Acurrent in a wire increases from 2 a to 6 a. how will the magnetic field 0.01 m from the wire change? a) it increases to four times its original value. b) it increases to three times its original value. c) it decreases to one-fourth its original value. d) it decreases to one-third its original value.

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.