Water flows through a circular tube which transverse section has a diameter of 0.3 m. What speed will the water have inside the tube if the flow is 1.20 m3/s?

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?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above