Paper 2 Equations

Question 1

Equation linking: weight, mass, gravitational field strength

Answer 1

W (n) = M (kg) x GFS (n/kg)

Question 2

Equation linking: work done, force, distance

Answer 2

WD (j) = F (n) x D (m)

Question 3

Equation linking: force, spring constant, extension

Answer 3

F (n) = SC (n/m) x E (m)

Question 4

Equation linking: elastic potential energy, spring constant and extension

Answer 4

EPE (j) = SC (n/m) x e^2 (m)

Question 5

Equation linking: moment, force, distance

Answer 5

M (nm) = F (n) x D (m)

Question 6

Equation linking: pressure, force, area

Answer 6

P (pa) = F (n) / A (m^2)

Question 7

Equation linking: pressure, height, density, gravitational field strength

Answer 7

P (pa) = H (m) x D (kg/m^3) x GFS (n/kg)

Question 8

Equation linking: distance, speed, time

Answer 8

S (m/s) = D (m) / T (s)

Question 9

Equation linking: Acceleration, change velocity, time

Answer 9

A (m/s^2) = V (m/s) / T (s)

Question 10

Equation linking: force, mass, acceleration

Answer 10

F (n) = M (kg) x A (m/s^2)

Question 11

Equation linking: v, u, a, s

Answer 11

V^2 - U^2 = 2as

Question 12

Equation linking: Momentum, mass, velocity

Answer 12

M (kgm/s) = M (kg) x V (m/s)

Question 13

Equation linking: force, mass, change velocity, change time

Answer 13

F (n) = [M (kg) x V (m/s)] / T (s)

Question 14

Equation linking: Period, Frequency

Answer 14

P = 1 / F (hertz)

Question 15

Equation linking: Velocity, Frequency, wavelength

Answer 15

V (m/s) = F (Hertz) x W (M)

Question 16

Equation linking:magnification, image height, object height

Answer 16

M = I / O

Question 17

Equation linking: Force, magnetic flux density, current, length

Answer 17

F (n) = MFD (t) x C (a) x L (m)

Question 18

Equation Linking: potential difference primary coil, potential difference secondary coil, turns primary coil, turns secondary coil

Answer 18

PD of P / PD of S = T of P / T of S

Question 19

Equation Linking: potential difference secondary coil, potential difference primary coil, current in the secondary, current in the primary

Answer 19

PDofS x PDofP = CinS x CinP

Power output = Power input