Equations Flashcards by Lauren Tracey | Brainscape

Q

How to calculate weight?

A

Mass x gravitational field strength

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Q

How to calculate work done?

A

force x distance

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Q

How to calculate force applied to a spring?

A

spring constant x extension

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Q

How to calculate pressure?

A

force normal to a surface / area of that surface

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Q

How to calculate speed?

A

distance / time

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Q

How to calculate acceleration?

A

change in velocity/ time taken

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Q

How to calculate resultant force?

A

Mass x acceleration

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Q

How to calculate power?

A

energy transferred / time

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Q

How to calulate efficiency?

A

useful output/ total power input

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Q

How to calculate wave speed?

A

frequency x wave length

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Q

How to calculate charge flow?

A

current x time

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Q

How to calculate potential difference?

A

current x resistance or power / curren

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Q

How to calculate density?

A

Mass/volume

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Q

How to calculate power usingcurret?

A

(current)2 x resistance

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Q

How to calculate energy transferred?

A

power x time or charge flow x potential difference

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Q

How to calculate kinetic energy?

A

0.5 x mass x (speed)2