Physics, 27.01.2020 21:31 kalebbenton15
Aboat is traveling at 3.2 m/s in the same direction as an ocean wave of wavelength 30 m and speed 6.8 m/s. if the boat is on the crest of a wave, how much time will elapse until the boat is next on a crest?
Answers: 2
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According to newton’s first law of motion, which force is expected to cause a body to accelerate?
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The substances that are necessary for producing of certain hormones and that store and transport vitamins
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The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
Answers: 3
Aboat is traveling at 3.2 m/s in the same direction as an ocean wave of wavelength 30 m and speed 6....
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