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You hang a floodlamp from the end of a vertical steel wire.Thefloodlamp stretches the wire 0.18 mm and the stress isproportional to the strain. How much would it have stretched
a) if the wire were twice as long?
b) if the wire had the samelength but twice the diameter?
c) for a copper wire of theoriginal length and diameter?
It runs out of fuel at the end of the 4.97 s but does not stop. Explain how high does it rise above the ground?
A parallel-plate capacitor has circular plates of 10.4 cm radius and 1.67 mm separation. Calculate the capacitance in picofarads
You have been given 1.752 g of copper from which you are to fashion a wire whose resistance is 2.519 ohms. What will be the density of the wire you fashion
In an adiabatic centrifugal compressor atmospheric air at 15 degree Celsius is compared to 600kPa pressure. Find the specific compression work and the efficiency of the compressor
What was the angle of the hill. what is the current in the circuit when four lamps are turned on.
What is the current through the 6 ohm resistor?
A skateboarder (whose mass is 57kg) is moving at 3.7m/s at thetop of a 5.1m ramp. Without pushing on the ground, she rolls downto the bottom of the ramp and up the next ramp which is 2.4m tall.There is an effective friction force equal to her weig..
For electrons in a metal, why is the density of states at the Fermi energy approximately equal to the density of free electrons divided by the Fermi energy
An object is in front of a converging lens (f = 0.370 m). The magnification of the lens is m = 3.60. Through what distance should the object be moved
The British gold sovereign coin is an alloy of gold and copper having a total mass of 7.988 g, and is 22-karat gold. (a) Find the mass of gold in the sovereign in kilograms using the fact that the number of karats = 24 (mass of gold)/(total mass)...
find the time rocket reaches the peak height of trajectory.
A wheel 90.0 cm in diameter accelerates uniformly from 235 rpm to 385 rpm in 6s. How far will a point on the edge of the wheel have travelled in this time.
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