A ball is thrown vertically upwards into the air. It rises a vertical distance of 2.7 m before falling to the ground. Assuming that all of the ball's initial kinetic energy is converted into...
which is the one statement that correctly provides a piece of evidence that the continents have drifted in the geological past. 1) The presence of humans on all the continents indicates that the...
Write a short account on what is meant by the term founder effect and outlines the evidence which suggests that modern man is descended from a small founding population originating from Africa. Any...
The position of the Ralos System is such that it allows the inhabitants of Htrae to observe a far-away star known as eDf456 (this is the star that we know as the Sun). (Q) The people of Htrae suspect...
Amongst the radioactive elements that were incorporated when the Earth was formed were: uranium 238U with a half-life of 4.5 ? 109 y uranium 235U with a half-life of 7.1 ? 108y thorium 230Th with a...
Amongst the radioactive elements that were incorporated when the Earth was formed were: uranium 238U with a half-life of 4.5 ? 109 y uranium 235U with a half-life of 7.1 ? 108y thorium 230Th with a...