A half-circle arc with a uniform charge distribution lies in the xy-plane, centered on the origin, and the field-point is at the origin. The half circle is entirely right (positive x-coordinates) of the y-axis. Which way is the E-field vector at the field-point?

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

Ineed ! using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false