Formulas Flashcards

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1
Q

What is the formula for average speed?

A

Average speed= total distance/ total time

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2
Q

What is the formula for acceleration?

A

Acceleration= change in velocity/ time

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3
Q

What does the area under the speed-time graph stand for?

A

Total distance travelled

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4
Q

What is the formula for gravitational field strength?

A

Gravitational field strength= force/ mass

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5
Q

What is the formula for weight?

A

Weight= mass x gravitational field strength

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6
Q

What is the formula for density?

A

Density= mass/ volume

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7
Q

What is the formula for pressure?

A

Pressure= force/ area

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8
Q

What is the formula for resultant force?

A

Resultant force= mass x acceleration

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9
Q

What is the formula for torque (moment of force)?

A

Torque= force x perpendicular distance

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10
Q

What is the formula for kinetic energy?

A

Kinetic energy= 1/2 x mass x velocity^2

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11
Q

What is the formula for gravitational potential energy?

A

GPE= mass x gravitational field x height

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12
Q

What is the formula for work done?

A

Work done= force x distance moved (in the same direction)

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13
Q

What is the formula for power?

A

Power= energy transferred/ time taken = work done/ time

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14
Q

What is the formula for speed of wave?

A

Speed of wave= frequency x wavelength

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15
Q

What is the formula for resistance?

A

Resistance= potential difference/ current

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16
Q

What is the formula for effective resistance in a parallel circuit?

A

EV in parallel circuit= 1/R1 + 1/R2…….

17
Q

What is the formula for effective resistance in a series circuit?

A

EV in series circuit= R1 + R2

18
Q

What is the formula for power?

A

Power= current x resistance

19
Q

What is the formula for energy?

A

Energy= power x time

20
Q

What is the formula for charge?

A

Charge= current x time

21
Q

What is the formula for speed?

A

Speed= distance travelled/ time taken

22
Q

What is the formula for velocity?

A

Velocity= displacement/ time taken

23
Q

What is the formula for internal energy?

A

Internal energy= total kinetic energy + total potential energy of the particles

24
Q

What is the formula for frequency?

A

Frequency= 1/time

25
Q

What is the formula for reflective index of a medium using n?

A

N= sin i/ sin r

26
Q

What is the formula for magnification?

A

Magnification= ratio of image height/ object height