Two lamps one rated 40w at 220 v and the other 60w at 220 v are connected in parallel to the electric supply at 220v. a) calculate the current drawn from the electric supply?
b) calculate the total energy consumed by the two lamps together when they operate for one hour?

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Why are graphs useful when interpreting data