Equations

Question 1

State the equation linking speed, distance and time.

Answer 1

Distance = speed x time

Question 2

State the equation linking moment, force and distance.

Answer 2

Moment = force x distance

Question 3

State the equation linking voltage , current and resistance.

Answer 3

Voltage = current x resistance
V = I x R

Question 4

State the equation linking power, current and voltage.

Answer 4

Power = current x voltage
P = I x V

Question 5

State the equation linking energy transferred, power and time.

Answer 5

Energy transferred = power x time
E = p x t

Question 6

State the equation linking waves speed, frequency, wave length.

Answer 6

Wave speed = frequency x wave length

Question 7

State the equation linking refractive index , angles of incidence and refraction.

Answer 7

Angle of incidence = refractive index x angle of refraction
n = sin (i) / sin (r)

Question 8

State the equation linking work done, force and distance.

Answer 8

Work done = force x distance
W = f x d

Question 9

State the equation for kinetic energy.

Answer 9

KE = 1/2 m x v squared

Question 10

State the equation for gravitational potential energy

Answer 10

GPE = m x gravitational field strength x height.

Question 11

State the value of gravitational field strength on earth, g

Answer 11

10 N/Kg

Question 12

State the equation for critical angle

Answer 12

Sin (c) = 1/ refractive index.