Which of the following pairs of spacetime events are separated by timelike, lightlike, and spacelike intervals? (these events are given by (ct, z, y,2) so you do not need to multiply the zeroth component by c). (a) (5,3,0,9) and (4,2,-1,8) (b) (8,6,7,5) and (10,7,8,6) (c) (2,3,6,0) and (0,3,7,0) (d) (-5,3,0,4) and (0,0,0,0) (e) (2,3,5,7) and (6,6,5,12)

How do hydroponic plants differ from nonhydroponic plants? a.) hydroponic plants can grow in a dryer soil. nonhydroponic plants grow in moist soil. b.) hydroponic plants grow on other plants and are known as air plants. nonhydroponic plants do not grow on other plants. c.) hydroponic plants can only grow in rain forests. nonhydroponic plants cannot grow in rain forests. d.) hydroponic plants are grown without soil. nonhydroponic plants are grown in soil.

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.