Sagot :
Answer:
1.By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. ... There is another way that uses electricity to make a temporary magnet, called an electromagnet.
2.You will change two variables to make different electromagnets: the number of wire coils around the nail (10 or 20) and the number of D cell batteries (1 or 2).
3.1. brass cap, 2. plastic seal, 3. expansion space, 4. porous cardboard, 5. zinc can, 6. carbon rod, 7. chemical mixture.
4.A 2d nail is 1 inch long, for example, while a 16d nail is 3 1/2 inches long. Each higher number in the penny system represents a 1/4-inch length increase, up to a 12d nail (3 1/4 inches long).
EXPLANATION:
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Answer 1:
By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. If you coil the wire around and around, it will make the magnetic force stronger, but it will still be pretty weak.
2.
The more loops the coil has, the stronger the magnetic field, while the current is flowing. A magnet made from just a coil of wire isn't very strong. But when you coil the wire around an iron nail, the magnetic domains inside the nail line up and make a strong, temporary magnet.
3.
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4.
Common causes of fingernail problems include injury, infection and skin diseases such as eczema and psoriasis. Causes of toenail problems include trauma, ill-fitting shoes, poor circulation, poor nerve supply and infection. Problems with toenails can be successfully treated by a podiatrist.
Explanation:
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