You have a small tank of water. suppose you make waves in the tank, and measure their speed in different depths of water. which is the independent variable, and which is the dependent variable?

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

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.

Can anyone plz answer any of these. even if its one it will