The Internet Has Massively Broadened Career Possibilities

We’re told a partially filled tank holds 30 liters of gasoline with an 18% concentration of ethanol. A fuel station is selling gasoline with a 25% concentration of ethanol. What volume in liters of the fuel station gasoline would we need to add to the tan…

The average life expectancy in Japan is 84 years according to the OECD. Japanese women can expect to live to the age of 87, 6 years more than their counterparts in the U.S. Japanese men can expect to live to 81, five years more than their American peers. …

So let’s talk a little bit about groups of the periodic table. Now, in a very simple way to think about groups is that they just are the columns of the periodic table, and a standard convention is to number them. This is the first column, so that’s Group…

We’re told Glenn drained the water from his baby’s bathtub. The graph below shows the relationship between the amount of water left in the tub in liters and how much time had passed in minutes since Glenn started draining the tub. And then they ask us a f…

When you look at the Moon in the night sky, it might seem reasonably close, but it’s actually incredibly far away. Right over here is a scaled picture of the distance between the Earth and the Moon. Earth has a diameter of approximately 8,000 miles, while…

John tier claims to be a time traveler from the year 2036, and his time machine kind of looks like a certain DeLorean whose parts you can actually buy. Vauce Kevin here; this is Mind Blow: Time Travel Edition. This is a real time machine, sort of. Dr. Ron…