A plate falls vertically to the floor and breaks up into three pieces, which slide along the floor. Immediately after impact, a piece of mass 332 g moves along the x-axis with a speed of 1.45 m/s, and a piece of mass 325 g moves along the y-axis with a speed of 1.13 m/s The third piece has a mass of 136 g. What angle, in radians, does the third piece's initial velocity make with the positive x-axis

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.

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.