A car with a mass of 1500 kg takes off from rest and reach a velocity of 45 ms after 60 seconds

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states

Protein provides 4 calories per gram. mary is on a diet that requires her to eat at least 40 grams of protein each day. she's eaten 152 calories of protein today. howmuch more protein does mary need to eat to meet her goal