Astronomers have now given the name matter to the mass in galaxies and galaxy clusters that does not emit or absorb electromagnetic radiation.

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.