Which of the following would be a good question that could be scientifically investigated?

what is the best advice a parent can give a child

what is the most appropriate number of dogs per household

do cherry popsicles freeze slower than orange popsicles

what is the correct way to pursue happiness in life

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.