What does the coefficient of static friction depend on? Already Coulomb presented experimental evidence that the static coefficient of friction may depend on time, on normal force, on the contact size, on the nature of contacting materials, and on the presence of intermediate lubricant layers. What is the static coefficient of friction? The coefficient of […]
What are the 4 parts of an animal cell?
What are the 4 parts of an animal cell? The components of a cell and their functions are described: membrane, cytoplasm, nucleus. What is the main function of an animal cell? Functions of Animal Cells A cell carries out all the processes of the body which includes producing energy and storing it, making proteins which […]
What is the density triangle?
What is the density triangle? The triangle is divided into three parts, with density occupying the top portion and mass and volume occupying the bottom two portions. The positions of each element of the triangle show us how they relate to one another through the formula above (Density = Mass / Volume, or ρ = […]
Should I charge my new phone overnight?
Should I charge my new phone overnight? “Do not leave your phone connected to the charger for long periods of time or overnight.” Huawei says, “Keeping your battery level as close to the middle (30% to 70%) as possible can effectively prolong the battery life.” The official word is to keep your phone charged – […]
Who gave the best definition of economics?
Who gave the best definition of economics? Lionel Robbins (1932) developed implications of what has been termed “[p]erhaps the most commonly accepted current definition of the subject”: Economics is a science which studies human behaviour as a relationship between ends and scarce means which have alternative uses. What is economics and examples? Introduction to Economic […]
How do lysosomes work?
How do lysosomes work? A lysosome is a membrane-bound cell organelle that contains digestive enzymes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria. If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis. […]
What are the factors affecting thrust?
What are the factors affecting thrust? FACTORS AFFECTING THRUST The factors that affect the thrust of a gas turbine engine include air density, airspeed/ram effect and engine RPM. Why does thrust decrease as airspeed increases? The faster the aircraft speed, the less acceleration is being created on the intake air. Therefore thrust decreases with increasing […]
What is the function of hammer anvil stirrup?
What is the function of hammer anvil stirrup? Vibrations of the eardrum are in turn translated into oscillations of tiny bones (ossicles) found within the middle ear. The Hammer, Anvil, and Stirrup magnify the oscillations and relay this information to the chamber of the inner ear. What is a hammer in a ear? In ear […]
When two variables decrease Together they are?
When two variables decrease Together they are? Positive correlation is a relationship between two variables in which both variables move in tandem—that is, in the same direction. A positive correlation exists when one variable decreases as the other variable decreases, or one variable increases while the other increases. How do you find the relationship between […]
Why do ammeters burn when connected in parallel?
Why do ammeters burn when connected in parallel? Since most ammeter’s measure current through a very small internal resistance; when connected in parallel nearly all the current will travel through the ammeter loop rather than the circuit. This is because the current will choose the path of the least resistance. Hence the ammeter burns. Why […]