Why does it feel like the earth is shaking?

Why does it feel like the earth is shaking? Internal vibrations are thought to stem from the same causes as tremors. The shaking may simply be too subtle to see. Nervous system conditions such as Parkinson’s disease, multiple sclerosis (MS), and essential tremor can all cause these tremors. Sometimes, anxiety can cause or worsen the […]

Is the mains AC or DC?

Is the mains AC or DC? AC stands for ‘alternating current’ which means the current constantly changes direction. Mains electricity is an AC supply, and the UK mains supply is about 230 volts. It has a frequency of 50Hz (50 hertz), which means it changes direction and back again 50 times a second. What is […]

At what temperature will outside faucets freeze?

At what temperature will outside faucets freeze? 20 degrees How do I stop my outside faucet from freezing? Cover the exterior faucet with an insulated slip-on cover. This will prevent any remaining water from freezing. Exterior pipes should be wrapped with insulation tubing, which can be found at your local hardware store. Do not wrap […]

Why do waves slow down in shallow water?

Why do waves slow down in shallow water? In shallower water near the coast, waves slow down because of the force exerted on them by the seabed. If a wave is approaching the coast at an angle, the nearshore part of the wave slows more than the offshore part of the wave (because it’s in […]

What is the shortest wavelength of radiation?

What is the shortest wavelength of radiation? Gamma Rays What is the shortest wavelength color? violet light What colors do primary colors make? Color Basics Three Primary Colors (Ps): Red, Yellow, Blue. Three Secondary Colors (S’): Orange, Green, Violet. Six Tertiary Colors (Ts): Red-Orange, Yellow-Orange, Yellow-Green, Blue-Green, Blue-Violet, Red-Violet, which are formed by mixing a […]

Do positive and negative charges cancel?

Do positive and negative charges cancel? In Gauss’s Law for electric fields it’s the net flux that matters and an equal amount of positive and negative charge will cancel. In everyday life pretty much everything appears to lack any kind of charge despite being made up largely by particles that do have charge. How can […]

What is the best solvent for carbon disulfide?

What is the best solvent for carbon disulfide? Carbon disulfide is a colorless liquid, with an chloroform like smell when pure. Impure CS2 has a yellowish color and has a putrid smell. It is insoluble in water, but soluble in many organic solvents, such as benzene, ethanol, diethyl ether, carbon tetrachloride, chloroform. What is the […]

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