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5 kN forces are acting longitudinally on each end of a beam with a cross-sectional area of 100cm2 and an original length of 5m. As a result of such forces, the length of the beam has been reduced by 1 cm. Calculate the stress in the beam and the coefficient of linear expansion.
A sun yacht is a spacecraft with a large sail that is pushed by sunlight. Find the magnitude of the resulting acceleration
A nuclear power plant has a reactor that produces heat at the rateof 750 MW. What is the thermal efficiency of the plant
steel rod (ρ = 7860 kg/m3) has a length of2.55 m. It is bolted at both ends between immobile supports. Find the tension that develops when the rodloses 3490 J of heat
At what temperature is the diameter of the hole equal.
1. a 2.05-nc point charge is 3.61 cm away from a -3.04-nc point charge. what is the magnitude of the electric force
A sound wave with intensity 2.2 10-3 W/m2 is perceived to be modestly loud. Your eardrum is 6.7 mm in diameter. How much energy will be transferred to your eardrum
When the tire surface is rotating at the maximum speed of 12 m/s stone flies out of the tread. The magnitude FN of the normal force that each side of the tread channel exerts on the stone is 1.8 N. suppose that only static friction supplies centripet..
Two electrons in the similar atom have n = 3 and script i = 2. How many quantum numbers are there for the possible states of the atom?
A 5-m length of wire carrying a current of 1.5 Amp is in a magnetic field of 2 T. Determine the magnetic force on the wire if the angle between the wire and the magnetic field is 25o
A 3.7 kg box is sliding down a surface that is inclined downwards by 30° below the horizontal. How much energy of the box has been lost
a car driving on the turnpike accelerates uniformly from 84.0 ft/s (57.3 mph) to 112 ft/s (76.4 mph) in 3.60s. what is the cars acceleration
A beam of light is incident on a glass plate ( = 1.62) in air and the reflected ray is completely polarized. What is the angle of refraction for the beam
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