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A mass of 50 kg is suspended from a steel wire of diameter 1.0 mmand length 11.2 m. How much will the wire stretch? The Young's modulus for steel is 20e10 N/m^2.
_______cm
A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200N. The cable is perpendicular to the boom and is attached 4.5m from the pivot. What is the utmost load that can be suspended from the end of the boom.
A Carnot heat pump operates between an outdoor temperature of 262 K and an indoor temperature of 293 K. Find its coefficient of performance.
A car crashes into a wall at 25 m/s and is brought to rest in 0.1s. Calculate the average force exerted on a 75-kg test dummy by the air bags
The radius of the hydrogen atom is 0.053 nm. find the Coulomb force between the electron and the proton in the atom
A truck initially going 10m/s slams on the breaks. If the coefficient between the truck's tires and road is %u03BC=0.4, what is the minimum stopping distance of the truck
a lead wire of cross-sectional area 0.980 mm2 is at a temperature of 2.00 k and carries a current of 0.490 a. a find
A force of 25.33 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20 rad/s^2
A certain medical machine emits x-rays with a minimum wavelength of 0.025 nm. One day, the machine has an electrical problem and the voltage applied to the x-ray tube decreases to 80 percent of its normal value. Now what is the minimum x-ray wavel..
Concept Simulation 11.1 reviews the concept that plays the central role in this problem. Find the average blood speed as a constriction in the artery if the constriction reduces the radius by a factor of 4
A three-legged wooden bar stool made out of solid Douglas firhas legs that are 2.5 cm in diameter. When a 70 kg man sits on thestool, by what percent does the length of the legs decrease?
Just as you had done in your lab, imagine that you have a solid uniform disk (same as a uniform cylinder) with a string wound around its rim. What is the angular acceleration of the disk
The loaded cab of an elevator has a mass of 3.0 x 103 kg and moves 176 m upthe shaft in 23 s at constant speed. At what average rate does theforce from the cable do work on the cab
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