Why does this happen? When you heated the food, you also heated the air inside the container. Additionally, you converted some of the liquid water in the food into water vapor. Both of these effects, heating the air and adding water molecules to it, increased the gas pressure inside the container. Though you might not have noticed, the pressurized gas then leaked out of the plastic container through tiny gaps between its body and lid.
When you then took the container out of the microwave oven and exposed it to cooler room air, the temperature of the container and its contents decreases. The air cooled and some of the moisture in that air condensed back into liquid water. Both of those changes caused the gas pressure inside the container to decrease.
While you might expect air to then leak back into the container, modern plastic containers and their lids tend to act as one-way valves — they leak air out, but not in. With low pressure inside the container and atmospheric pressure outside, there are substantial inward forces on the surfaces of the container and the container shrinks inward. That same effect occurs whenever you cool the gas inside a sealed plastic container — for example, a plastic bottle that you filled with hot water and then closed tightly.
The dropping temperature lowers the pressure of the gas and may even cause some of that gas to condense into liquid. With less pressure inside the container than outside the container, the container experiences inward forces that dent it inward. Ultimately, the container dents inward until the net forces on its surfaces become zero. It reaches that new equilibrium situation new balance between forces because compressing the gas inside it increases the pressure of that trapped gas and because the bottle or container itself has some elasticity that fights the denting.
Either way, the container ends up looking squished. A floating object is displacing fluids that would otherwise fill the space it occupies. For example, a ball floating motionless on water is displacing the water and air that would normally be where the ball is.
If we remove the ball, water and air will fill its space and soon everything will be motionless again. It does have a weight! But its weight is supported by the water and air that surround it. This unbalanced pressure produce a net upward force on the ball-shaped portion of water and air. When we put the real ball back where it was and let it again float motionless on the water, the surrounding water and air continue to exert the same buoyant force on the real ball that they exerted on the ball-shaped portion of water and air.
Which brings me to your question. Here are two identical balls floating motionless on fresh water left and on salt water right. In each case, the ball is experiencing a buoyant force that exactly cancels its weight. To obtain that exact buoyant force, the ball must displace a portion of water and air that weighs exactly as much as the ball weighs.
Salt water is denser than fresh water, meaning that salt water has more mass per volume more kilograms per liter than fresh water. A liter of salt water consequently weighs more than a liter of fresh water. Displacing a liter of salt water therefore produces a stronger upward buoyant force than displacing a liter of fresh water. In each case, the ball finds just the right mix of water and air so that it displaces exactly its own weight in those two fluids.
To maintain a steady average temperature, the earth must radiate away heat just as fast as it receives that heat from the sun. God is a teacher who, by our standards, seems strange.
He gives the test first, and then He gives the lesson. We learn through affliction. Think about Joseph in the Bible. Think of all the terrible things that happened to Joseph. He was maligned by his brothers. He was thrown into a pit and sold as a slave; he was lied about and accused of rape. Then he languished in prison. But Joseph, as he looked back, said something that is much like Romans God is not dead.
He is alive and well. It is God who made this promise. He is the cause of it. Condition The fourth thing is the condition of the promise. The promise has a condition. What is the condition? The condition is that we must be lovers of God.
Haters of God cannot claim this promise. Some people may be able to sing better than we can sing. Others may be able to teach better than we can teach, preach better than we can preach, lead better than we can lead, give more than we can give.
Berean Study Bible And we know that God works all things together for the good of those who love Him, who are called according to His purpose. Berean Literal Bible And we know that God works together all things for good to those loving God, to those being called according to His purpose, King James Bible And we know that all things work together for good to them that love God, to them who are the called according to his purpose.
New King James Version And we know that all things work together for good to those who love God, to those who are the called according to His purpose. New American Standard Bible And we know that God causes all things to work together for good to those who love God, to those who are called according to His purpose.
NASB And we know that God causes all things to work together for good to those who love God, to those who are called according to His purpose. Amplified Bible And we know [with great confidence] that God [who is deeply concerned about us] causes all things to work together [as a plan] for good for those who love God, to those who are called according to His plan and purpose. Christian Standard Bible We know that all things work together for the good of those who love God, who are called according to his purpose.
Holman Christian Standard Bible We know that all things work together for the good of those who love God: those who are called according to His purpose. American Standard Version And we know that to them that love God all things work together for good, even to them that are called according to his purpose. Aramaic Bible in Plain English But we know that he helps those who love God in everything for good, those whom he preordained to be called.
Contemporary English Version We know that God is always at work for the good of everyone who loves him. They are the ones God has chosen for his purpose, Douay-Rheims Bible And we know that to them that love God, all things work together unto good, to such as, according to his purpose, are called to be saints.
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