In Aristotle's time, many people used ox-drawn carts. When the ox stops moving, the cart also stops moving. According to Aristotle, what caused the ox cart to stop moving? A The friction of the ground acting on the ox cart
B The lack of force applied to the ox cart
С The gravitational attraction between the ox cart and the earth
D The force of the ox cart on the ox

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc