You replace a 40 w incandescent lightbulb with an 8 w led bulb. if you leave your lights on 24 hours a day, how much energy are you saving each day by replacing this bulb?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

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.

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?