How much heat do you need to raise the temperature of 150 g of oxygen from -30°C to - 15°C?

-9.40kj
-2.07kj
-5.49kj
-1.61kj

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)