a body is thrown vertically upward from the Earth's surface and it took 8 seconds to return to it's original position. find out the initial velocity with which it was throw up ( The air resistance is considered as zero)​

How many atoms of nitrogen are in the chemical formula ni(w on

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

The receptor cells that convert light energy into neural signals are called