physics Flashcards
1
Q
kinetic energy
A
kinetic energy (J) = 1/2 x mass (kg) x speed 2 (s)
2
Q
gravitational potential energy
A
GPE (J) = mass (kg) x gfs (N/kg) x height (m)
3
Q
work done
A
work done (J) = force (N) x distance (m)
4
Q
weight
A
weight (N) = mass (kg) x gfs (N/kg)
5
Q
charge
A
charge (C) = current (A) x time (s)
6
Q
power 1
A
power (N) = energy (J) / time (s)
7
Q
efficiency
A
efficiency = useful energy / total input energy x 100
8
Q
potential difference
A
potential difference (V) = current (A) x resistance (Ohms)
9
Q
energy transferred
A
energy transferred (J) = potential difference (V) x charge (C)
10
Q
power 2
A
power (N) = current (A) x potential difference (V)
11
Q
power 3
A
power (N) = current 2 (A) x resistance (Ohms)
12
Q
density
A
density (kg/m3) = mass (kg) / volume (m3)
