Before the panama canal was built, ships would have to sail around cape horn, the southern tip of south america, to get from the atlantic ocean to the pacific ocean. how did prevailing winds and ocean currents or work against that voyage from east to west?

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

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?