A film company is filming a documentary. The video camera runs out of batteries. The camera draws 0.25 Amps of current, and has an overall resistance of 72 Ohms. What voltage supply does this camera need - will your last 6 pack of 9V batteries do the job?

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.