Which of the following is true about the simple machine shown in red

a. it shortens the distance needed to carry objects into the truck

b. it reduces the weight of objects being carried into the truck

c. it reduces the size of the force needed to carry objects into the truck

d. it reduces the amount of energy needed to carry objects into the truck

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro

How many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride