The star nearest to our sun is called proxima centauri. it has a surface temperature of approximately 3000 kelvin and a luminosity about 1/1000th of the sun’s. which type of star is proxima centauri, and what color is it?

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?