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...
十个物理现象 |#英语#英语口语1. Rainbow: When sunlight passes through raindrops and gets refracted, it creates a colorful arc in the sky. 彩虹:当阳光穿过雨滴并发生折射时,在天空中形成一条多彩的弧线。 2. Gravity: It's what keeps us grounded on Earth and makes things fall when we drop them...
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 ...
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...
They avoid danger by relying on their keen sense of smell, which makes up for their weak eyesight. They rely on this sense to find food, detect danger, and follow scent trails as a way of navigation. Some strong scents people often use as a natural mouse repellent include: Lavender – ...
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...
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...
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 ...
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...
If we keep the magnet in a magnetic field, it experiences a force. For electric charges, i.e., electric current, like magnetic poles attract and opposite magnetic poles repel. So, we can say that electric current affects the magnetic pole via the magnetic field. What Instrument Is Used ...