ANSWER SOON PLEASE I NEED HELP In this diagram, which force is represented by L?
A.) the force that exists in reaction to gravity or weight
B.)the reaction force of wind and air that is pushed out of the way
C.)the force caused by the wings encountering wind and air
D.)the force caused by a draft of wind

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

The solid that is formed and usually sinks to the bottom of a solution is the