You have to add AIR.
dan
It is not possible to add something to the barrel to make it lighter, as the weight of the barrel would still be the same regardless of what is added to it. In order to make the barrel weigh less, you would need to remove some of the water, or empty the barrel entirely.
you add sand because it absorbs water and making it lighter
I don't think soo
A hole
You can add a hole. The water will leak out.
you have to add water
Holes
Hole
Make a hole in the bottom center of a bucket, fill the bucket with water, move bucket in a steady circular motion, then let it go...
A steel needle will float in water as a consequence of surface tension. A boat floats in water because it displaces sufficient air to make its effective density less than that of water. Usually though, solid, spherical objects, for example, will float if they are made of materials that are less dense that water, which is to say that they have less mass per unit volume than water. In ordinary, imprecise language we say things weigh less than water.
Well it is according to faraday's laws of electromagnetic induction. Whenever a coil rotates in a magnetic field,magnetic flux passing through the coil will get changed, and faradays first law states that whenever there is a change in magnetic flux linked with the coil, a emf is induced in it. So due to this emf bulb will light up. Well if you want the change in flux to be explained in more general way I can explain it like this: Suppose it is raining and you have kept a bucket to accumulate the rain water in it. Initially keep the bucket vertical, so maximum amount of rain water will drop into bucket. Now start tilting the bucket, the waterdrops entering the bucket will start decreasing. now make the bucket horizontal, so now no drop will enter into the bucket. So number of water drops entering the bucket depends on inclination of bucket. Here rainddrop is similar to magnetic flux and bucket is similar to coil. So as you rotate the coil, flux linked with the coil changes.
To make a model showing tidal energy you will need a bucket, copper wire, magnets, a paddle, light bulb, and water. Place the magnets inside wire coils and attach the wire to the light bulb, fill the bucket with water, and use the paddle to make waves. The energy produced by the waves moving the magnets will create enough power to light the light bulb.
heat
40
A hole.
Make a hole in the bottom center of a bucket, fill the bucket with water, move bucket in a steady circular motion, then let it go...
a hole
Assuming an ambient temperature of 293.15K then adding around 2608kJ of energy should do the trick nicely.
A hole!
The key to make a boat float is that the boat should weigh less (or have less mass) than the water it displaces.
all you have to do is put the liquid fertilizer in a bucket and put water in a metal bowel in the bucket
putting ice into water: the ice and water are in contact with each other over a large surface area this allows more efficient heat transfer. putting a bucket of water into ice: Energy in the form of heat must pass through the bucket to the ice which is more difficult. Also the is less contact area with the solid ice sitting against the bucket than if water was in contact with the bucket. This is why when u make an ice bath to cool something down in you add water, it increases the contact area.
put very hot water in a bucket and put there hand in the bucket and when someone is sleeping put cold water on to there face and make them go
Fill a bucket with water, then mark the water level on the bucket with a waterproof marker. Set the bucket next to the pool. Next, mark the water level of the pool. After a couple of days, check the marks on the bucket and the pool. They should measure the same (having lost the same amount of water due to evaporation). If the pool level has dropped more than the level of water in the bucket, you have a leak somewhere. (By the way, make sure your dog hasn't drank out of the bucket, or pool!)
You make them: -Items Needed- Bucket Of Water Pot Of Flour Fire or cooking stove --------------------------------- What to do: Use bucket of water on pot of flour to make bread dough then use bread dough on fire/stove to make bread.