Helen can write 15 postcards in one hour, while Kate can write 20 postcards. How much longer would Helen take to write 300

postcards than Kate?

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

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

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?