Alady perspires. how much liquid water (as a percentage of the mass of the lady) must evaporate to lower the temperature of said lady by 5°c? [assume that the specific heat of the human body is approximately that of water, 4200 j k-1kg-1.]

0.929%

Explanation:

= mass of water evaporated

= mass of the lady

= specific heat of human body = 4200 JK⁻¹kg⁻¹

= Latent heat of evaporation of water = 2260000 Jkg⁻¹

= Drop in temperature = 5 C

Using conservation of heat

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))

gravity

explanation: