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physics Flashcards

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1
Q

what is the equation for weight?

A

weight = mass x gravitational field strength

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2
Q

what is the equation for work done?

A

work done = force x distance

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3
Q

what is the equation for force applied to a spring ?

A

force applied to a spring = spring constant x extension

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4
Q

what is the equation for moment of force?

A

moment of force = force x distance

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5
Q

what is the equation for pressure?

A

pressure = force normal to a surface
———————————–
area of that surface

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6
Q

what is the equation for distance travelled?

A

distance travelled = speed x time

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7
Q

what is the equation for acceleration?

A

acceleration = change in velocity
—————————-
time taken

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8
Q

what is the equation for resultant force?

A

resultant force = mass x acceleration

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9
Q

what is the word equation for momentum?

A

momentum = mass x velocity

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10
Q

what is the word equation for kinetic energy?

A

kinetic energy = 0.5 x mass x (speed)2

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11
Q

what is the word equation for gravitational potential energy?

A

gravitational potential energy = mass x gravitational field strength x height

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12
Q

what is the word equation for power?

A

power = energy transferred
—————————
time

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13
Q

what is the word equation for power? there are four

A

power = work done
——————-
time

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14
Q

what is the word equation for efficiency?

A

efficiency = useful energy out
————————– ( x 100%)
total energy in

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15
Q

what is the word equation for efficiency? there are two

A

efficiency = useful power out
———————— ( x 100%)
total power in

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16
Q

what is the word equation for wave speed?

A

wave speed = frequency x wavelength

17
Q

what is the word equation for charge flow?

A

charge flow = current x time

18
Q

what is the word equation for potential difference?

A

potential difference = current x resistance

19
Q

what is the word equation for power?

A

power = potential difference x current

20
Q

what is the word equation for power?

A

power = (current)2 x resistance

21
Q

what is the word equation for energy transferred?

A

energy transferred = power x time

22
Q

what is the word equation for energy transferred? there are two

A

energy transferred = change x potential difference

23
Q

what is the word equation for density?

A

density = mass
——–
volume

24
Q

what is the word equation for force?

A

force = change in momentum
——————————–
time taken

25
Q

what is the word equation for period?

A

period = 1
————
frequency

26
Q

what is the word equation for magnification?

A

magnification = image height
——————–
object height

27
Q

what is the word equation for change in thermal energy?

A

change in thermal energy = mass x specific latent heat capacity x temperature change

28
Q

what is the word equation for elastic potential energy?

A

elastic potential energy = 0.5 x spring constant x (extension)2

physics equations (4 decks)

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