Satellite A A orbits a planet at a distance d d from the planet’s center with a centripetal acceleration a0 a 0 . A second identical satellite B B orbits the same planet at a distance 2d 2 d from the planet’s center with centripetal acceleration ab a b . What is the centripetal acceleration ab a b in terms of a0 a 0 ?

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?