What does U stand for in physics?

A string is stretching a distance of 3.5 meters and it is vibrated at one end of it with a frequency of 60 Hz. A standing wav...

Where can I find a list of the different types of engineering and physical scinces?

Which has a greater electric resistance: electric conductors or electric insulators? WHY? Please answer, thanks :)

A boy tosses a coin straight up to 2.8 m. Suppose the height when the coin leaves his hand is 1.4 m. What was the initial spe...

not symbols used in alchemy, but a symbol which stands for "alchemy"

how can we recognize physical and chemical changes (for science lab please help!)

what are the properties of physical and chemical changes individually

Just a question to get your brain flowing.. Can anyone tell me what pV=k stand for??

I know what D.N.A is but I have NO idea what it stands for. Thank you.

Can anyone show me how to re-arrange this physics formulae? s=ut+½at² I want 't' as the subject of the formulae. Cheers.