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A resistor is formed by joining two cylindrical pieces of material at their ends. The two cylinders both have a radius of 1mm. Material 1 has a conductivity of 1.2 x10^4 S/m and material 2 has a conductivity of 1.4 x 10^4 S/m. Piece 1 is 6cm long and piece 2 is 8cm long. A (perfect) 9V battery is attached across the two outer ends.
Find the magnitude of the electric field and current density in both pieces.
A 8150 kg sailboat is moving through the waters of the Atlantic. Initially, the boat is traveling at 30 mph, 17 degrees East of North. What is the force of the wind acting on the boat
After the first spring compresses a distance of 33cm, second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 53.0 cm after first contacting the two-spring system. Find the car's initial spee..
A copy of The History of the Decline and Fall of the Roman Empire by Edward Gibbon lies exactly in the middle of an otherwise empty 6.1m long bookshelf in Robarts Library. What is the speed at which the librarian raised the shelf
define the magnitude of the torque on the dipole.
An electronic device dissipating 30 W has a mass of 20g and a specific heat of 850 J/kgoC. The device is lightly used, and it is on for 5 min and then off for several hours, throughout which it cools to the ambient temperature of 25 o C.
The decay of a fictitious nucleus is accompanied by the emission of a gamma ray with wavelength 2.48*10-2 nm. What is the difference between these two levels
The solution to Bernoulli's equation, The construction of a flat rectangular roof (3.9 m x 4.3 m) allows it to withstand a maximum net outward force of 20050 N.
two blocks of mass m1 and m2 approach each other on a horizontal table with the same constant speed, Vo, as measured by a laboratory observer. Determine the ratio of the two masses m1/m2
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
Density is the ratio of an object;s mass to its volume. Would you except density to be a vector or a sdcalar quanity? Explain.
The electric field between two equal but opposite point charges, at a point four-ninth the distance from the negative charge to the positive charge, is 4.39*10
A cargo plane in flight lost a package because somebody forgot to close the rear cargo doors. You are on the team of safety experts trying to analyze what happened, Calculate the time at which the package fell off the back ramp
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