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1. ### What are the velocities and EK?

... = Fc so kQq / r² = mv²/ r v² = kQq / mr 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 Answers · Science & Mathematics · 27/09/2020

2. ### Can someone help me with my phys/astr hw?

... 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 Answers · Science & Mathematics · 28/09/2020

3. ### Electrons energy work question help?

... orbit, electrostatic force = centripetal force kQq / r² = mv²/ r so v² = kQq / mr Total energy of orbit = kinetic + potential...

1 Answers · Science & Mathematics · 26/09/2020

4. ### Physics plsss ?

a) Horizontal Range = v²sin2θ/g R = 50²sin(2*25)/ 9.8 R = 195 m b) Total time, T = 2vsin...

1 Answers · Science & Mathematics · 24/09/2020

5. ### If a curve with a radius of 90 m is properly banked for a car traveling 68 km/h , what must be the coefficient of static friction for a ca..?

... exactly countered by the weight in line with the bank:mV²/ r *cosΘ = m*g*sinΘ V²/( r *g) = tanΘ Θ = arctan...

1 Answers · Science & Mathematics · 29/09/2020

6. ### What is the magnitude of the electric field from the center of the insulator? ?

...uniformly distributed through the insulator, then the enclosed charge at r = 0.45 m is Q = 13.23C * (0.45/1.23)³ = 0.648 ...

1 Answers · Science & Mathematics · 29/09/2020