(II) The 1.20-kg head of a hammer has a speed of 7.5 m/sjust before it strikes a nail (Fig. 14–17) and is brought to rest.Estimate the temperature rise of a14-g iron nail generated byeight such hammer blowsdone in quick succession.Assume the nail absorbsall the energy.FIGURE 14–17Problem 19.

Mass of the hammer, M = 1.20 kg Initial velocity of the hammer, vi = 7.5 m/s Final velocity of the…

Answered: (II) The 1.20-kg head of a hammer has a…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 71P: Repeat the preceding problem, assuming the water is in a glass beaker with a mass of 0.200 kg, which...

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A physicist makes a cup of instant coffee and notices that, as the coffee cools, its level drops 3.00 mm in the glass cup. Show that this decrease cannot be due to thermal contraction by calculating the decrease in level if the 350 cm3 of coffee is in a 7.00-cm-diameter cup and decreases in temperature from 95.0 to 45.0 . (Most of the drop in level is actually due to escaping bubbles of air.)
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A sealed room has a volume of 24 m3. It's filled with air, which may be assumed to be diatomic, at a temperature of 24 and a pressure of 9.83104 Pa. A 1.00-kg block of ice at its melting point is placed in the room. Assume the walls of the room transfer no heat. What is the equilibrium temperature?
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Nuclear fusion, the energy solute of Sun, hydrogen bombs, and fusion reactors, occurs much more readily when the average kinetic energy of the atoms is high—that is, at high temperatures. Suppose you want the atoms in your fusion experiment to have average kinetic energies of 6.41014 J . What temperature is needed?
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Repeat the preceding problem, assuming the water is in a glass beaker with a mass of 0.200 kg, which in tum is in a calorimeter. The beaker is initially at the same temperature as the water. Before doing the problem, should the answer be higher or lower than the preceding answer? Comparing the mass and specific heat of the beaker to those of the water, do you think the beaker will make much difference?

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