Identify the equation used to calculate the gravitational force (Fc) acting on a block on an inclined plane. A) F=mg
B) F=mg sin
C) F=mg cos
D)F=mg tan

Modify the equation fδt=δ (mv) to find the force of friction.

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?