The constant speed of a toy car is predicted to be 5m/s. We measure the car traveling a distance of 35m in 6s. calculate the percent difference between our measurement and the accepted speed of the car.

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

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.

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?