an electromagnet's strength depends on the amount of current that flows through it. Permanent magnets can lose their magnetic properties such as their ability to give off a magnetic field when they're heated to a certain temperature.
7 Things to Do with Old Speaker Magnets: Disposal, Repurposing, and More Written by Nicole Levine, MFA Last Updated: April 18, 2022 References Are you trying to figure out what to do with some old speaker magnets? If you've salvaged the magnets from some dead speakers or have stumbled ...
Why do magnets repel each other? What types of materials affect a magnetic field? What is the electromagnetic force? What causes the Sun's magnetic field? What is the magnetic field formula? How can a magnetic field produce an electric current? How can a permanent magnet lose its magnetism?
We are investigating the effect of friction on the distance travelled by a car, so the ramp surface is our variable. Everything else must be kept constant. Do not push the car; just let it go without any force behind it. How does the surface of the ramp affect the distance travelled?
athey believe that these things will act as magnets and "pull" them into the university. 正在翻译,请等待... [translate] a冰箱里有香蕉 葡萄 菠萝 土豆 苹果 鸡蛋 牛奶 In the refrigerator has the banana grape pineapple potato apple egg milk[translate] ...
work in general. While most people know that metals are attracted to magnets, in reality, "ferromagnetic" metals like iron are the main metals that are attracted to them, although paramagnetic and ferrimagnetic (with an "i," not an "o") metals do have a weak attraction to magnets, too....
Why doesn't a magnetic force ALWAYS act on a particle which moves in a magnetic field? What is the electric flux through (a) surface 1 (b) surface 2 ? What is different about the magnetic poles of common refrigerator magnets and those of common bar magnets?
BEC was created artificially by using a combination of lasers and magnets at super low temperatures that are just a few degrees above absolute zero (zero kelvin). At these temperatures, molecular motion almost stops, so there's almost no kinetic energy being transferred from one atom to another...
Magnet schools began in the late 1960s and early 1970s as a tool to further academic desegregation in large urban school districts. Magnets were intended to attract students from across different school zones. To accomplish this, magnet schools had to do two things. First, they had to open ...
Can a Contact Force act without two objects touching? No, by definition, a Contact Force requires two objects to be in physical touch. 2 Why do magnets attract certain metals without touching them? Magnets exert a magnetic Field Force, which can attract certain metals without direct contact. ...