Achild of mass 25kg sits on a merry-go-round. the child is seated 4m from the centre of the merry-go-round and period of the motion is 27.3s. calculate: a) the acceleration of the child b) the centripetal force

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.

How is the ideal mechanical advantage of a wheel and axle calculated?