On a wall, there are several 1 - 4 mm elongated drops with a large bloody rectangular patch in the center. The rectangle's long side faces toward the bottom of the wall. Running through the pattern are four smear lines about 0.5 - 1 cm apart and perpendicular to the bottom of the wall. No other marks are found on the other walls. Which best explains the sequence of events? A. The victim was hit in the head with a blunt object, his face hit the wall, and his hand slid down along the wall as he collapsed.
B. The victim was shot with a gun and collapsed on the floor beneath.
C. The victim's throat was cut and he collapsed on the floor.
D. The victim was stabbed and cut multiple times before collapsing on the floor.

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.

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J. j. thomson’s experiment disproved the theory that an atom