The electron volt (ev) is a convenient unit of energy for expressing atomic-scale energies. it is the amount ofenergy that an electron gains when subjected to a potential of 1 volt; 1 ev = 1.602ã10â19j.

using the bohrmodel, determine the energy, in electron volts, of the photon produced when an electron in a hydrogen atom movesfrom the orbit withn= 5 to the orbit withn= 2.

show your calculations.

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.