Two boys weighing 60 N and 70 N sit on a see-saw. The boy weighing 60 N sits on the left side of a seesaw at a distance of 1m from the pivot while the other boy sits on the right side at a distance of 1.2 m. What distance must a third boy of weight 80 N sit on the left side in order to balance the see-saw?

Ogle–2013–blg–0723 is an exoplanet that is similar to earth in size and proximity to its star. this exoplanet has mass m=4.18×1024kg and radius r=5.66×106m. an astronaut whose weight on earth is w=735n lands on the planet. a. calculate m, the mass of the astronaut. b. calculate gp? , the acceleration due to gravity on the surface of ogle–2013–blg–0723. c. calculate wp? , the weight of the astronaut on the surface of ogle–2013–blg–0723. d. calculate v, the minimum velocity required to put an object into orbit above ogle–2013–blg–0723. e. calculate t, the time required to complete an orbit around ogle–2013–blg–0723.

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

Why don't you see your reflection in water with waves or repples