What makes an object magnetic according to the Pauli exclusion principle? What is the sure test for magnetism? What are the properties of a magnetic field? Why is there no magnetic force on a stationary charge? Does magnetism go through iron? Why are diamagnetic substances repelled by magnetic...
2. Gravity: It's what keeps us grounded on Earth and makes things fall when we drop them.重力:它让我们在地球上稳稳地立足,也使物体在我们扔下时掉下来。3. Magnetism: Certain objects, like magnets, have the power to attract or repel other objects.磁性:某些物体,比如磁铁,有吸引或排斥其他物体...
whereas electromagnetic movements (which depend on the flow of current through a wire to generate a magnetic field) are much lower in resistance. As we will see in greater detail to come, greater resistance (resulting in less current drawn from the circuit under test) makes for a better voltm...
Then comes to the question: what's the distinction between those types of acquiring knowledge or something? If you told me you have read a novel which makes you cry, then what's the different from that you cry for a story in a game? We both fell our emotion. So can we say that ...
Magnets always exist asdipoles. In other words, you can't cut a magnet in half to separate north and south. Cutting a magnet makes two smaller magnets, which each have north and south poles. The north pole of a magnet is attracted to Earth's north magnetic pole, while the south pole ...
What are the two factors that determine the strength of the magnetic field of a bar magnet? Why is it important for ships to have ventilation? Why can we never see one hemisphere of the moon from the earth? Explain how does the rotation of the Earth makes a body weigh more at th...
since they signal a healthy and abundant blood supply. Larger adults also release more carbon dioxide when they breath out, which also makes them more attractive to mosquitoes seeking the most promising targets. Pregnant women are also more likely to become mosquito magnets, although scientists are...
I was also fascinated by the magnet itself, and how they would repel each other if I tried to stick them together. It seemed almost like magic to me. I think I would do the same for my grand kids when I have them. It was a great way to distract us so granny and my mother could...
Yet in or on that structure comes to life a moving picture. There is no motion in the structure itself, the screen does not move. All that moves is the energy that makes pixels appear active or inactive, lights them up in this colour or that. What moves are *patterns of energy*!
If something makes a real particle, that particle can go off on its own across space. If something makes a disturbance, that disturbance will die away, or break apart, once its cause is gone. So it’s not like a particle at all, and I wish we didn’t call it that. Fig. 1:...