Category: Physics

How can I reduce radiation in my home? These approaches involve reducing both the exposure level and duration. Disable Wireless Functions. Wireless devices — including routers, printers, tablets, and laptops — all emit a Wi-Fi signal. Replace Wireless With Wired Devices. Keep EMF Sources at a Distance. Use Your Smartphone Safely. Prioritize Sleeping Areas. What […]

Does fire destroy atoms? No, atoms don’t burn. No fire on Earth would destroy an atom. Fires typically are a function of the heat of chemical reactions. For instance, burning wood takes a carbon and hydrogen based material and forms carbon dioxide and water out of these atoms, plus heat. How many atoms does fire […]

What has the greatest capillarity? Earth Science Mid Term Review Vocabulary A B Which particle size has the greatest capillarity? silt or clay As permeability increases, what happens runoff decreases What happens to rocks that are transported by running water They become rounded and its volume will decrease What influences water flow? The volume of […]

How many years are in an era? An era in geology is a time of several hundred million years. It describes a long series of rock strata which geologists decide should be given a name. An example is the Mesozoic era, when dinosaurs lived on the Earth. An era is made up of periods, and […]

What are the three variables in a science experiment? There are three main variables: independent variable, dependent variable and controlled variables. What is a controlled variable example? Examples of Controlled Variables Temperature is a common type of controlled variable. If a temperature is held constant during an experiment, it is controlled. Other examples of controlled […]

Do capacitors only work in AC? It storage ability is measured in Farad “F” and “µF” or “nF” units are used for small capacitors. Keep in mind that capacitor acts as an open circuit in DC i.e. it only operable at AC voltages. Are capacitors used in AC circuits? Capacitor Charge and Discharge in an […]

How many hours exactly is a day? 23 hours How is day calculated? Day can be defined as each of the twenty-four-hour periods, reckoned from one midnight to the next, into which a week, month, or year is divided, and corresponding to a rotation of the earth on its axis. Why is a day not […]

What happens to impedance when frequency increases? As the frequency increase, the reactance decreases. As the frequency increases, the impedance increases. These are referred to as inductive reactance and capacitive reactance. Impedance is a crucial concept to understand as most electronic circuits utilize capacitors and inductors. What is the difference between impedance and resistance? Resistance […]

Will a high pH kill fish? Very high (greater than 9.5) or very low (less than 4.5) pH values are unsuitable for most aquatic organisms. Young fish and immature stages of aquatic insects are extremely sensitive to pH levels below 5 and may die at these low pH values. High pH levels (9-14) can harm […]

What is the relationship between living and nonliving parts of an ecosystem? You depend on each other and need the nonliving things in your home, like food, water, air, and furniture. Living things need nonliving things to survive. Without food, water, and air, living things die. Sunlight, shelter, and soil are also important for living […]