True or false? the surfaces of equal potential around an infinite charged plane are parallel to the plane (i. e. the surfaces never intersect the charged plane). false true [5 points] suppose i center a conducting sphere of charge (radius r, total charge +q) at the origin. how much energy would it take to move a point charge (total charge +q) from the surface of the sphere (r = r) to the center of the sphere (r = 0)? e = kq / r

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.

The dominant wavelength of energy emitted by the sun is