The MPG of a human
Besides the energetic components, water and fiber also contribute to mass/volume of our food ... Power expended against the air is proportional to the cube of velocity, so a biking speed of 7 m/s (15 m.p.h.) expends 7³~350 times as much power to ...
RP 5: MythBusters: How small could a lead balloon be?
On a previous episode of The MythBusters, Adam and Jamie made a lead balloon ... of Volume to Surface area, I have: The key point is that if I double the length of the side of the cube, I increase the volume (and lift) by a factor of (2)(2)(2) =8.
How Do You Find the Density of Saturn?
Just as a reminder, we define density as: This means that we really need to determine two things. First, we need the mass of Saturn. Second, we need the volume. We can get the volume if we know the radius of Saturn. Volume Technically, Saturn isn’t ...
A lifetime of energy in the palm of your hand - IFR FaD 4
One TOE = 11,630 kilowatt hours, for a lifetime total of 8 million kW-hr ... I did back then: A cube of DU sufficient for an American lifetime would be about 0.92 on a side. Figuring a little extra, at .95 on a side, give a volume of
The shape of things to come: A consumer's guide to 3D printers
This year, however, saw a relative deluge in 3D-printing representation, with strong showings from 3D Systems, FormLabs, MakerBot and the cloud-based 3D printer ... The high-end M.O.B. cube [pictured] features a build volume of 8 x 6.3 x 6.2 inches ...