The angle of a vector makes with the x-axis of a coordinate system mush be what size in order to make one or more of its components negative?
Less than 30 degrees
Between 30 and 60 degrees
Between 61 and 90 degrees
Greater than 90 degrees

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

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.

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer