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A 3kW kettle boils water in 4 minutes. Does this use more electrical energy than a 150W fridge left on 1 hour?
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Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays
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The receptor cells that convert light energy into neural signals are called
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Afisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. it takes a time of 2.70 s for the boat to travel from its highest point to its lowest, a total distance of 0.700 m. the fisherman sees that the wave crests are spaced a horizontal distance of 6.50 m apart. a. how fast are the waves traveling? b. what is the amplitude a of each wave?
Answers: 1
A 3kW kettle boils water in 4 minutes. Does this use more electrical energy than a 150W fridge left...
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