Slide 17: practice slide #4
at 283k, the gas in a cylinder has a volume of 0.250 l. the gas is allowed to
expand to 0.285 l. what must the final temperature be for the pressure to remain
constant?

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has: