04/18/16

HELP VERY MUCH NEEDED!
How much heat does it take to raise the temperature of 5.0 kg of plastic from 15C to 75C? The specific heat of plastic is 2.60 kJ/(kgC). Use Q = mc(Tf - Ti). A. 980 kJ B. 196 kJ   C. 780 kJ D.... more
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04/17/16

If 1/3 workers take public transportation and 2/5 drive cars what fraction of the workers walk to work ?
I need to understand how the answer is 4/15
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