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Physics equations Flashcards

0
Q

Equation for acceleration

A

Acceleration = change in velocity / time taken

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1
Q

The equation for average speed

A

Average speed = total distance travelled \ total time taken

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2
Q

Equation for force

A

Force = mass * acceleration

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3
Q

Equation for weight

A

Weight = mass * gravitational field strength

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4
Q

Equation for momentum

A

Momentum = mass * velocity

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5
Q

Equation for moment

A

Moment = force * perpendicular distance from pivot

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6
Q

Equation for power

A

Power = current * voltage

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7
Q

Equation for energy

A

Energy = power * time

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8
Q

Equation for current in amps

A

Current in amps = change in coulombs / time in seconds

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9
Q

Equation for voltage

A

Voltage = current * resistance

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10
Q

Equation for wave speed

A

Wave speed = frequency * wavelength

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11
Q

Law of reflection

A

The angle of incidence = the angle of reflection

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12
Q

The law of refraction

A

Refractive index = sin I / sin r

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13
Q

Equation for efficiency

A

Efficiency = useful energy output from the system / total energy input to the system

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14
Q

Equation for work

A

Work = force * distance

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15
Q

Equation for gpe

A

Gpe = mass * gravitational field strength * hight

16
Q

Equation for ke

A

Ke = 1/2*mass * speed2

17
Q

Equation for work done

A

Work done = power * time

18
Q

Equation for density

A

Density = mass / volume

19
Q

Equation for pressure

A

Pressure = force / area

20
Q

Equation for pressure difference

A

Pressure difference in pa = hight in m * density in kg/m3 * gravitational field strength in n/kg

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