The of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?