Ordonează crescător valorile următoarelor mărimi fizice:a) 1Mm, 150 pm, 0,1Em, 25 cm, 5hm,200km. b) 10 t, 50mg,2kg,40yg,74 Zg, 34g, 81Gg. c)600 ms, 7200 s, 10min,0,2h,36 ms. d) 27gradeC, 227K,300dK,2000gradeC,27MK. e)1000mA.0,1kA,107uA,10cA. f)0,048 m pătrați, 4cm pătrați, 0,2 dm pătrați, 8000 mm pătrați. g) 5l, 1000ml, 2dm cubi, 4000 cm cubi, 0,8m cubi

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.