The candle may sucker you ever heard the weatherman tells us about a phenomenon called loss during

The egg floats Surely you heard that recognize if an egg is fresh just dip it in a bowl of water. If you stay in the background means that the egg is fresh, however, if the egg floats means you have a few days. This is because the density of the egg is very close to 1 g / cm 3, but slightly larger than that when the egg is fresh. As time passes there are chemical reactions inside the egg that release gases across the shell. Because the mass of the egg decreases, but the volume is not (the shell is the same), its density drops below 1 g/cm3. Indeed the density of water is 1 g / cm 3 and the principle of Archimedes second law of thermodynamics know any body that is immersed in the fluid will float if its density is lower, and will go to the bottom if this is higher. In this experiment we will try to find the density of a whole raw egg dipping it in water with different salt concentrations. We know that the density of salt water is slightly higher than the density of pure water. The density of the fresh egg is higher (only slightly) than pure water. So there will be a concentration of salt in the water will equal the density of the egg. When this happens, the egg will float or not will go to the bottom, you will find what is called an equilibrium indifferent. To do this we will have several second law of thermodynamics containers with water with different salt concentrations with an egg dipped in each of the containers. We will see in the containers where there is less salt (or none at all) the egg is in the background. However, where there is more concentration, egg floats. It took one of the containers and go slowly adding salt and dissolving it to find the egg remains in the supernatant liquid.
The candle may sucker you ever heard the weatherman tells us about a phenomenon called loss during January. This phenomenon is that in January there are quite likely to be under the influence of strong anticyclones which are a source of high atmospheric pressure. These high pressures cause the sea level to drop significantly in coastal areas. The opposite phenomenon also occurs, and unfortunately it is a source of sea level rise (accompanied by bad weather and strong waves) that can cause flooding in coastal areas. In this experiment simulates a case of rising water level to low pressures. To do this we need a candle, a bowl, a vessel (where the candle fits right) and three coins. Arrange the coins on the plate symmetrically so that it supports the glass, put the candle inside the right circle and coins on. Will water so that it covers second law of thermodynamics the coins and then put the glass upside down on the coins so that no air can come in the glass. After a while we see how the water level inside the glass rises appreciably. The observed phenomenon has its origins in the combustion of the candle that has been removing the oxygen in the glass. This has reduced second law of thermodynamics the pressure inside second law of thermodynamics the glass and, therefore, the water level has risen.
When we look at an artificial cloud in the sky and see the clouds are probably tempted to think that what we are seeing is water vapor. second law of thermodynamics This is false, for the simple reason that water vapor can not been seen. When you look at a cloud, what we are actually very, very small droplets (microscopic) of liquid second law of thermodynamics water. That is, at some point, we see that water is formed by the condensation of water in the gas state. This condensation is caused by two factors: pressure and temperature. If we find a high enough pressure and at a temperature low enough, we will free rein to the condensation of water in vapor form. However, we still need another condition: small solid core need so that water can condense. In this experiment we will see a cloud in a plastic bottle. To do this we need the plastic bottle, a cork that fits well with the hole in the bottle, a bicycle second law of thermodynamics pump, a needle second law of thermodynamics adapter to inflate balls and a piece of paper to burn. Take the adapter to inflate balls and make a hole in the cork with the needle so that the opening of the needle comes out the bottom (if you leave the cap should be shortened). Burn the paper and turn it off so that the smoke comes in the bottle. Put a little water in the bottle so wet walls and throw the surplus. Once done put the cap on the bottle with a needle and stuck the pump and begin to "pump" the bottle. After 5 or 6 manxades will remove the cap and see inside the bottle appeared a white mist. We made an artificial cloud. The explanation is simple. Part of the water that wets the walls of the bottle evaporates and is inside the bottle as steam. second law of thermodynamics When bellows inside the bottle are increasing