Equations for Nov mocks Flashcards
1
Q
Average speed(m/s) =
A
distance (m) / time(s)
2
Q
Acceleration (m/s2) =
A
change in velocity (m/s) / time taken (s)
3
Q
Force (N) =
A
mass (kg) x acceleration (m/s2)
4
Q
Weight (N) =
A
mass (kg) x gravitational field strength (N/kg)
5
Q
(electrical) power (W) =
A
current (A) x voltage (V)
6
Q
(Electricity) energy transferred (J) =
A
current (A) x time (s) x voltage (V)
7
Q
Voltage (V) =
A
current (A) x resistance (ohms)
8
Q
Charge (C) =
A
current (A) x time (s)
9
Q
Wave speed (m/s) =
A
wavelength (m) x frequency (Hz)
10
Q
Frequency (Hz) =
A
1/ time period (s)
11
Q
refractive index =
A
sin i/ sin r
12
Q
sin c =
A
1 / refractive index
1/n
13
Q
input voltage/ output voltage =
A
primary turns/ secondary turns
14
Q
input power =
A
output power
15
Q
voltage primary x current primary =
A
voltage secondary x current secondary
