# Yahoo Web Search

1. ### What is the electric potential 14.0 cm from a 3.00 μC point charge?

V = k(3µ)/0.14 = 193000 volts Potential from a charge is V = kQ/r in volts    k = 1/4πε₀ = 8.99e9 Nm²/C²    r is separation in meters    q is charge in coulombs

1 Answers · Science & Mathematics · 09/02/2020

2. ### I am 1,90 cm but I have boring and dull brown eyes,why I have been so unlucky? ?

I think the most dull and boring thing about you is your personality.

4 Answers · Beauty & Style · 03/08/2020

3. ### a sphere has the volume 36π cm ^3 .What area does the sphere have?

The volume of a sphere with radius "r" is given by: V = 4*π*r³/3 so: r = (3V/(4π))^(1/3) The surface area of a sphere with radius "r" is given by: A = 4π*r² You want to know the area given the volume...

4 Answers · Science & Mathematics · 31/10/2019

4. ### Temperature changes from [25∘C] up to [125∘C] a tungsten wire filament [15 cm ] long with a diameter of [1.7 mm] will be used.?

(A) By J = σE, where J is the current density at a given location in a resistive material, E is the electric field at that location, and σ (sigma) is a material-dependent parameter called the conductivity.  =>E = J/σ =>E...

1 Answers · Science & Mathematics · 05/07/2020

5. ### A solid cylinder of radius 15 cm and mass 14 kg starts from rest and rolls without slipping a distance.?

1 Answers · Science & Mathematics · 30/07/2020

6. ### The field just outside a 2.30 cm -radius metal ball is 2.75×102 N/C and points toward the ball. What charge resides on the ball?

Check your arithmetic.  I get -1.62*10^-11C

1 Answers · Science & Mathematics · 05/02/2020

7. ### If ED = √8 cm and the area of ∆ABC = trapezoid ACDE, the length of AC is?

AC = 2.  See below for explanation. Notice that there are two similar triangles, ABC and EBD.  The area of EBD is twice that of ABC, since the trapezoid area is equal to that of triangle ABC. But, the square...

3 Answers · Science & Mathematics · 19/12/2019

8. ### The potential difference between the surface of a 2.4 cm -diameter power line and a point 1.4 m distant is 4.8 kV?

I've spent some time researching this and I'm pretty sure this is right: V = ∫E dr = ∫ (λ / 2πrε₀) dr = (λ / 2πε₀)*ln(R/r) = 4800 V The only question I have is "what is R" -- in other...

1 Answers · Science & Mathematics · 25/01/2020

9. ### A steel cylinder holds 1.50 g of ethanol. What is the pressure of the ethanol vapor if the cylinder has a volume of 251 cm ^3 ?

moles ethanol = 1.50 g / 46.07 g/mol = 0.03256 mol PV = n RT P = nRT/V P = 0.03256 mol (0.08206 Latm/molK) (523 K) / 0.251 L P = 5.56 atm If you need pressure in a different unit, just use the R that...

1 Answers · Science & Mathematics · 10/02/2020