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12y ago

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Can you use the word electrostatic attraction in a sentence?

"The inexpensive tabletop air cleaners have a wire grid inside that supposedly captures and holds dust by electrostatic attraction, but most do not work very well."


When does thunder and lightning happen?

Clouds can build up very high electrical charges. This can create a very high EMF (Electromotive Force, AKA Voltage) between clouds or from cloud to earth. When this force gets large enough, an electrical discharge current will arc from cloud to cloud or cloud to earth. This discharge arc makes itself known by the light it releases (which we call lightning) and the sound it creates (which we call thunder) as it heats the air along the discharge path.


Why discharge tube appears dark at very low pressure?

At very low pressure in a discharge tube, there are fewer gas atoms present to ionize and produce light. This results in fewer collisions and less emission of visible light, causing the discharge tube to appear dark.


In what type of nucleus is the strong nuclear force greater then the electrostatic force?

In atomic nuclei with a large number of protons, such as those with atomic numbers greater than 83, the strong nuclear force is greater than the electrostatic force. This is because the strong force acts over a very short range and helps to overcome the electrostatic repulsion between positively charged protons, which becomes more significant with increasing atomic number.


Why does the plasma in a fusion reactor need to be very hot?

The plasma in a fusion reactor needs to be very hot to achieve the high temperature and pressure conditions required to overcome the electrostatic repulsion between positively charged atomic nuclei and initiate the fusion reaction. This high temperature allows the atomic nuclei to collide with enough energy to overcome the electrostatic barrier and fuse together, releasing energy in the process.