Physics core Formulas

Question 1

formula for Average velocity

Answer 1

V= s/t

Average velocity = displacement / time= s/t

Question 2

formula for Average speed

Answer 2

v= d/t

Average speed = distance / time

Question 3

What is the Earths gravitational field strength

Answer 3

9.8 m/s 2

Question 4

formula for gravitational field strength

Answer 4

g = W/m

gravitational field strength = weight / mass

Question 5

Formula for density

Answer 5

ρ = m/v

Density = mass / volume

Question 6

Formula for moment

Answer 6

M = F x d

Moment = Force x perpendicular distance to pivot

Question 7

Formula for work done

Answer 7

W = Fd

Work done = Force x distance moved in the direction of the force

Question 8

Formula for Power

Answer 8

p = W/t or p = ∆E/t

Power = Work done / time or Power = Energy transfer / time

Question 9

Formula for Pressure

Answer 9

p = F/A

Pressure = Force / Area

Question 10

Formula for Wave Speed

Answer 10

v = f x λ

Wave speed = frequency x wavelength

Question 11

Formula for Resistance

Answer 11

R = V / I

Resistance = Potential difference / Current

Question 12

Formula for Electrical Power

Answer 12

p = I x V

Electrical Power = Current x Voltage

Question 13

Formula for Electrical Energy

Answer 13

E = IV x t

Electrical energy = Electrical power x time

Question 14

Formula for a Transformer

Answer 14

Vp/Vs = Np.Ns

Question 15

Protons Charge and mass

Answer 15

Charge +1 Mass 1

Question 16

Neutron Charge and mass

Answer 16

Charge 0 Mass 1

Question 17

Electron Charge and mass

Answer 17

Charge -1 Mass 0