John wants to move a 200-kg rock using a stiff bar measuring 3 meters long as a lever. he puts the fulcrum x meters from the rock. assume that g = 10m/s^2. 2-1. sketch this in a diagram and annotate the forces/velocities. (10pts) 2-2. if x = 0.5m, how much force must he use in order to move the rock? (10pts) 2-3. if the maximum force he can exert on the crowbar is 500n, what is

it about 600 mph from what i calculated

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

magnified images possible images can be real = projected onto a screen

the area between the graph and the t axis