Assume the entire mass of a 10 kg wheel along its rim which is 50 cm from the axis of rotation (the wheel is considered a thin ring). The wheel is rotating at an angular speed of 20 rad/s. If the wheel is braked through the brake pads on the edge and stops 1 second later, the force exerted by the brake pads on the wheel is equal to​

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

Ithink the answer is c but then again i'm probably wrong