need the answers to these asap A loop of wire is being dragged to the right, ent
ID: 2294680 • Letter: N
Question
need the answers to these asap
A loop of wire is being dragged to the right, entirely within a region that has a uniform magnetic field. In which direction is the net force exerted by the magnetic field on the loop? To the left To the right There is no net force on the coil A loop of wire has a current going through it in the counterclockwise direction. Under which of the following scenarios will there be a net torque on the loop? A uniform magnetic field is parallel to the plane of the loop A uniform magnetic field is perpendicular to the plane of the loop None of the above Which of the following kinds of light has photons with the highest energy? Visible Infrared X-ray They all have photons of the same energy A certain atom has electron energy level transitions that release red light, blue light, and purple light, respectively. Which of these energy level transitions has the highest energy difference? The one that gives off the red light The one that gives off the blue light The one that gives off the purple light They all have the same energy difference Object A has continuum emission and glows primarily in infrared light while object B has continuum emission that glows primarily in visible light. Which of the following statements is true? Object B has a higher temperature than object A Both objects have a lot of charges wiggling and atomic transitions within them Both statements are true Which of the following kinds of light would be best to observe the glowing of large dust clouds in our Galaxy? Radio Infrared Visible Ultraviolet Which of the following kinds of light would be best to observe the interactions of flying electrons with the magnetic field in our Galaxy? Radio Infrared Visible UltravioletExplanation / Answer
8) no current so no force so C)
9) B is perp to loop
so B)
10) E = hc/lambda
X-rays have small wavelength
so c)
11) purple has the smallest wavelength so c)
12) lambda T = constant
so smaller lambda means higher temp
and continous means lots of transitions so C)
13) infared waves so a)
14)
radio so a)
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