Im pretty sure that is called gravity/attraction
If the path is perfectly circular, yes, the speed is constant. This should not be confused with the velocity, because while speed is constant, its direction is not; therefore velocity is always changing.
invection
polar ice reflecting sun's light back toward space.polar ice reflecting Sun's light back toward space
This is a very good question. In general, there may be a lot of pressure for one's hypothesis to be supported as true when doing any kind of research. I'm not saying researchers are deliberately lying, although it comes to light from time to time that they do. It's that there is pressure and the bias toward publishing significant results is strong. You just want to reject that null hypothesis.
From gravitational attraction.
The definition of a gay person is simply a man who has a romantic and sexual attraction toward other men. A lesbian is a woman who has a romantic and sexual attraction toward other women. Bisexuals have an attraction toward both (but not at the same time), and transgendered people are people that don't feel that their biological sex is the one they were meant to be.
The Europeans thought the Africans couldn't handle the government themselves.
The Europeans thought the Africans couldn't handle the government themselves.
The Europeans thought the Africans couldn't handle the government themselves.
The Europeans thought the Africans couldn't handle the government themselves.
The Europeans thought the Africans couldn't handle the government themselves.
it doesnt
The Europeans thought the Africans couldn't handle the government themselves.
no
A force of gravitational attraction exists between earth and every other material body in the universe. But the force of attraction toward the sun is so much larger than any of the others that all others may be approximately neglected in comparison, and there is only one significant force acting on the planet --- the gravitational attraction toward the sun.
it's attraction force that attract the surface of fluid toward under