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A 250 kg load is hung on a wire of lenght 4.5 m and cross sectional area 3.8*10^-5 m^2, What is its increase in lenght? The acceleration of gravity is 9.8m/s^2 and Youngs modulus is 8.2*10^10 N/m^2. Answer in units of mm
A high-voltage transmission line with a resistance of 0.335 ?/km carries a current of 1.45 kA, What fraction of the transmitted power does this loss represent
You have been visiting a distant planet. Your measurements have determined that the planet's mass is two times that of earth but the free-fall acceleration at the surface is only one-fourth as large. What is the planet's radius
A wire is 1.4 m long and 1.3 mm2 in cross-sectional area. It carries a current of 5.8 A, Calculate the conductivity of the material of which this wire is made
What is amplitude of the subsequent oscillations
q1. a 4.00 x 100 g glass coffee cup is 22.0 c at room temperature. it is next plunged into hot dishwater at the
Two long parallel wires are separated by 6.63 cm and carry currents 2.69 A and 3.67 A. Discover the magnitude of the magnetic force that acts on a 3.07-m length of either wire.
Determine the magnitude of the angular momentum of the system . While the mass is rotating about the peg with angular velocity ω0, it is struck by a hammer that provides a small impulse directed inward toward the peg.
A coin placed on a turntable rotating at 36.3 rev/min will stay there if its center is placed no further than 10.0 cm from the axis of rotation. What is the maximum distance the center of the coin can be placed from the axis if the turntable rotates ..
You and your friends are doing physics experiments on a frozen pond that serves as a frictionless, horizontal surface. What was the speed of each person before the collision
The transmitting tower of a TV station is held upright by guy wires that extend from the top of the tower to the ground. The force along the guy wires can be resolved into two perpendicular compo-nents. Which one is larger?
One of the 1000 kg car moves west at 40 m/s , while the second moves east from the same starting point at a constant velocity of 30 m/s. What is the momentum
A 3.0kg block rests on a tabletop. A 6.00 g bullet moving horizontally with a speed of 180 m/s is shot into the block and sticks in it. Find the speed of block just after full impact
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