Is a pencil chemical change? When you sharpen your pencil, you have only caused a physical change. The sharpener has cut off some of the wood and maybe also some of the graphite, but the atoms of the wood and graphite have not changed chemically. Is snow a physical or chemical change? When rain turns […]
Do electrons know they being observed?
Do electrons know they being observed? This process is sometimes referred to as decoherence. We also see phrases such as “wavefunction collapse”. By virtue of such an interaction of a quantum system with a classical measurement device, one could quite misleadingly assert that the electron “knows” it is being observed. It doesn’t. Why do wave […]
Will a Jump Starter start a dead battery?
Will a Jump Starter start a dead battery? A car jump starter with 500 cold-cranking amps should be able to start just about any vehicle with a dead battery. What happens if you try to jump a car wrong? When the jumper cables are incorrectly connected, the polarity of the electrical system on the vehicle […]
Do humans and plants share a common ancestor?
Do humans and plants share a common ancestor? Originally Answered: Do plants and humans have a common ancestor? Yes. The last common ancestor would have been an early eukaryote protist, around 2 billion yeras ago. What is the most intelligent single celled organism? This Single-Celled Animal Makes Complex ‘Decisions’ Even Without a Nervous System. In […]
What if there is two medians?
What do bacteria use for movement?
What do bacteria use for movement? flagellum What are two foods that bacteria help make? Bacteria are used to make food, such as cheese and yogurt, and they can also help us break down harmful substances in the environment. Scientists created a type of bacteria that could gobble up oil from oil spills. What are […]
What are 3 organisms?
What are 3 organisms? Organisms are classified by taxonomy into groups such as multicellular animals, plants, and fungi; or unicellular microorganisms such as protists, bacteria, and archaea. What are the 8 organisms? There are different types of organisms, including -producers, consumers, herbivores, carnivores, omnivores, scavengers, parasites, predators, and decomposers. What type of organisms are humans? […]
How is flow rate related to radius?
How is flow rate related to radius? To put this relationship into words: At a given temperature, flow rate through a tube or pipe is inversely proportional to the length of the tube the viscosity of the liquid. Flow rate is directly proportional to the pressure gradient and the fourth power of the radius of […]
Why there is a need for scientific knowledge in education?
Why there is a need for scientific knowledge in education? Problem-solving and critical thinking are two of the most important skills students learn in school. In this way, science is one of the most important subjects students study, because it gives them the critical thinking skills they need in every subject. What is the impact […]
Do divers breathe oxygen?
Do divers breathe oxygen? Contrary to popular belief, scuba divers don’t only breathe oxygen underwater. After all, we don’t breathe pure oxygen above water either. Divers go way deeper and explore much longer with mixtures such as nitrox, heliox, and hydrox as these are safer alternatives to simple compressed air. Can oxygen get you high? […]