Blog

Momentum is defined as 

If you drop a rock from a great height, about how fast will it be falling after 5 seconds, neglecting air resistance? 

Arrange the following images of an aqueous base solution in order of increasing base strength:

Thermal radiation is defined as 

On a cosmic calendar, in which the history of the universe is compressed into 1 year, when did the dinosaurs become extinct? 

If you heat a gas so that collisions are continually bumping electrons to higher energy levels, when the electrons fall back to lower energy levels the gas produces 

X-rays from astronomical objects can only be detected from telescopes in space.

Given the following generic chemical reaction, which is the product? X → Y

Which of the following is not a conserved quantity? 

What is granulation in the Sun?