Trigonal planar vs. trigonal pryramidal difference? how to determine whether a bond is one or the other

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

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