If we decrease the distance an object moves we will

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Acar travels 40m in 8 seconds find the car speed

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?