, with sides of length a are arranged as shown, find the thermal resistance of each cubeb
Rhea, one of Saturn's moons, has a radius of 765 km and an acceleration due to gravity of 0.278 m/s2 at its surface. Calculate its mass and average density.
How much time elapses between first splash and second splash
Calculate the magnitude of the electric field at one corner of a square 1.43
A copper telephone wire has essentially no sag between poles 34.00 m apart on a winter day when the temperature is -20°C. How much longer is the wire on a summer day.
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