Category: Physics

How do I test my water table level? The most reliable method of obtaining the depth to the water table at any given time is to measure the water level in a shallow well with a tape. If no wells are available, surface geophysical methods can sometimes be used, depending on surface accessibility for placing […]

Can melted butter be refrigerated again? To retain its color, texture and hardness you must keep it in the fridge or in a very cool room. If you have leftover melted butter from a cooking or baking project you can put it back in the fridge and it will harden, but it will also remain […]

What do you call the problem in a story? CONFLICT. Every story has a conflict to solve. The plot is centered on this conflict and the ways in which the characters attempt to resolve the problem. When the story’s action becomes most exciting, right before the resolution, it is called the climax. What is a […]

What colors does Brown not go with? This is because brown is a warm color, which would not look good with blue or purple, which are cool colors. What is the best wall color for brown furniture? If you have a dark brown sofa or other furniture, the best way to complement them is with […]

When would you use a perspective view? Answer: You would use isometric when drawing things from above, like a house plan, while perspective is used to show what the object’s entire design appears to be. What is drawing in perspective? Perspective is what gives a three-dimensional feeling to a flat image such as a drawing […]

Do trees grow out of the air? But the truth is, trees are actually formed largely out of the air. (Yes, air!) Trees, and all photosynthesizing plants, use the energy of the sun to split atmospheric carbon dioxide into its constituents: oxygen and carbon. And carbon is the primary building block of the tree — […]

What type of material does not allow any light to pass through? opaque Which surface is best at reflecting light? glass mirror Why can light pass through some materials and not others? Opaque materials do not allow transmission of light waves. In other words, we can’t see through an opaque object. We can only see […]

What period in the periodic table is iron found in? Fact box Group 8 1538°C, 2800°F, 1811 K Period 4 2861°C, 5182°F, 3134 K Block d 7.87 Atomic number 26 55.845 State at 20°C Solid 56Fe How many types of iron are there? two What are two iron types? Heme iron is found in meat, […]

Do I need to discharge a capacitor? You must discharge the capacitors before working on power supply circuits so you won’t get shocked. There are three different ways to discharge large filter capacitors in a power supply: with a screwdriver, the leads of a socketed 100 watt light bulb, and the leads of a high-wattage […]

Why are steam engines inefficient? Steam engines are extremely inefficient, wasting around 80–90 percent of all the energy they produce from coal. That means they have to burn enormous amounts of coal to produce useful amounts of power. It’s inefficient because energy is wasted as the heat and steam travel from the fire, via the […]