David Sang and Darrell Hamilton Solutions for Chapter: Thermal Energy Transfers, Exercise 3: Exercise 11.3
David Sang Physics Solutions for Exercise - David Sang and Darrell Hamilton Solutions for Chapter: Thermal Energy Transfers, Exercise 3: Exercise 11.3
Attempt the practice questions on Chapter 11: Thermal Energy Transfers, Exercise 3: Exercise 11.3 with hints and solutions to strengthen your understanding. Physics for Cambridge IGCSE workbook solutions are prepared by Experienced Embibe Experts.
Questions from David Sang and Darrell Hamilton Solutions for Chapter: Thermal Energy Transfers, Exercise 3: Exercise 11.3 with Hints & Solutions
Explain why energy can reach us from the Sun by radiation but not by conduction or convection.
Infrared radiation may be absorbed when it reaches the surface of an object. Describe the surface of an object that is a good absorber of infrared radiation.
What effect does infrared radiation have on an object that absorbs it?
Explain why a cold object warms up and a warm object cools in the same room at the same time, in terms of exchange of infrared radiation.
An ice cube taken from the freezer will rise in temperature, but when it reaches room temperature, it will remain at this temperature. Explain why this happens.
Imagine you've just made a cup of coffee when someone phones you. You know this conversation will take some time. Using your knowledge of thermal radiation and specific heat capacity, decide, and then explain, whether you should put your milk in before you answer the phone or after, so that the coffee is hottest when you drink it.
The heat sink around the processor in a computer is often piece of aluminium. It is needed to remove thermal energy from the processor whilst the processor is in operation. State and explain two design features that make it an effective emitter of thermal radiation, to allow the processor to remain cool enough to function properly.
Explain why gases such as carbon dioxide and methane produce global warming.
