A student finds some information about energy-saving light bulbs.
A 30W light bulb uses 600J o...
Physics, 09.04.2020 15:56, reesespowerade
A student finds some information about energy-saving light bulbs.
A 30W light bulb uses 600J of electrical energy in a certain period of time. In that time, it produces 450 J of light energy. The rest of the energy is wasted.
4.1 Calculate the energy wasted by the light bulb in this period of time.
Answers: 3
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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.
Answers: 2
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Which inventor was often called the lady edison
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