The scalar x-component of a displacement vector for a trip is -70 km. Represent the trip using the x-coordinate axis. Choose Earth to be the object of reference. Use the x-axis with a positive direction pointing to the east and negative direction pointing to the west. The displacement is positive when moving in the east direction.

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

Diamond will scratch quartz. true or false