equations

Question 1

what is the symbol equatioon for work done

Answer 1

W = F s
W - work done J
F - force N
s - distance m

Question 2

what is the equation for weight

Answer 2

W = m g
W - weight N
m - mass kg
g - gravity N/kg

Question 3

what is the equation for gravitational potential energy

Answer 3

E = m g h
E - gravitational potential energy
m - mass kg
g - gravity N/kg
h - height m

Question 4

what is the equation for kinetic energy

Answer 4

E = 0.5 m (vxv)
E - kinetic energy J
m - mass kg
(vxv) - velocity m/s

Question 5

what is the equation for elastic potential energy

Answer 5

E = 0.5 k (exe)
E - elastic potential energy J
k - spring constant N/m
(exe) - extension m

Question 6

what is the equation for efficiency

Answer 6

Efficiency = Useful output
——————- x100%
Total input

Question 7

what is the symbol equation for power

Answer 7

P = E
–
t

P - power w (watts)
E - energy J
t - time s

Question 8

Voltage

Answer 8

V=IR

Question 9

Energy (circuits)

Answer 9

E=QV

Question 10

Charge (circuits)

Answer 10

Q=It