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A carpenter is driving a nail into a board. The 1.25 kg hammer moves at 8.85 m/s when it strikes the nail. Assume half the kinetic energy is transformed into heat in the 15.0 g steel nail and does not flow out. The nail is 3.00 cm long. The specific heat of steel is 448 J/(kg K), and the thermal expansion coefficient is 12x10^-6 K^-1.
A) What is the increase in temperature of the nail after 3 blows from the hammer?
B) What is the change in length of the nail?
calculate the net percent value of these costs and benefits of an information system. Also calculate the overall return on investment of the project and then percent a break even analysis.
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The bones of a saber-toothed tiger are found to have an activity per gram of carbon that is 14.70 of what would be found in a similar live animal. How old are these bones.
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