A21.7kg child descends a slide 3.5 m high and reaches the bottom with a speed of 2.2m/s. how much thermal energy due to friction was generated in this process?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?

Calculate the volume of this regular solid. what is the volume of the cone? round your answer to the nearest hundredth