Recent content by petefic

Homework Statement A 50.0g copper calorimeter contains 250g of water at 20 deg celsius. How much steam must be condensed into the water if the final temperature of the system is to reach 50 deg celsius?Homework Equations Can someone explain how to find the Ls? I was told that just plugging in...

Thanks. Do you have any idea on how to get started on part b?

Homework Statement A 650kg elevator starts from rest. It moves upward for 3s with constant acceleration until it reaches its cruising speed of 1.75m/s. A) What is the average power of the elevator motor during this time period? B) How does this power compare with the motor power when the...