Category: Physics

Does higher frequency mean better sound? The answer to this question is clearly no. You might suspect, that the higher the frequency, the louder we perceive a noise, but frequency does not tell us how loud a sound is. Intensity or loudness is the amount of energy of a vibration and is measured in decibels […]

Can secondary ignition shock kill you? Tech A says that a secondary ignition shock is enough to kill you. Tech B says that a secondary ignition shock does not have enough current to kill you. Who is correct? Tech A says that it is easiest to set the spark plug gap on all the plugs […]

Can the world mean universe? Scientific cosmology can be defined as the science of the universe as a whole. In it, the terms “universe” and “cosmos” are usually used as synonyms for the term “world”. One common definition of the world/universe found in this field is as “[t]he totality of all space and time; all […]

Do I need a carbon monoxide detector if I have no gas? What kind of appliances can cause carbon monoxide poisoning? And because cars and other gas-powered equipment create carbon monoxide, virtually every home should have a CO detector, even if there are no fuel-burning appliances in the house. Are plug in carbon monoxide detectors […]

How is flux calculated? The total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The electric flux through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field. How does the […]

How do you know if a hypothesis is supported? A hypothesis is a proposed idea that may explain an observation or phenomena. It is verified by testing it. If the data supports the hypothesis, then we consider the hypothesis to be verified and true. Can a hypothesis be a question? Before you make a hypothesis, […]

What are two examples of a medium? An example of a medium is a metal spoon sitting in a cup of hot tea that is too hot to touch. An example of a medium is a newspaper from the combined media form of newspapers, television, magazines, radio and the Internet. What is the distance between […]

How hard is 30 HRC? 30 HRC is the hardness of the steel. It’s not a type of steel. That being said, 30 HRC is atrociously soft. Its edge would dull very quickly if you used it to cut anything. Which is harder HRB or HRC? The Rockwell C scale is usually abbreviated HRC (Hardness […]

What is the first thing you need to do when drawing Lewis structures? How to Draw a Lewis Structure Step 1: Find the Total Number of Valence Electrons. Step 2: Find the Number of Electrons Needed to Make the Atoms “Happy” Step 3: Determine the Number of Bonds in the Molecule. Step 4: Choose a […]

Why shadows are formed by opaque objects? Shadows are formed because light travels in straight lines. Shadows are formed when an opaque object or material is placed in the path of rays of light. The opaque material does not let the light pass through it. The light rays that go past the edges of the […]