In a mechanics experiment, a student picks up four different discs with different radii and sets them in uniform circular motion. For each disk, the tangential speed of a point near the outside edge is recorded. The recorded values for_ are inconsistent. (Which disk) photo of chart attached

Because the sun is the biggest and if the sun orbits the earth we will be dead probably

I’m not sure about this question

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.