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Warm up 03-14-14

Warm up 03-14-14. Question: What is friction? Answer: a force that resists motion Goal: I will review gravity and explore friction. Element of the day. 74 – Tungsten – W

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Warm up 03-14-14

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  1. Warm up 03-14-14 • Question: What is friction? • Answer: • a force that resists motion • Goal: I will review gravity and explore friction

  2. Element of the day • 74 – Tungsten – W • Tungsten’s most famous use is in the filament of incandescent light bulbs, which turn only about 10% of the electricity they use into light. The other 90% is wasted as heat. • Tungsten carbide tools are tougher than diamond and harder than steel, and are among the most useful cutting tools. Tungsten carbide can also be used in armor piercing bullets • Tungsten is both very dense and fairly cheap, so it is used for counterweights, fishing sinkers, darts, shot puts, and more. Its density also allows it to shield radiation like lead.

  3. Warm up • Last call for donations! • Quiz Announce • Wrap up / Review week • Prep Lab • Tonight’s HW • Pgs29-34 (+ any you missed) • Ch 5 Quiz next Fri Agenda / HW

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