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A 5.0 x 102 Newton weight is hung from the end of a wire of cross-sectional area 0.010 cm2. The wire stretches from its original length of 200.0 centimeter to 200.50 centimeter.
a) Compute the stress on the wire?
b) Compute what is the elongation strain on the wire?
c) Compute the Young's modulus of the wire?
A bar of lead (bar A) is in thermal contact with a bar of silver (bar B) of the same length and area, Find the temperature at the junction when the energy flow reaches a steady state
Tom is driving at 45mph toward a grade crossing, and he is at 800ft from the garde crossing. There is no gate at this grade. Tom make a decisoin to try to beat an upcoming train, which is at 1000ft from the crossing and moving at 40mph when Tom se..
A 1360 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960 N crate hangs from the far end of the beam.
Starting from rest, your friend dives from a high cliff into a deep lake below, yelling in excitement at the thrill of free-fall on her way down. How long has your friend been in the air when she emits the yell whose frequency shift you hear
Describe how work is done when you plug a equipment into the out let in your house. How the electric company know how much electricity you have utilized? List some equipment that uses lots of electricity. List equipment that uses very little electric..
Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. compute the index of refraction for violet light in plastic
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up, How much power does the battery deliver to the circuit
A plane lands with a speed of 51.0m/s. Each wheel of the plane has a radius of 1.25 meter and a moment of inertia of 110kg•m2. Find the coefficient of kinetic friction between runway and wheels
A short mild steel column with fixed ends has a cross section of 100mm by 50mm. Assuming a safety factor of 6 calculate the load that it can safely support?
Some cordless telephones utilize radio waves with a frequency near 900 MHz to transmit to their "base station." What is the wavelength of these waves?
A proton enters a uniform 0.2T magnetic field at right angles. What is the frequency of the proton's subsequent circular orbit
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
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