How much power is used to move a 25 kg mass 8 meters in 15 seconds?

What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%

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

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.