The maximum amount of pulling force a truck can apply when driving on concrete is 10,560 N. If the coefficient of static friction between a trailer and

concrete is 0.8, what is the heaviest that the trailer can be and still be pulled

by the truck?

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

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?