Water is boiled. the resulting stream is blown against huge turbine blades. the turbine blades spin in a magnetic field, producing electricity. the electricity is used to light a lamp. describe the energy conversions involved.

When the water is boiled its a thermal (heat) energy. Because when stream is blown against huge turbine blades, they rotate which produces mechanical energy. Due to this rotation of blade electricity is produced and  that is the transformation into electrical energy. The electricity is used to light the lamp which is the transformation into light energy.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s