How can we tell if something has energy?
Technically, everything has energy, no matter how cold you try to make it. The energy of an object, if not all else externally applied, comes down to internal energy, which is the sum of its kinetic [motion of particles] and potential [vibration of particles] energy. The presence of this energy makes it very hard to bring down the energy of an object to absolute 0. But even at 0 degrees, an object still has what is known as 0 point energy, something that we're just not used to. For example, helium has enough zero point energy at absolute 0 to remain in a liquid state! You can also look at it in another way. E = mc^2. If you are matter, you are energy. So it's difficult to have mass without 'having' energy. Try specifying a specific type of energy. Cheers!
How can you tell if a something is too hot to touch?
As we all know, Heat can be transferred through conduction, convection and radiation. Here, touching will be considered as conduction. So, if a substance is very hot, definitely it will have convective and radiative heat transfer. So, going closer to it before actually touching and trying to sense the temperature can be better option.Another household technique which we all have seen is since our childhood. Mother while cooking chapati or curry adds water to the utensil to check whether the utensil is heated enough for cooking. So, if you are bothered about not touching (which means avoiding skin burn), just try with water.Indian subcontinental often pour water on their bike seats before sitting while in summers.
How can you tell if something is a peroxide?
You need to understand the periodic table. Elements in group 2, like Mg, form only +2 ions. This makes it easier to see that if the oxygen in MgO2 was oxide ion, then the Mg would need to have a +4 charge on it which is not possible with chemical reactions. O2(2-), or peroxide, has a -2 charge. If the compound is MgO, it will be magnesium oxide. The compound you have listed in the problem must be magnesium peroxide. Another clue is that oxygen is normally -2 in its ions. The only time O is -1 is in peroxide and, of course, there are 2 oxygen atoms in that ion making the total charge on peroxide -2.
How do I tell if there's something wrong with me?
I can't speak from personal experience, but I have had a couple friends who are, well, a little out there. Now I think a lot of it is just being a teenager. Honestly it's super stressful being a high school student. You have to deal with grades and difficult classes, but also people. There are people I can't stand to be around and constantly talk sh#t about me behind (and in front of) my back. Sometimes I don't even know if my friends are really “good friends”. Now of course this could all just be teen hormones, but if you really think there might be a problem. (Like if you need to ask strangers on the internet whether it's normal or not) then maybe you should talk to someone. I don't know if you have a strong relationship with your parents ( i hope you do), but if not, talk to your best friend or anyone else you know that truly cares about your well-being. These are the people who you should talk to, because they might not know the answer, but they are going to try a lot harder than even the most diligent Quoran in the internet. They will have long conversations with you about why you feel like something is wrong with you, and if it's serious, they will be with you as you try to find more serious help. But like I said, I'm not the expert, so whether you find this useful is obviously up to you.
How can one tell if something is truly random?
First, let's agree that randomness, unpredictability, nondeterminism and nondirected are each distinct concepts. Deterministic systems can be impossible to predict. Biological mutations can be both predictable and deterministic, but they are nondirected. Random systems can be predictable, unpredictable, deterministic or nondeterministic. Randomness describes the distribution of the results. If you use a good deterministic random number generator the results will have certain mathematical characteristics while being completely deterministic (and, depending on what you're predicting, completely predictable). If you use physical effects for random number generation the results may be much less random (in that the distribution of the results is not nearly as good) and, depending on what you're predicting, this may result in the system being more predictable or less predictable.So let's start with "truly random". If you're looking at a sequence of integers and a mathematical description of a distribution, you can estimate how confident you are that the sequence came from the distribution. If the distribution has some notion of probability, the level of confidence never reaches 100%. Thus, while there may be "truly random" processes out there, we're not able distinguish them with certainty from "nearly truly random" processes.I don't know quite what you mean by "absolutely unpredictable". Does that mean every prediction fails? Does that mean at least one prediction has some chance of failing?
How can you tell if something is wrong or right? Do they exist?
On a personal level, Right and wrong, as concepts, are functions of circumstances. A move perfectly logical, even obvious under one set of circumstances can be an equally obvious folly under the circumstances of hindsight or later introspection.There's no absolute right and wrong. Our experiences shape our beliefs, and our beliefs deem the rights from the wrongs. No one has experienced it all, no one knew how it'd turn out when they were doing it.You took a risk, trusting your instincts. That's what life is.Every wrong decision is a right decision that didn't click.
How can i tell if something is stainless steel?
it should be kinda heavy, and hard if you can scrap a pc off with a knife its aluminum , stainless steel has a high content of nickel, and will have a shine to it , alum is kinda dull looking,
How do you know something is “real”?
There are two interesting terms that we see here: ‘know’ and ‘real’.‘Knowledge’ pertains to epistemology and ‘Reality’ pertains to metaphysics as subjects under inquiry.EpistemologyFrom the epistemology angle, we collide with this question when we deal with philosophical skepticism (think Dark City and the Matrix).The challenge here is even if there is an external world, how can we conclusively know anything about it at all?MetaphysicsFrom the metaphysics angle, we collide with this problem whem we try to grasp the limits of human access to the world (our mere five senses and limited reason) - that’s all that we have despite whatever technologies and tools we use (at least at this time - I think a person has echolocation now so six senses at the most haha).For example, if Plato were right how could we as physical beings access an immaterial reality?But we also run into other problems. How can reality and language even interact coherently (Wittgenstein)?What are the limits and operations between internal first-person perspectives (and all that is part of that from a neuro-science, linguistics, qualia, phenomenal, and fact standpoint) and third-person God’s eye perspectives (which approximates our understanding of reality)? That’s Kant.