Wednesday

October 1, 2014

October 1, 2014

Posted by **Annette** on Monday, April 29, 2013 at 11:06am.

(a) How many joules of energy are the equivalent of one jelly doughnut?

J

(b) How many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm.

stairs

(c) If the human body is only 28% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfast?

stairs

- chemistry -
**DrBob222**, Monday, April 29, 2013 at 1:00pm4.184 J = 1 calorie

**Answer this Question**

**Related Questions**

college physics - A 55-kg woman cheats on her diet and eats a 465-Calorie (465 ...

physics - A 91 kg student eats a 200 Calorie doughnut. To “burn it off”, he ...

math - if jay eats 1/3 of jelly beans and jack 1/4 of the jelly bean leveing ...

Physics - A(n) 80.0-kg student eats a 160-Calorie doughnut. To burn-it-off, he ...

Physics - A 53 kg student eats a 200 Calorie doughnut. To “burn it off”, he ...

Math - The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. if ...

English - Which way is "1" used in a sentence? For example, I ate 1 doughnut. Or...

Math - The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. If ...

math - danielle has 30 jelly beans and 18 green jelly beans. What is the ratio ...

math - one bag of jelly beans contains 14 red jelly beans. how many red jelly ...