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During a phase change, a substance receives or gives away heat. However, the temperature stays constant, since the energy is not used to increase the kinetic energy of the constituent molecules of the sub...
What do we know about fossil fuels?
We know they have a high energy density upon combustion, hence why we've combusted them since the beginning of the industrial revolution to increase economic gro...
To create a free body diagram, first you need to identify a body you are intrested in. Do you have it ? Great! Now lets draw this body isolated. I mean you don't want to include any object in its surrodin...
The two forces acting on the object are weight due to gravity pulling the object towards earth, and drag resisting this motion. When the object is first released, drag is small as velocity is low, so the ...
its tempting when we're given a length in cm - let's use a radius for example - to simply square the number of cm. However this can lead you into traps. Take a circle with radius 5cm. We know that A=piLMAnswered by Lauren M. • Physics tutor2337 Views
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