What is the magnitude of the electric force between charges of 0.26 C and 0.15 C at a separation of 0.83 m ? k=8.99×10^9 N⋅m^2/C^2. Also, If the separation between the charges is increased, does the magnitude of the force increase, decrease, or stay the same?

Which of the following is an example of units for speed

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is