Aresearcher wishes to produce a 1.5-t magnetic field at two separate locations: (i) at the center of a 10-turn circular loop of diameter 25 cm, and (ii) at a perpendicular distance of 1.0 cm from a long straight wire. what current would be required in each case?

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.