A downhill skier reaches the steepest part of a trail. Her speed increases 10 points from 9 m/s to 18 m/sin 3 seconds. What is her average acceleration?

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. why did he expect a difference

The lid of a pressure cooker forms a nearly airtight seal. steam builds up pressure and increases temperature within the pressure cooker so that food cooks faster than it does in an ordinary pot. the system is defined as the pressure cooker and the water and steam within it. if 2.0 g of water is sealed in a pressure cooker and then vaporized by heating, and 5127 j must be added as heat to completely vaporize the water, what is the change in the system’s internal energy? answer in units of j.