A62kg rock climber is attached to a rope that is allowing him to hang horizontally with his feet against the wall. the tension in the rope is 710n and the rope makes an angle of 32 degrees with the horizontal. determine the force exerted by the wall on the climber's feet.
answer is 710n, why?

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?