PLZ HELP DUE IN 30 MIN A spring with a force constant of 5.2 N/m has a relaxed length of 2.35 m.
When a mass is attached to the end of the spring and allowed to come to
rest, the vertical length of the spring is 4.57 m. Calculate the elastic
potential energy stored in the spring. (Don't forget your units)

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Blank liquids and gases exert a buoyant force on objects placed in them

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.