Equations: Year 8 Flashcards
1
Q
How do you calculate power?
A
power (w) =
energy (j)
________
time (s)
2
Q
How do you calculate the work done?
A
work done (j) =
force (N) x distance (m)
3
Q
What does the speed, distance, time triangle look like?
A
/ D \
/ S | T \
______
4
Q
How do you calculate pressure?
A
pressure (N/m²) =
force (N)
________
area (m²)
5
Q
How do you calculate the moment (turning force)
A
moment (Nm) =
force (N) x distance from pivot (m)
6
Q
How do you calculate current?
A
current (A) =
potential difference (v)
_________________
resistance (Ω)
7
Q
How do you calculate resistance?
A
resistance (Ω) =
potential difference (v)
_________________
current (A)
8
Q
What does the resistance, potential difference and current triangle look like?
A
/ V \
/ A | R \
______
