A gas expands and does P-V work on the surroundings equal to 275 ). At the same time, it absorbs 216 ) of heat from the surroundings. What is the change in energy of the system?

Which of these conditions most likely produces an unstable isotope?

What is i fracture in the crust called when land move up, down or sideways

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?