Physics Key Equations and Units Flashcards

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1
Q

What is the Equation for Power?

A

Power = Voltage x Current (P = V x l)

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2
Q

What is the Equation for Voltage?

A

Voltage = Current x Resistance (V = I x R)

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3
Q

What is the equation for Charge?

A

Charge = Current x Time (Q = I x T)

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4
Q

What is the equation for Energy?

A

Energy = Voltage x Charge (E = V x Q)

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5
Q

What is the other equation for Energy?

A

Energy = Voltage x Current x Time (E = V x I x T)

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6
Q

What is the Transformer Equation?

A

Primary Voltage/ = Number of Turns on Primary Coil/

Secondary Voltage= Number Turns on Secondary Coil

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7
Q

What is the Equation for Total Cost?

A

Number of Units x Cost Per Unit

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8
Q

What is the Equation for Efficiency (%) ?

A

(Useful Energy Out ÷ Total Energy in) x 100

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9
Q

What is the equation for GPE?

A

GPE = mgh or GPE= Mass x Gravity x Height

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10
Q

What is the equation of Kinetic Energy (KE)?

A

Kinetic Energy = 0.5 x Mass x Velocity² or KE = 1/2mv²

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11
Q

What is the equation for Work Done (W)?

A

Work Done = Force x Distance or W= F x d

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12
Q

What does Work Done also equal?

A

Work Done is also equal to Energy transferred

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13
Q

What is the equation for Power?

A

Power = Energy / Time or P = E / t

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14
Q

What is the Equation for Energy (relative to Specific Heat Capacity)?

A

Energy = Specific Heat Capacity x Mass x Change in Temperature or E = c x m x θ

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15
Q

What is the Equation for Speed?

A

Speed = Distance ÷ Time or s = d ÷ t

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16
Q

What is the equation for Acceleration?

A

Acceleration = Change in Velocity ÷ Time or a = (v-u) ÷ t

17
Q

What is the equation for Force?

A

Force = Mass x Acceleration or F = m x a

18
Q

What is the equation for Weight?

A

Weight = Mass x Gravity or w = m x g

19
Q

What is the equation for Change in Momentum?

A

Change in Momentum = Force x Time or (mv - mu) = F x t

20
Q

What is the equation for Momentum?

A

Momentum = Mass x Velocity or p = m x v

21
Q

What is the equation for Density?

A

Density = Mass ÷ Volume or d = m ÷ v

22
Q

What is the equation for Pressure?

A

Pressure = Force ÷ Area or p = F ÷ a

23
Q

What is the equation for Moment?

A

Moment = Force x Perpendicular Distance from Pivot or m = F x d

24
Q

What is the equation for Velocity?

A

Velocity = Frequency x Wavelength or v = f x λ