why would your weight be different in space compared to on earth? please use mass and gravity in your explanation

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?