In the attachment at the density column where there is colour why is red at the bottom if it is the least dense.

Asample of a gaseous substance changes into a liquid

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?