A carpenter uses a crowbar to remove the top of a box. The top has a resistance of 500 N. The carpenter applies an input force of 250 N. What is the mechanical advantage of the crowbar?

Six solutions are made, each with a y concentration of 1.0 μm and varying concentrations of ab as shown below. based on the concentrations, rank the solutions in decreasing order of reaction rate.

The air that we breath is made mostly of which gaseous molecule

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig