Category: Physics

Is pressure times volume energy? In engineering applications, the units of P-V energy, also called flow energy, are the units of pressure times volume (pounds-force per square foot times cubic feet), which equals foot-pounds force (ft-lbf). The specific P-V energy of a substance is the P-V energy per unit mass. Does gas have more potential […]

What is any living thing with one or more cells? A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms. What parts of the cell destroys harmful substances or worn out? Lysosomes, which are found […]

What is difference between positive and negative potential? The potential energy for a positive charge increases when it moves against an electric field and decreases when it moves with the electric field; the opposite is true for a negative charge. What kind of superposition is used for electric potential? The summing of all voltage contributions […]

How do you solve equations with brackets? How do you solve an equation with brackets? Multiply out the brackets and remember that everything inside the brackets will get multiplied by 2. 2 × a + 2 × 5 = 16. You get: 2a + 10 = 16. Next, do the inverse of + 10, so […]

How does El Nino affect human health? El Niño conditions can cause a wide range of health problems, including disease outbreaks, malnutrition, heat stress, and respiratory diseases. Above-average rainfall caused by El Niño can also cause floods and increase diseases spread by mosquitoes, such as malaria, dengue, chikungunya and the Zika virus. What are the […]

What is a bad serve in tennis called? The Association of Tennis Professionals (ATP) is the governing body of men’s Tennis! When you win a game during which your opponent was serving that is called a break in Tennis! The receiver is said to have a break point whenever he is in a situation where […]

What store of energy is powering the sun? The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun’s core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom. What are the five food groups? As the MyPlate icon […]

Can air bubbles damage screen? Air bubbles will not damage the screen. It may cause older resistive touch screens not register a touch. Resistive touch screens require pressure to register touch. Why do air bubbles form in boiling water? Boiling begins near the source of heat. When the pan bottom becomes hot enough, H2O molecules […]

What can I use to calibrate a 500g scale? For kitchen scales you can use plain old water, distilled water if you have it. 1 cc of water weighs 1 gram; so 500 cc’s = 500 grams. How many nickels is 500 grams? 100 nickels What weighs about 1 kilogram? An unabridged dictionary, a medium […]

Can you use a paperclip as wire? While a professional electrician will always use special components when installing or repairing an electrical system, such as the lights in a house, you can make an electrical circuit with paper clips and other common household items. Strip half an inch of wire from each end of the […]