Homework Help: chemistry

Posted by jamie on Friday, September 26, 2008 at 9:09pm.

A 43 kg person drinks 490 g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 16% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in ascending is given by mgh, where m is the mass (in kilograms), g the gravitational acceleration (9.8 m/s2), and h the height (in meters.)]

chemistry - DrBob222, Friday, September 26, 2008 at 10:53pm
How much energy is in the 490 g milk?
3 kJ/g x 43,000 g x 0.16 = ??
E = mgh. Solve for h.
chemistry - Poop, Sunday, September 18, 2011 at 1:47am
DrBob is WRONG according to my gd assignment

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