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An 80 centimeter long wire is made by welding a 2.30 mm diameter, 20 centimeter long copper wire to a 2.30 mm diameter, 60 centimeter long iron wire. Determine the resistance of the composite wire in milliohm?
In a cloud chamber experiment, a proton enters a uniform 0.320 {\rm T} magnetic field directed perpendicular to its motion. You measure the proton's path on aphotograph and find that it follows a circular arc of radius 6.06 {\rm cm}
A stretched string fixed at each end has a mass of 49.0 g and a length of 8.60 m. The tension in the string is 49.0 N. What is the vibration frequency for this harmonic
A girl is using a rope to pull a box that has mass of 35kg across a level surface with constant velocity. What is the normal force of the floor on the box
Two charges q1 = ?3.20 nC and q2 = +8.90 nC are at a distance of 1.20 µm from each other, What is the kinetic energy of the charge q2 when it is 0.340 µm from q1
A mass-spring system oscillates with an amplitude of 4.40 cm. If the spring constant is 237 N/m and the mass is 411 g, Determine the maximum speed of the object
A 1.0-cm-tall object is 7.5 cm in front of a diverging lens that has a 10 cm focal length. Determine the image height by making measurements on your diagram
A compass originally points North; at this location the horizontal component of the Earth's magnetic field has a magnitude of 2e-5 T. A bar magnet is aligned East-West, pointing at the center of the compass.
A transmission line is made of a core of copper surrounded by a concentric circular sheath of steel to give it strength. The copper core is 1.0 cm in diameter and the tightly fitting sheath has an outer diameter of 2.0 cm.
if an electron is confined to a region of size 35.2 nm, what is the minimum possible uncertainty in its momentum
A stretched string fixed at each end has a mass of 40g and alength of 8.00m. The tension in the string is 49.N, What is the vibration frequency for this harmonic
We wish to maintain a pattern with a given number of loops and a fixed given frequency, If we reduce the density of the string
A cannon fires a cannonball from the top of a wall at a speed of 91.05 m/s and an angle of 31.18 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
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