Photosynthesis is a reaction that requires an input of energy, but the energy is transferred to the product. this is a good example of which law?
the zeroth law of thermodynamics
the second law of thermodynamics
the third law of thermodynamics
the first law of thermodynamics

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Asystematic approach to problem solving is called a (an)