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A student attempts at home to reproduce the experiment by Joule performed in the mid-nineteenth century. In the student's experiment, a weight takes 20 minutes to fall a distance, z, under gravity whilst pulling on a wire that turns a paddle emersed in a fluid inside an uninsulated copper container (see illustration). The temperature of the fluid is monitored by an accurate thermometer emersed in the fluid. A first temperature reading is taken just before the mass begins to fall and a second temperature reading is taken just after the mass has fallen a distance, z and come to rest. Falling mass rotates paddle. Fluid Rotating paddle Copper How many of the following statements are correct: al The work performed by the falling mass goes solely to raising the internal enerav How many of the following statements are correct: a) The work performed by the falling mass goes solely to raising the internal energy of the wire, which in turn then raises the internal energy of the fluid. b) The mechanical energy of the whole apparatus decreases between the times of the first and second temperature readings. c) The internal energy of the fluid cannot change because the only changes that can occur in the internal energy of a system are those produced by non-mechanical forces. d) The heat that the fluid possesses is increased due to the work done by the paddle on the fluid. e) The thermometer registers a greater temperature change between first and second readings where the student subsequently alters the apparatus to use a smaller paddle such that the same mass (m) falls over the same distance (z) in just 2 minutes. 04 01 13 02 0. 身

A student attempts at home to reproduce the experiment by Joule performed in the mid-nineteenth century. In the student's experiment, a weight takes 20 minutes to fall a distance, z, under gravity whilst pulling on a wire that turns a paddle emersed in a fluid inside an uninsulated copper container (see illustration). The temperature of the fluid is monitored by an accurate thermometer emersed in the fluid. A first temperature reading is taken just before the mass begins to fall and a second temperature reading is taken just after the mass has fallen a distance, z and come to rest. Falling mass rotates paddle. Fluid Rotating paddle Copper How many of the following statements are correct: al The work performed by the falling mass goes solely to raising the internal enerav How many of the following statements are correct: a) The work performed by the falling mass goes solely to raising the internal energy of the wire, which in turn then raises the internal energy of the fluid. b) The mechanical energy of the whole apparatus decreases between the times of the first and second temperature readings. c) The internal energy of the fluid cannot change because the only changes that can occur in the internal energy of a system are those produced by non-mechanical forces. d) The heat that the fluid possesses is increased due to the work done by the paddle on the fluid. e) The thermometer registers a greater temperature change between first and second readings where the student subsequently alters the apparatus to use a smaller paddle such that the same mass (m) falls over the same distance (z) in just 2 minutes. 04 01 13 02 0. 身

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A student attempts at home to reproduce the experiment by Joule performed in the mid-nineteenth century. In the student's experiment, a weight takes 20 minutes to fall a distance, z, under gravity whilst pulling on a wire that turns a paddle emersed in a fluid inside an uninsulated copper container (see illustration). The temperature of the fluid is monitored by an accurate thermometer emersed in the fluid. A first temperature reading is taken just before the mass begins to fall and a second temperature reading is taken just after the mass has fallen a distance, z and come to rest. Falling mass rotates paddle. Fluid Rotating paddle Copper How many of the following statements are correct: al The work performed by the falling mass goes solely to raising the internal enerav
Transcribed Image Text:A student attempts at home to reproduce the experiment by Joule performed in the mid-nineteenth century. In the student's experiment, a weight takes 20 minutes to fall a distance, z, under gravity whilst pulling on a wire that turns a paddle emersed in a fluid inside an uninsulated copper container (see illustration). The temperature of the fluid is monitored by an accurate thermometer emersed in the fluid. A first temperature reading is taken just before the mass begins to fall and a second temperature reading is taken just after the mass has fallen a distance, z and come to rest. Falling mass rotates paddle. Fluid Rotating paddle Copper How many of the following statements are correct: al The work performed by the falling mass goes solely to raising the internal enerav
How many of the following statements are correct: a) The work performed by the falling mass goes solely to raising the internal energy of the wire, which in turn then raises the internal energy of the fluid. b) The mechanical energy of the whole apparatus decreases between the times of the first and second temperature readings. c) The internal energy of the fluid cannot change because the only changes that can occur in the internal energy of a system are those produced by non-mechanical forces. d) The heat that the fluid possesses is increased due to the work done by the paddle on the fluid. e) The thermometer registers a greater temperature change between first and second readings where the student subsequently alters the apparatus to use a smaller paddle such that the same mass (m) falls over the same distance (z) in just 2 minutes. 04 01 13 02 0. 身
Transcribed Image Text:How many of the following statements are correct: a) The work performed by the falling mass goes solely to raising the internal energy of the wire, which in turn then raises the internal energy of the fluid. b) The mechanical energy of the whole apparatus decreases between the times of the first and second temperature readings. c) The internal energy of the fluid cannot change because the only changes that can occur in the internal energy of a system are those produced by non-mechanical forces. d) The heat that the fluid possesses is increased due to the work done by the paddle on the fluid. e) The thermometer registers a greater temperature change between first and second readings where the student subsequently alters the apparatus to use a smaller paddle such that the same mass (m) falls over the same distance (z) in just 2 minutes. 04 01 13 02 0. 身
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