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A 20-m long steel wire (cross-section 1.0 cm^2, Young's modulus 2.0 ´ 10^11 N/m^2), is subjected to a load of 25 000 N. How much will the wire stretch under the load?
Two relativistic rockets move toward each other. As seen by an observer on earth, rocket A, of proper length 500m, travels with a speed of .8c while rocket B, of proper length 1000m travels with a speed of .6c.
What does it means when I say that a light truck and a heavy truck have the same momentum, What is renewable energy
A cylindrical storage tank has a radius of 1.22 m. When filled to a height of 3.71 m, it holda 14 300 kg of a liquid industrial solvent.
A rectangular block of glass is totally immersed in water (n = 1.33). What is the refractive index of the glass
A 900 kg car travelling east at 15 m/s collides with 750 kg travelling north at 20 m/s. what is the speed of the wreckage
One mole of an ideal gas does 2 600 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm, Determine the initial volume of the gas
A circular saw blade 0.250m in diameter starts from rest. In 7.50s , it reaches an angular velocity of 140rad/s with constant angular acceleration. Find the angular acceleration and the angle
A series AC circuit contains a resistor, an inductor of 220 mH, a capacitor of 6.00 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. Calculate the capacitive reactance
A diver springs upward from a board that is 2.95 meters above the water. At the instant she contacts the water her speed is 8.53 m/s, Determine her initial velocity
A circuit contains two elements, but it is not known if they are L, R or C. The current in this circuit when connected to a 9.30×101 V, What is the power dissipated in the circuit
The small currents in axons corresponding to nerve impulses produce measurable magnetic fields. What is the strength of the field at a distance of 1.2mm
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. What is the average speed of the bicyclist for the trip
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