According to newton's first law of motion, what does it take to move an object at rest? a. a force greater than the force keeping the object at rest b. a force equal to the force keeping the object at rest, but in the opposite direction c. a frictionless surface and a net force of 100n d. the force of inertia cannot be overcome without changing gravity

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit