Category: Physics

Why do old glass windows look wavy? Contrary to the urban legend that glass is a slow-moving liquid, it’s actually a highly resilient elastic solid, which means that it is completely stable. So those ripples, warps, and bull’s eye indentations you see in really old pieces of glass “were created when the glass was created,” […]

Is lungs part of the circulatory system? The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells. What […]

Can clouds be opaque? Answer: Clouds can be transparent, translucent or opaque, depending on the quantity of water vapor in it. The visual property of a cloud shows up from a distance. Even dense clouds don’t look totally opaque if you are inside it. Why clouds are usually white? Clouds usually appear white because the […]

What does cook until opaque mean? It becomes completely opaque once it’s cooked: What “perfectly cooked” fish means can vary by species, by recipe, and by cooking method, but a good general rule is that the moment it becomes opaque, it’s done. If you cook it beyond that, then it will become dry and unpleasant […]

What is micro size? Micro – 100 micrometers to 100 nanometers. Nano – 100 nanometers to 1 nanometer. Electrical and mechanical devices, components and systems are being manufactured in a variety of. sizes from macro to nano. Which one is bigger micro or macro? These two words and prefixes sound similar, but have opposite meanings. […]

Does sand look and feel the same wherever you go? “The sand on each beach is like a fingerprint — it’s unique to the particular beach where you find it,” said Williams. “The sand’s unique composition, color and grain size are a result of the source rocks it came from, but also a result of […]

How does electricity turn into heat? Electric heating is a process in which electrical energy is converted to heat energy. The heating element inside every electric heater is an electrical resistor, and works on the principle of Joule heating: an electric current passing through a resistor will convert that electrical energy into heat energy. Do […]

Can you do t bar rows without handle? While the T bar row is usually done with a neutral grip, you can perform several t bar row substitute exercises by using a bar attachment. The one we want to look at involves using a pronated grip. This will change the biomechanics of the t bar […]

What are the rules of presentation? 8 Golden Rules for a Great Presentation #1 Use max six lines per slide. #2 Ideal font size is 32. #3 Use bright colors. #4 Use slides you really need. #5 Use max one line of text per bullet. #6 Tell a narrative story. #7 Use your website identification. […]

What are two ways to find the volume of a rectangular prism? To find the volume of a rectangular prism, multiply its 3 dimensions: length x width x height. The volume is expressed in cubic units. How do you find the height of a rectangular prism with the volume? Height of Prism The volume of […]