Question

1)write about the activity to show magnetic force.​

Answer 1

Explanation:

this is the activity to show magnetic forcw

Answer 2

Answer:

when u keep a iron nearby magnet the magnetic force will be reflected to you.

well now we see activity about magnetic force.

TRY THIS AT HOME

Making Ferrofluids

Needed:-

•Vegetable oil

•Shallow dish

•Iron filings (from your local hardware store)

•Napkins

•A magnet

Method:-

●Pour a bit of vegetable oil into a shallow dish, just enough to make a thin film across the bottom.

●Pour iron filings into the oil and mix the two until they have become a thick, sludge-like material. This is your ferrofluid!

●Use a napkin to absorb any excess oil and allow the ferrofluid to become thicker. A good way to do this is to attach a magnet to the outside of the dish. This will solidify the fluid and let you dab away extra oil.

●Attach a magnet to the dish containing the ferrofluid; the fluid will solidify and take the shape of the magnetic field it is in! Removing the magnetic field will allow the ferrofluid to flow like a liquid again.

●When disposing of your ferrofluid, do not pour it down the drain; this could lead to clogged pipes!

observation:-

☆The pattern that a ferrofluid makes depends on the amount of fluid used, the shape of the container it's in and the strength of the magnetic field used. The movies below were made at the MagLab; the ferrofluid is inside a superconducting magnet with a maximum field about 100,000 times stronger than the Earth’s magnetic field. The movies show a ferrofluid in two different situations:

Plastic Petri Upsweep. The ferrofluid is in a plastic dish with a slightly convex bottom, so the ferrofluid moves towards the outer edge. As the movie plays, the magnetic field is getting stronger, and the fluid coalesces into smaller and smaller cone-like structures (which you see from the top down).

hope you got your answer ☆☆☆