Someone please help its a simple power problem. An electric heater connected to a power supply is operating at 200 Watts. If the current and the voltage to the heater are both doubled, how many joules per second of electrical energy will be converted to heat?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.