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# discussion4 - Last week Temperature Definition-Temperature...

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Last week: Temperature Definition: - Temperature is a measure for hotness and coldness and can be felt or measured with a thermometer. -Temperature measures how fast the molecules in a material are moving http://haha.nu/creative/creative-photos-by-chema-madoz

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Mass Context: How much sugar do you put in your coffee? How hard do I have to push to move a car? What is the weight gallon of water, a gallon of air, or a gallon of helium? Definitions: - Mass  is the  amount of matter  in an  object, i.e. its  energy content (nuclear) . - Inertial mass   is  sluggishness  of an  object, its resistance to acceleration. - Gravitational mass   is proportional to  the  weight  of an object, the gravitational  pull on the object. Discussion: (1) experimental observation:  Inertial mass = Gravitational mass = Mass The U.S. National Prototype Kilogram, which currently serves as the primary standard for measuring mass in the U.S. Lecture demos: sluggishness , weight force on three masses
Discussion continued … 2) Measuring mass : With a scale or balance.

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discussion4 - Last week Temperature Definition-Temperature...

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