What holds the hydrogen and oxygen atoms together in a water molecule

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

While carrying a heavy box up the stairs,you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.

Five renewable energy resources are wind, sunlight, moving water and geothermal energy. question 2 options: true false