Apollo 9 launched in 1969. Its mission was to test the lunar model, the part of the space vehicle that would

take the astronauts to the moon. The astronauts in the

lunar module tested its engines and equipment while

they orbited Earth.

Which specific NASA goal did Apollo 9's mission focus

on?

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.