Physics, 21.11.2019 18:31 joserms729
Aglider airplane is coasting horizontally when a very heavy object suddenly falls out of it. as a result of dropping this object and assuming there is no air resistance, a) the glider’s speed will first increase, then decrease. b) the glider’s speed will first decrease, then increase. c) the glider’s speed will increase. d) the glider’s speed will decrease. e) the glider’s speed will remain the same as it was.
Answers: 3
Physics, 22.06.2019 21:00
Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.
Answers: 1
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