You are concerned about the moon roof on your new sports car. it seems to flex when you drive at high speeds. calculate how much net fore the moon roof must withstand and in what direction. assume the moon roof is flat with an area of 0.5m2, and the pressure and velocity over the moon roof are constant. your driving speed is 20 m/s and the velocity over the moon rood is 30m/s. the pressure inside the car is 90,500 n/m2, and the freestream pressure and density in front of the car are 90,000 n/m2 and 1.1 kg/m3. (hint: draw a sketch)

alright, so i know from the solutions in th back of the book that the answer is f=387.5 n (outward), but i can't get there. i think i need to use bernouli's equation but i'm not really sure about that either.

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.

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

State the following: boyle's law and charle's law