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Physics, 21.06.2019 23:30
Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)
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Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.
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Which phrase describes the paleo-indians of prehistoric arkansas? a. grew cornb. lived in cliff dwellings c. crafted beautiful potteryd. hunted with stone-tipped spearswhich phrase describes native arkansas from the woodland traditiona. developed widespread agricultureb. hunted mastodon and woolly mammothc.built rectangle-shaped homesd. traded salt with other groups
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Physics, 23.06.2019 04:31
The radioactive isotope of lead, pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. if 1 gram of this isotope is present initially, how long will it take for 80% of the lead to decay? (round your answer to two decimal places.)
Answers: 2
8000 J of heat is given off to raise the temperature of 50g 0f copper from x⁰c to 90⁰c. what is the...
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