Erstellt von Jawad Karim
vor mehr als 10 Jahre
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Frage | Antworten |
How many energy types are there? | 7 |
What are they? | Kinetic Heat Electrical Light GPE Chemical Elastic Nuclear |
What is the law of conservation? | Energy can never be created or destroyed. It is only CONVERTED to different forms |
GPE increases with... | height |
KE increases with... | speed |
Electrical 200J Input Light 100J Output Sound and Light? | 50J each |
How do you calculate efficiency? | Useful Energy Output divided by Total Energy Input all multiplied by 100% (for a percentage) |
What is a TV designed to do? | Transfer electrical energy into Light and Sound energy |
So why do we get heat energy too? | Because that energy is wasted. |
What is another name for an electrical generator? | A Dynamo. |
What is the formula for power? | Efficiency divide by Total Input |
How do you calculate GPE energy? | mXgXh m=mass g= gravitational field strength h=height |
How do you work out Energy? | Energy= power X time |
What is a Watt? | A measure of Joules per seconds. J/s |
What is a Kilo-Watt? | A thousand of these.... so-called Watts |
There are two measures for Energy, power and time. What are they? | E=p X t (J)=(w) X (s) and... (KWh)=(Kw) X (h) |
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