A hair dryer uses 2000J in 5 seconds when on full power. The power used is?
we are told that E = 2000J and t = 5s we need to find P
recall which formula used energy, time and power
P = E/t
sub in values
P = 2000/5
= 400 W (DONT FORGET UNITS)
TF
we are told that E = 2000J and t = 5s we need to find P
recall which formula used energy, time and power
P = E/t
sub in values
P = 2000/5
= 400 W (DONT FORGET UNITS)
