Question1of10 > J10 E View Policies Current Attempt in Progress In the gure, a particle moves along a circle in a region of uniform magnetic eld of magnitude B = 4.7 mT. The particle is either a proton or an electron (you must decide which}. It experiences a magneticforce of magnitude 3.0 X 1045 N.What are [al the particle's speed, [bl the radius ofthe circle, and [cl the period ofthe motion? C \\l @E / [al Number I U nits v [b] Number n U nits v [cl Number n U nits v GO Tutorial Save for Later Attempts: '0 of 5 used Submit Ansv-Ier' Using multiple attempts will impact your score. 20% score reduction after attempt4 View Policies Curre n1: Attempt in Progress A horizontal power line carries a current of 3780Afrom south to north. Earth's magnetic eld (74.1 uT} is directed toward the north and is inclined downward at 66.0\"to the horizontal. Find the [a] magnitude and [bi direction of the magneticforce on 110 m of the line due to Earth's eld. [3) Number n U nits v lb) \"l Save for Later Attempts: '0 0f 5 USEd Submit Ans'r-rer Using multiple attempts will impact your score. 20% score reduction after attempt 4