haha no. What are you trying to protect against? renegade pieces of steel attacking your computer? if youre talking about one of those ferrite/ferrous round magnets that are stuck around various usb cables, those protect against interference caused by the magnetic fields around AC power cables.
creates magnetic force
Placing a magnet near them for a short time can corrupt or delete the data; this also applies for computer hard-drives and some other storage devices.
You can't physically "break" a computer (mother board) with a magnet. However, you can corrupt the hard drive, which is essentially breaking it. But you'll need an extremely strong electromagnet because modern hard drives are shielded against such threats. In other words, a refrigerator magnet won't do it.
static, static can damage the things inside just like a magnet.
You can identify the polarities in a round magnet by placing another magnet next to it. If they repel they have the same polarity and if they are attracted the polarity is the same.
Your computer uses magnetism to store information. The binary code used by your computer to transmit information at the most basic level, 1s and 0s, are stored by your computer in the form of magnetic charges. 1s are represented by magnetized bits and 0s are represented by unmagnetized bits. (8 bits make up a byte)Due to this, putting a magnet on your computer may damage information stored in it, as well as possibly corrupting the ROM in your motherboard. ROM is the read only memory that your computer uses to know how to start up.For these reasons and others, I would highly recommend not putting any magnets anywhere near your computer.
Placing the material in a strong magnetic field will align its' domains. You can swipe a metal tool on a magnet and make it a magnet.
Iron can be separated with an (electro)magnet.
electromagnetic induction
knife shows magnetic property when it remains physically contact with magnet for sometime.this type is known as temporary magnet
No, but placing a video tape on a speaker will ruin the tape
Unless you scratch the disk while placing the magnet on the disk, then nothing will happen. A magnet would have to be powerful enough to extract the hemoglobin from human bloodcells to be able to effect the disk.