A 0.20-kg baseball is moving at 26.9 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 37.6 m/s. If the event takes 0.05 s, the average force experienced by the ball is N.

The particles of an ice cube at 0°c (represented by the blue circles) come in contact with the particles of juan’s hand at 37°c (represented by the orange circles). which diagram correctly represents the temperature of the two substances and the direction of heat flow?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

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?