Overall Equations Revision

Question 1

What is the Equation of Power?

Answer 1

Power= V x I (Voltage x Current)
W= Volts x Amps

Question 2

What is the Equation of Voltage?

Answer 2

V= I x R (Current x Resisitance)
Volts = Amps x Ohms

Question 3

What is the Equation of Total Cost?

Answer 3

Total cost = number of units x cost per unit

Question 4

What is the Equation Of GPE (Gravitational Potential Energy)?

Answer 4

GPE = mgh ( Gravitational Potential Energy = mass x gravity x height)
Kilograms x Newtons x Height

Question 5

What is the Equation of Kinetic Energy (KE)?

Answer 5

KE = 1/3mv2 ( kinetic Energy = 0.5 x mass x velocity2)

0.5 x Kilograms x Meters per second2

Question 6

What is the Equation of Work done (W)?

Answer 6

W = FxD ( Work done = Force x distance)

Work done = Newtons x meters

Question 7

Why is Energy Transfered and Work done the same (W)?

Answer 7

W= E (Work done = Energy Transferred)

Question 8

What is the Equation of Power (P)?

Answer 8

P = E/t (Power/time)
Watts = Energy/Seconds

Question 9

What is the Equation Of Speed (s)?

Answer 9

S= d/t (speed = distance/time)

meters per second = meters/seconds

Question 10

What is the Equation Of Acceleration (a)?

Answer 10

a = (v-u) /t (Acceleration = change in velocity/time)

Meters per second= change in Meters per second/seconds

Question 11

What is the Equation of Weight (w)?

Answer 11

W = m x g ( Weight =mass x gravity)
Newtons= Kilograms x Newtons

Question 12

What is the Equation of Wave Speed (v)?

Answer 12

V=f x λ (wave speed = frequency x wavelength

M/s= Hertz x meters

Question 13

What is the Equation of Force applied (F)?

Answer 13

F = k x e (Force applied = spring constant x extension)

Newtons applied = spring constant x extension