một giá nhẹ gắn trệ một tấm ván gỗ khối lượng M đặt trên bàn nhẵn nằm ngang có treo một quả cầu khối lượng m bằng sợi daah dài l . Một viên đạn nhỏ khối lượng m bay ngang xuyên vào quả cầu và vướng kẹt ở đó

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.