If the density of an object is 2.87 x 10 -4 pounds per cuibic inch, what is it’s density in g/ml?

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

How is the atomic number of a nucleus changed by alpha decay