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Description and Tags

Geography

9th

23 Terms

1

Weight (w)

Mass x gravitational field strength (m g)

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2

Work done (W)

force (F) x distance (along the line of action of the force)

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3

Force applied to a spring (F)

Spring constant x extension (k e)

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4

moment of a force (M)

Force x distance (normal to the direction of the force) (F d)

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5

Pressure (P)

force normal to a surface (F) divided by the area of that surface (a)

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6

Distance travelled (S)

Speed (v) x time (t)

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7

acceleration (a)

change in velocity (Δ v)/time taken (t)

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8

resultant force (F)

mass (m) x acceleration (a)

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9

momentum (p)

mass (m) x velocity (v)

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10

Kinetic energy (E,K)

0.5 (1/2) x mass (m)x speed2 (v2)

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11

gravitational potential energy (Ep)

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

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12

power (P) (1)

energy (E)/time(t)

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13

power (P) (2)

work done(w)/time(t)

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14

Efficiency (2)

Useful power output / total power input

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15

Efficiency (1)

Useful output energy transfer / total input energy transfer

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16

wave speed (v)

frequency (f) x wavelength (λ)

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17

charge flow (Q)

Current (I) x time (t)

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18

Potential difference(v)

current (I)x resistance(R)

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19

Power (P) (1)

potential difference (V) x current (I)

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20

Power (P) (2)

current2 (I2)x resistance(R)

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21

energy transferred (E) (1)

Power (P) x time (t)

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22

Energy transferred (E) (2)

charge flow (Q) x potential difference (V)

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23

Density (p)

mass (m) / volume (v)

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