Category: Physics

What is an example of state-dependent memory? State-dependent memory refers to improved recall of specific episodes or information when cues relating to emotional and physical state are the same during encoding and retrieval. For example, a person may be alert, tired, happy, sad, drunk or sober when the information was encoded. … What are the […]

Why does losing gaining an electron cause the other element to gain lose atoms? Answer: A positive ion is formed where an atom has more protons than electrons. Atoms and chemical species lose or gain electrons when they react in order to gain stability. Thus, typically, metals (with nearly empty outer shells) lose electrons to […]

How do I find the mean of a frequency table? To find the mean add all the ages together and divide by the total number of children. How do you find the mean median and mode on a histogram? Mode = peak of dataset so, whichever bar of histogram is tallest, the mid point of […]

What is the difference between momentum and velocity? As nouns the difference between velocity and momentum is that velocity is (physics) a vector quantity that denotes the rate of change of position with respect to time, or a speed with the directional component while momentum is (physics) (of a body in motion) the product of […]

How do you use a pulley to multiply forces? To lift something four times heavier, you can use exactly the same force but only if you pull the rope four times further. If you look at what’s happening on both sides of a pulley, and multiply the force by the distance moved, you’ll find it’s […]

What Cannot be burned by fire? Riddle: What can’t be burned in fire, nor drowned in water? Answer: Ice. What is a fire risk? A fire risk is the likelihood of a fire occurring and the consequences of that fire should one occur. 4. The legally defined Responsible Person under the Regulatory Reform (Fire Safety) […]

What are 2 similarities and 2 differences between ionic and covalent bonds? The molecules that are formed from the ionic and covalent bonds are neutral. This is because, in an ionic bond, two opposite charges cancel each other while in a covalent bond, neutral components shared the pair of electrons. Ionic and covalent, both are […]

What note is 786 Hz? The frequency of the third harmonic of middle C is 3 X 262 Hz = 786 Hz. These harmonic frequencies are the same no matter what instrument produces the middle C. How do you reduce harmonics? There are a number of methods to modify adverse system responses to harmonics: Add […]

What are the major types of work? First, let’s take a look at the five kinds of work we do every day: Reactionary Work. Planning Work. Procedural Work. Insecurity Work. Problem-Solving Work. How many types of work do we have? Four Types What is considered an IT project? An information technology project is a temporary […]

What is Pascal law and its derivation? In the 1600’s, French scientist (Methematcian) Blaise Pascal (1623-1662) discovered one fact which is termed as Pascal’s Law. Pascal’s Law. According to Pascal’s Law, “Pressure or intensity of pressure at a point in a static. fluid will be equal in all directions”. What is Pascal’s law state its […]