A 250 Kg cast iron car engine contains water as a coolant. Suppose the temperature of the engine is 35°C when it is shut off. The air temperature is 10°C. The heat given off by the engine and water in it, as they cool to air temperature is 4.4x106 J. What mass of water is used to cool the engine?

What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)