Physics, 30.09.2019 23:00 Dogtes9667
Charlie is playing with his daughter torrey in the snow. she sits on a sled and asks him to slide her across a flat, horizontal field. charlie has a choice of (a) pushing her from behind by applying a force downward on her shoulders at 30^\circ below the horizontal (fig. a), or (b) attaching a rope to the front of the sled and pulling with a force at 30^\circ above the horizontal (fig. b). which would be easier for him and why?
Answers: 1
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Modern atomic theory states that the atom is a diffuse cloud of surrounding a small, dense nucleus. a) electron b) neutron c) proton d) quark eliminate
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Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?
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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
Charlie is playing with his daughter torrey in the snow. she sits on a sled and asks him to slide he...
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