When you find the electric flux emerging/inducing through curved surface, a. The area vector as to be perpendicular to the surface somewhere . b. The surface cannot be curved very much; then you can treat is as though it were flat. c. You must divide the surface into pieces that are tiny enough to be almost flat. d. The surface must be spherical. e. Actually the flux through a curve surface cannot be calculated.

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.