Two fixed charges, a and b, are located at x axis. a is at (-3 m, 0 m), b is at x = (+3 m, 0 m). qa = +4.0 μc and qb = -4.0 μc. calculate the electric field at point (0 m, 4 m) on the y axis.

What is the mass of the same rock on the earth

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.