A cylinder steel shaft of radius 2cm and 50 cm long is turned down on a lathe to one half its radius for distance of 20cm from one end. Find the distance of its centre of gravity from the thicker end.

Awheelhas a radius of 4.8 m. howfar (path length) does a point on the circumference travel if thewheel is rotated through angles of 30°, 30 rad, and 30 rev, respectively?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

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 !