Acarbon atom can form four covalent bonds. how many valence electrons does a carbon atom have

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

Write down two additional questions about earth's magnetic field that will make your presentation more informative.