the tip of the arrow is located at (x, y) = (18 cm, -7 cm) from the mirror. what is yimage, the y co-ordinate of the image of the tip of the arrow? yimage =

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

What are similarities and differences between refraction, reflection, diffraction and absorption?

During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs