... = Fc so kQq /

**r**² = mv²/**r**v² = kQq / m**r**A convenient quantity...to eV, divide by 1.6e-19) 2) PE = kQq /**r**= 2.30e-28N·m² /**r**a) 4.34e-18 J = 27.1 ...1 Answe

**r**s · Science & Mathematics · 27/09/2020... between two masses is G m1 m2/

**r**^2. New mass is m1/2 and m2/2,**r**=2r. ... and vice versa. a is the correct answer. 3. pi**r**^2 is the area of collection. If the diameter ...1 Answe

**r**s · Science & Mathematics · 28/09/2020... o

**r**bit, elect**r**ostatic fo**r**ce = cent**r**ipetal fo**r**ce kQq /**r**² = mv²/**r**so v² = kQq / m**r**Total ene**r**gy of o**r**bit = kinetic + potential...1 Answe

**r**s · Science & Mathematics · 26/09/2020a) Ho

**r**izontal Range = v²sin2θ/g R = 50²sin(2*25)/ 9.8 R = 195 m b) Total time, T = 2vsin...1 Answe

**r**s · Science & Mathematics · 24/09/2020... exactly counte

**r**ed by the weight in line with the bank:mV²/**r***cosΘ = m*g*sinΘ V²/(**r***g) = tanΘ Θ = a**r**ctan...1 Answe

**r**s · Science & Mathematics · 29/09/2020...unifo

**r**mly dist**r**ibuted th**r**ough the insulato**r**, then the enclosed cha**r**ge at**r**= 0.45 m is Q = 13.23C * (0.45/1.23)³ = 0.648 ...1 Answe

**r**s · Science & Mathematics · 29/09/2020