# p14qz7 - mfs What is its wavelength What is its period 4...

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Physics 14 - Quiz 7 - Winter 2009 1. If you lick a piece of metal outside on a very cold day, you will get hurt. If you lick a piece of wood on the same day, nothing will happen. Explain. 2. You heat 5 kg of gold coins and increase their thermal energy by 1000 J and then heat 2 kg of water, increasing its thermal energy by 1000 J. Explainwhat you think will happen and why. 3. A water wave has a frequency of 0.25 Hz and a speed of 4
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Unformatted text preview: mfs. What is its wavelength? What is its period? 4. What is a longitudinal wave? What are two physical examples? 5. From the following temperatures, what is the hottest and what is the coldest? Coldest: Hottest: 6. Find the wave made from the superposition of the following two waves: 4 3 2 1 j 1 2 3 4 5 6 7 8-2 8-3-1 t- u ---__u -u u_ -: -u___ -=---u -u -=--u -u -=u --_ u ---4-2...
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