Given specific value of parameter r =6.9 a, calculate the actual numerical ratio E(r)/E(2r) of magnitudes of the electric fields at point P for two different distances, r and 2r, in each of the configurations. This numerical ratio would then be approximately represented by 2n for scaling E(r) ∝ 1/rn, and that's how you determine

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Positive ions differ from neutral atoms in that