Posted by **ziddi** on Wednesday, March 31, 2010 at 10:08am.

The label on a candy bar says 470 Calories.Assuming a typical efficiency for energy use by the body, if a 74 kg person were to use the energy in this candy bar to climb stairs, how high could she go?

- physics -
**bobpursley**, Wednesday, March 31, 2010 at 10:25am
Exactly what is a "typical efficiency"? Is that a physics term? (Answer:NO)

Labels on candy bars are in food Calories, which is not your obselete physics term "calories". Look up the difference.

Now to answer your question (sort of). Disect it to understand. It assumes 100 percent efficiency

mgh=1000*470* 4.18 check the units.

h= 1000*470*4.18/((74*9.8)) which is plenty high. Now you are at your "typical efficiency" term.

One can "burn" off 470 Calories by about one hour on a stationary bike with moderate effort.

http://www.nutristrategy.com/activitylist.htm

Most of the energy consumed by the body goes to keeping the heart running, and the body warm.

- physics -
**ziddi**, Wednesday, March 31, 2010 at 10:40am
typical efficiency = .25= 25%

## Answer This Question

## Related Questions

- Physics 1 - The label on a candy bar says 470 Calories. Assuming a typical ...
- physics - The label on a candy bar says 410 Calories.Assuming a typical ...
- Physics - How much work does it take for the average person (Weight = 700 N) to...
- Astronomy - We can calculate the kinetic energy of any moving object with a very...
- math - Four friends shared a candy bar. The first friend ate 1/4 of the candy ...
- PHYSICS!! - A Mountain bar has a mass of 6.7×10−2 kg and a calorie rating ...
- math - In a candy bar, 165 calories are from sugar. There are 250 calories in ...
- Algebra - For the fundraiser, will sold 225 candy bars.he earns $1 for each ...
- math - there are 48 calories in a candy bar.how many dozen calories are there in...
- Math - Hey everyone could you help me with this? Ben has 2/3 of a large candy ...

More Related Questions