How much energy does a 60.0 w light bulb use in half an hour? is the light bulb is 12% efficient, how much thermal energy does it generate?

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?