According to the gravitational potential energy equation, a tennis ball resting on top of which object would have the greatest potential energy?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

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