Category: Engineering

What is a smart key for a car? A smart key is a key designed for electronically accessing a corresponding vehicle. Some vehicles come standard with a smart key, while other automobiles offer smart key as an upgrade. Smart keys are becoming more popular with newer models. How do modern car keys work? Keyless remotes […]

What is a moment vector? The moment vector of a force vector, , with respect to a point has a magnitude equal to the product of the force magnitude, F, and the perpendicular distance from the point to the line of action of the force, D: M = D F. How do you take a […]

What force is needed to keep an object moving? friction Do you need to continue applying force on an object to keep it moving? In order for there to be continuous motion, there must always be a force acting on it. Why some people say it’s true: Any object which moves eventually comes to stop. […]

What is the use of display block? display: block means that the element is displayed as a block, as paragraphs and headers have always been. A block has some whitespace above and below it and tolerates no HTML elements next to it, except when ordered otherwise (by adding a float declaration to another element, for […]

How do you calculate the magnitude of the resultant force of two forces acting on an object in the same direction? Two forces that act in opposite directions produce a resultant force that is smaller than either individual force. To find the resultant force subtract the magnitude of the smaller force from the magnitude of […]

How is soap a chemical reaction? Soaps are sodium or potassium fatty acids salts, produced from the hydrolysis of fats in a chemical reaction called saponification. Each soap molecule has a long hydrocarbon chain, sometimes called its ‘tail’, with a carboxylate ‘head’. What is soap chemically? Soap is a mixture of sodium salts of various […]

How do you calculate the amount of heat needed to raise the temperature? To calculate the energy required to raise the temperature of any given substance, here’s what you require: The mass of the material, m. The temperature change that occurs, ΔT. The specific heat capacity of the material, c (which you can look up). […]

What are the 3 branches of electrical engineering? Electrical engineering is now divided into a wide range of fields, including computer engineering, systems engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, electronics, and optics and photonics. What is electrical telecommunication engineering? Telecommunications engineers or telecom engineers are expert in managing data such as voice, […]

Can an engine run too cool? Yes an engine can run too cool, IF the thermostat sticks open & permits an excessive amount of coolant to pass to the radiator for cooling, or you’ve used the wrong heat range thermostat, or the new one is bad. Which of the following conditions is the most likely […]

What is a disadvantage of renewable energy? One disadvantage with renewable energy is that it is difficult to generate the quantities of electricity that are as large as those produced by traditional fossil fuel generators. Wind turbines need wind to turn the blades, and solar collectors need clear skies and sunshine to collect heat and […]