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Physics > Equations > Flashcards

Equations Flashcards

0
Q

What is the equation for average speed?

A

Average speed (v) = distance (d)/time (t)

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1
Q

What is the equation for power?

A

Power (P) = Current (I) x Time (t)

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2
Q

What is the equation for acceleration?

A

Acceleration (a) = change in velocity (v)/time taken (t)

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3
Q

What is the equation for force in relation to acceleration?

A

Force (F) = mass (m) x acceleration (a)

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4
Q

What is the equation for weight?

A

Weight = mass (m) x gravitational field strength (g)

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5
Q

What is the equation for force in terms of momentum?

A

Force (F) = change in momentum (p)/time taken (t)

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6
Q

What is the equation for a moment?

A

Moment = force (F) x perpendicular distance from the pivot (d)

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7
Q

What is the equation for orbital speed?

A

Orbital speed (v) = 2 x pi x radius of orbit (r)/time period (T)

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8
Q

What is the equation for energy?

A

Energy (E) = current (I) x voltage (V) x time (t)

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9
Q

What is the equation for current?

A

Current (I) = charge (Q)/time (t)

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10
Q

What us the equation for voltage in terms of resistance?

A

Voltage (V) = current (I) x resistance (r)

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11
Q

What is the equation for frequency?

A

Frequency (f) = 1/time period (T)

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12
Q

What is the equation for wave speed?

A

Wave speed (v) = wavelength (lambda) x frequency (f)

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13
Q

What is the angle of incidence equal to?

A

The angle of reflection

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14
Q

What is the equation for refractive index?

A

Refractive index (n) = sin(i)/sin(r)

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15
Q

What is the equation for refractive index in terms of critical angle?

A

Refractive index (n) = 1/sin(c)

16
Q

What is the equation for efficiency?

A

Efficiency = (useful energy output/useful energy input) x 100

17
Q

What is the equation for work?

A

Work (W) = force (F) x distance (d)

18
Q

What is the equation for gravitational potential energy?

A

GPE = mass (m) x gravitational field strength (g) x height (h)

19
Q

What is the equation for kinetic energy?

A

KE = 1/2 x mass (m) x velocity^2

20
Q

What is the equation for power?

A

Power (P) = work done (W)/ time taken (t)

21
Q

What is the equation for density?

A

Density (p) = mass (m) x volume (v)

22
Q

What is the equation for pressure?

A

Pressure (P) = force (F)/area (a)

23
Q

What is the equation for pressure difference?

A

Pressure difference (P) = height (h) x density (p) x gravitational field strength (g)

24
Q

What is the equation for Boyle’s law?

A

P1 x V1 = P2 x V2

OR P1/P2 = V2/V1

25
Q

What is the absolute zero equation?

A

P1/T1 = P2/T2

26
Q

What is the equation for a transformer?

A

Input voltage/secondary voltage = primary turns/secondary turns

Physics (3 decks)

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