Io's metallic core makes up approximately 20% of its mass. Depending on the amount of sulfur in the core, the core has a radius between 350 and 650 km (220â400 mi) if it is composed almost entirely of iron, or between 550 and 900 km (340â560 mi) for a core consisting of a mix of iron and sulfur.
In 1886, Karl Benz developed a petrol- or gasoline-powered automobile. This is also considered to be the first production vehicle as Benz made several other identical copies. At the turn of the 20th century electrically powered automobiles appeared but only occupied a niche market until the turn of the 21st century.
Who invented the car? One of the widely recognize answer is Karl Benz. The first car invented by him in 1885 and unveiled in 1886 as the first petrol powered car. Karl Benz, as what his name told us, the âBenzâ, he is the pioneer founder of all the automobile manufacturer, Mercedes-Benz. Karl Benz was born in 25 November 1844.