Hurry !

a company that makes toothpaste states that a recent scientific study shows that their toothpaste leaves the mouth five times cleaner than any other brand of toothpaste. which of the following is a good question to ask about the company's statement? how did the study measure a mouth's cleanliness? who conducted the study? what colors of toothpastes did they use in the study?

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?