8. In A Hall Experiment, A Current Of 25 A Is Passed Through A Long Foil Of Ag, Which Is 0.1 Mm Thick And 3Mm Long. Calculate The Hall Voltage Produces Across The Width By A Flux Of 1.4 W/M2. If The Conduction Of Ag Is 6.8X10Mho/M. Estimate The Mobility And Hall Coefficient.

Three archers each fire four arrows at a target. joe’s four arrows hit at points 10 cm above, 10 cm below, 10 cm to the left, and 10 cm to the right of the center of the target. all four of moe’s arrows hit within 1 cm of a point 20 cm from the center, and flo’s four arrows hit within 1 cm of the center. the contest judge says that one of the archers is precise but not accurate, another archer is accurate but not precise, and the third archer is both accurate and precise. which description applies to which archer? explain

Modify the equation fδt=δ (mv) to find the force of friction.

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.