Bob and jim decide to play tug-of-war on a frictionless (icy) surface. jim is more than twice as strong as bob, but bob weighs 160 lbs while jim weighs 145 lbs. who loses by crossing over the midline first? select all correct answers.

What is the momentum of a 2 kg object moving at 15 meters per second

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

The largest observatory complex in the world is on mauna kea, the tallest mountain on earth. what are some factors astronomers consider when selecting an observatory site? don’t forget practical ones. should astronomers, for example, consider building an observatory on denali (mount mckinley) or mount everest?