In chemistry a 'system' is . A. The part of the universe that is being studied at the moment.
B. The entire universe.
C. All of these
D. Outside of the experiment, or reaction of interest.

Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature

Anybody wanna ? (picture included? )

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20