about heat conduction Task 1: . What happens to the temperature of a well-insulated room, if a heater is left on inside it? Give reasons for your answer.

Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
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8. SAVING ENERGY
ek l: some preliminary questions about heat conduction
. What happens to the temperature of a well-insulated room, if a heater is left on inside it?
Give reasons for your answer.
2 When energy is transmitted down rods of the same material which have the same
temperature difference between their ends, how does the rate of transmission depend on
the lengths of the rods and on diameters?
(a) The rods have the same length, different diameters: which transports energy faster?
(b) The rods have the same diameter, different lengths: which transports energy faster?
3. In experiments to find k for a solid material that is known to be weak conductor, the
specimen used is often in the shape of a thin slab, rather than a long rod. Why is this?
4. You will be using a thin slab in your determination of k of a poorly conducting material.
What measurements will you have to make in order to find "k"?
***
Show your answer to a demonstrator before proceeding.
27
Transcribed Image Text:8. SAVING ENERGY ek l: some preliminary questions about heat conduction . What happens to the temperature of a well-insulated room, if a heater is left on inside it? Give reasons for your answer. 2 When energy is transmitted down rods of the same material which have the same temperature difference between their ends, how does the rate of transmission depend on the lengths of the rods and on diameters? (a) The rods have the same length, different diameters: which transports energy faster? (b) The rods have the same diameter, different lengths: which transports energy faster? 3. In experiments to find k for a solid material that is known to be weak conductor, the specimen used is often in the shape of a thin slab, rather than a long rod. Why is this? 4. You will be using a thin slab in your determination of k of a poorly conducting material. What measurements will you have to make in order to find "k"? *** Show your answer to a demonstrator before proceeding. 27
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