Pure aluminum metal has a density of 2.70 g/cm

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

In which of these cases are the two wave points considered to be in phase with each other?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here