In the diagram, q1 = +0.250 mC, q2 = -0.180 mC, and q3 = +0.400 mC. the net force on q2 is zero. how far is q2 from q3? (make sure you know the direction of each force!) (hint: milli means 10^-3.) (unit = m)

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Na food processing facility, a spherical container of inner radius r1 5 40 cm, outer radius r2 5 41 cm, and ther- mal conductivity k 5 1.5 w/m · k is used to store hot water and to keep it at 100°c at all times. to accomplish this, the outer surface of the container is wrapped with a 800-w electric strip heater and then insulated. the temperature of the inner surface of the container is observed to be nearly 120°c at all times. as- suming 10 percent of the heat generated in the heater is lost through the insulation, (a) express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the container, (b) obtain a relation for the variation of temperature in the container material by solving the differential equation, and (c) evaluate the outer surface tempera- ture of the container. also determine how much water at 100°c this tank can supply steadily if the cold water enters at 20°c.

Astate of matter all that has define volume and can flow is a(n)