based on the article will the real atomic model please stand up why did JJ Thomson experiment with cathode ray tubes

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?

Ajoint produces movement when its angle decreases. which type of movement is it?

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?