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Showing posts from May, 2022

Thermal energy

By the end of this post, you should be able to:  i. Define thermal energy, heat and temperature.  ii. Demonstrate rate of flow of heat through different materials.  iii. Differentiate methods of heat transfer.  iv. State the application of heat and prevention of heat loss What's Thermal Energy?  It's the internal energy present in a system.  The system must be in a state of thermodynamic equilibrium.  This means it has equal temperature.  What's heat? It is the energy transferred from hot objects to cold objects. Heat flows from hot to cold. What's temperature? It's the degree or intensity of heat present in an object. Thermometer is used to measure temperature.  It is measured in degrees . Rate of flow of heat through different materials Heat is transferred faster in solids Solid>Liquid>Gas Methods of heat transfer Heat can be transferred in 3 ways:  1. Conduction by direct contact  2. Con...

What everyone misses in Steve Jobs keynote speeches

Steve Jobs said their,  iPod gives you “1,000 songs --all in your pocket,” and they don’t say, “10 gigabytes of storage for MP3s.” Be didn't mention features. He didn't say iPod gives you “10 gigabytes of storage for MP3s.” People don't buy features. People buy benefits. People don't buy new beds. People buy good night sleep.  This is what you should do: Never tell people about features of your products. People don't understand features.  Instead, tell them the benefit of your products. Go straight to the point. This can work when you are wooing any woman also.