Consider an electron traveling horizontally in the positive direction, above, near, and parallel to a current-carrying wire. The current is traveling in the negative direction.

(a) Will the electron keep on going straight, move towards the wire or away from the wire?

(b) If we replace the electron with a proton and now the proton is coming from above, traveling in the perpendicular direction, moving towards the wire. Will the proton hit the wire, veer to the left? veer to the right? stop? go out of the page? go onto the page?

Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if λ = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes