an artificial satelite is moving in a circular orbit of radius 42250 km . Calculate it's linear velocity , if it takes 24 hours to revolve round the earth ​

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

The slope of a velocity time graph over any interval of time gives the during that interval

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules