1
Q
what is power and what is it measured in
A
power is the rate at which energy is transferred = rate of which work is done (in watts = joules)
2
Q
How can we calculate power
A
P = E/T Where T = time in seconds
P = W/T Where E = energy transferred
Where W = work done
3
Q
To work out efficiency of energy transferred what is the formula
A
efficiency = useful output
total input
efficiency = useful power output
total power input
4
Q
what does a high thermal conductivity result in
A
a higher rate of energy transfer through conduction
