An Astronomer records Over several nights the change in position of Venus and then calculate that Venus orbits the sun once every 110 earth days. This figure is considerably lower than the 225 Earth Day orbit that is widely excepted for Venus. What should the scientist do next?

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

What is the coefficient of kinetic friction μk between the block and the tabletop?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.