un niño de 40 kg se encuentra en el trampolín de la piscina a 5m del agua ¿cual es su energia potencial?

Why is permeable soil best for plants that need a lot of drainage?

Which is true about metals used for jewelry, such as platinum and gold? a. they have low flammability. b. they have low reactivity. c. they have high flammability. d. they have high reactivity.

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid