If 0.5 A of current flows through a 40 Ohm light bulb, what voltage is dropped across the light bulb?

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

The total amount of energy contained in an object