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we must use

**r**^2 v= constant.**r**is the radius and v is the velocity. first condition...4*4=1. This remains a constant. In the second segment**r**=1. velocity =1 m/s. In the third segment (1/4)^2 v=1. v=16 m/s...3 Answers · Science & Mathematics · 15/09/2019

V = kq/

**r**so**r**= kq/V = 8.98755179e9 * 1e-5/1e4 = 8.98755179e9 * 1e-5/1e4 = = 8.98755179e9...3 Answers · Science & Mathematics · 15/09/2019

2. The angle is given w/

**r**/t horizontal, so Ax = A*cos45.0º Ay = A*sin45....1 Answers · Science & Mathematics · 15/09/2019

I = (E1-E2)/(r1+r2+

**R**) = (2-1)/(0.1+0.2+2.7) = 1/3 A V1 = E1-r1*I = 2-0.1/3 = 1.967 V V2 = E2-r2*I = 1-0.2/3 = 0.933 V1 Answers · Science & Mathematics · 18/09/2019

current flows through, not across first get total

**R**20 parallel with 35 = 20•35/55 = 12.73 in series with 15 that is 27.73 ...2 Answers · Science & Mathematics · 19/09/2019

.... The potential is constant within the shell -- that is, for

**r**<**R**_shell. Shell 1 has the largest...1 Answers · Science & Mathematics · 18/09/2019

The resistance between A and B is 1/

**R**= 1/30 + 1/40. That should be all the hint you need.2 Answers · Science & Mathematics · 18/09/2019

... energy between two charges, in Joules U = kQ₁Q₂/

**r**Q₁ and Q₂ are the charges in coulombs...1 Answers · Science & Mathematics · 14/09/2019