A toy cannon uses a spring to project a 5.30g -soft rubber ball. The spring is originally compressed by a 5.00 cm and has aforce constant of 8.00N/m. when the cannon is fired, the ball moves15.o cm through the horizontal barrel of the cannon and thebarrel exerts a constant friction force of 0.032 N of the ball. a) with what speed does the projectile leave the barrel of the cannon?b) at what point does the ball have max speed? c) What is the maximum speed.

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

The radius of an atom is closest in size to a

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