A pool ball travels across a frictionelss horizontal plane. The x and y components of it's displacement vectore are 4.2 m and 2.1 m, respectively. (a) What is the magnitude of this vector rounded to two significant figures?

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.