What is the magnitude of the resulting force (in nano-Newtons) on the 9 nC charge
at the origin? The Coulomb constant is
8.98755 × 109 N · m2
/C
2
.
Answer in units of nN.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.