Jessica's bus ride to school can take between 10 and 25 minutes. This week, it took 12 minutes to get to school on Monday, 20 minutes on Tuesday, and 12 minutes on Wednesday. If she made a distance- time graph of the trips, which of the following would be true? A. The lines for Monday and Tuesday would show the same steepness. B. The line for Tuesday would be the steepest. C. The lines for Monday and Wednesday would show the same steepness.

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.

Explain vector addition, triangle method and parallelogram method

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?