Sunday

December 21, 2014

December 21, 2014

Posted by **Allie** on Friday, December 2, 2011 at 8:32pm.

I know the answer to the first part is

10.4%

but i'm not sure how to find this second part...

If your actual efficiency is 0.20, how many kcal did you really burn?

___________kcal

- Physics -
**drwls**, Friday, December 2, 2011 at 8:40pmTo have an efficiency of 20% and to have done the same amount of work, yoou need to have burned fewer kcal, by a ratio of 10.4/20. That makes 359 kcal

- Physics -
**Shawn**, Sunday, December 4, 2011 at 7:16pmHow did you get the first part?

**Answer this Question**

**Related Questions**

physics - you spend 30.0 minutes on a stair-climbing machine, climbing at a ...

physics - calculate the number of kilocalories needed to climb 232 stair steps (...

physics - (a) calculate the number of kilocalories needed to climb 232 stair ...

physics - A record was set for stair climbing when a man ran up the 2300 steps ...

math - A hot air balloon was at a height of 60 feet above the ground when it ...

math- can you please check my work - Can you please check my work. I asked this...

Physics - An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the ...

Physics - An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the ...

Physics - An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the ...

Physics - An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the ...