A crate is at rest on a surface with a coefficient of static friction of 0.350. If a force of 125N just gets the box to begin to move, what is the normal force on the box?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?