An electric dipole is fixed at the origin of a coordinate system, and an electric field detector can be moved anywhere along the surface of an imaginary sphere of radius r that is centered on the origin. the radius of this sphere greatly exceeds the dipole separation, r > > d. as the detector is moved over the spherical surface, what is the ratio of the largest and smallest magnitudes of the electric field it detects, emaximum/eminimum?

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.

Calculate the linear momentum of a pickup truck that has a mass of 1000kg, and is traveling eastward at 20 m/s

Consider motion in one dimension. (the sign of the vector quantities is their direction indicator.) an object moves in the positive x-direction with speed 2.9 m/s for 4.5 s. it stops for 3.8 s and then moves in the negative x direction with speed 2.8 m/s for 4 s. what is the total distance traveled by the object in units of meter? enter a number with two digits behind the decimal point.