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1. ### If the electric potential in a region is given by V(x) = 6/x2, the x component of the electric field in that region is?

E= - dV/dx= -12/x^3

1 Answers · Science & Mathematics · 27/02/2020

2. ### point on y -axis is the electric potential zero?

... at (0, u) due to the -3.7nC charge is kQ/r where r is the distance between (0, u) and (-7, 0). Here r = √(u²...

1 Answers · Science & Mathematics · 02/02/2020

3. ### Physics Problem?

... with Ri = 4Ω, oriented same as the 80 volt one the 3 r's in parallel equal  1/R = 1/6 + 1/12 + 1/4 1/R = 2/12 + 1/12...

1 Answers · Science & Mathematics · 15/01/2020

4. ### Physics Question?

I = V / R V = 6 volts R = 10 + 4/2 = 12 ohms I = 6 / 12 I = 0.5 A

3 Answers · Science & Mathematics · 14/01/2020

5. ### Physics Question?

find total R R = 1 + [ 1 / (1/12 + 1/6) ] + 5 = 10 ohm find total current, I I...amp;6) = 12 a * 4 ohm = 48 v V (5) = 12 a * 5 ohm = 60 v V lost to r = 12 * 1 = 12 v find I through each  I (12) = 48/12 = 4 a I (6...

4 Answers · Science & Mathematics · 14/01/2020

6. ### Using Ohm’s Law, what is the current through a 10Ω resistor when a 5.0 V potential difference is applied across it?

v = ir i = v/r = 5/10 = 1/2 amp

1 Answers · Science & Mathematics · 11/01/2020

7. ### Physics Help?

Ohm's law: V = IR Then, R = V/I Resistance, R = (9.0 V) / (25 × 10⁻³ A) = 360 Ω

3 Answers · Science & Mathematics · 12/01/2020

8. ### Is the orbital speed required for weightlessness a constant for Earth no matter the altitude? ?

...relationship between orbital speed and orbit radius in free fall follows from m g(r) = m v^2 / r So v = sqrt( g r) Now g itself also depends...

7 Answers · Science & Mathematics · 01/01/2020

9. ### Physics question p4?

... we can apply the angular equivalent  τ = Iα (T₂ - T₁)R = I(a/R) I = (T₂ - T₁)R²/a = (156.2...

3 Answers · Science & Mathematics · 11/12/2019

10. ### A ball of mass 300 gram is whirled on the end of a string in a horizontal circle of radius r = 0.450 m at a constant?

What is the reference frame for the angle? I'll assume that it is measured from vertical tanθ = (v²/r) / g = v² / rg v² = rgtanθ  v² = 0.450(9.81)tan25 v² = 2.0585 v = 1.43 m/s

1 Answers · Science & Mathematics · 08/12/2019