Category: Physics

Where was the node in the Tacoma Narrows Bridge collapse? In the case of Tacoma Narrows, there was a node (no twisting) exactly at the middle of the center span. How long did the Tacoma Narrows Bridge last? After 29 months of construction, a new and much safer Tacoma Narrows Bridge opened on Oct. 14, […]

Why the power magnet is concentrated at the pole? The magnetic field of a bar magnet is strongest at either pole of the magnet. The force is weaker in the middle of the magnet and halfway between the pole and the center. The magnetic field gets weaker the further you get from either pole, so […]

What does fully ionized mean? When referred to an atom, “fully ionized” means that there are no bound electrons left, resulting in a bare nucleus. Regular stars largely contain hydrogen and helium that are fully ionized into protons (H+) and alpha-particles (He2+). Which element would have the highest ionization energy? helium What is Fluorines ionization […]

Is a survey a secondary source? Primary sources are the original documents of an event or discovery such as results of research, experiments or surveys, interviews, letters, diaries, legal documents, and scientific journal articles. diaries and letters. academic articles reporting NEW data and findings. What is secondary data analysis examples? They might search through periodicals, […]

Is there a measure of sharpness? There is no unit of sharpness but instruments are available to measure it. Those instruments provide accurate results with high precision. What is the sharpest knife in the world? Obsidian knife blades: overkill for slicing your sandwich. The thinnest blades are three nanometres wide at the edge – 10 […]

What type of energy is a boy walking in the street? kinetic energy What happen if you hammer a nail in a wood? Answer. When you use a hammer to pound a nail into a board, you transfer kinetic energy to the hammer and the hammer transfers that kinetic energy to the nail. Any form […]

How do we know the nucleus is positive? Rutherford deduced that the atomic nucleus was positively charged because the alpha particles that he fired at the metal foils were positively charged, and like charges repel. In Rutherford’s experiments most of the alpha particles passed straight through the foil without being deflected. Is a nucleus positive? […]

What is the difference between force and energy? A force is any action that tends to alter the state of rest or uniform motion motion of a body. This is essentially Newton’s first Law of motion. Energy is a property of an system that is a measure of the capacity to do work. for example […]

What does the atomic mass tell you? The atomic mass tells us the weight of protons and neutrons. How do you know how many electrons there are surrounding the nucleus of a particular atom? Why isn’t the atomic mass always a whole number? Atomic mass is never an integer number for several reasons: The atomic […]

What goods does a health club provide? Health clubs include a wide variety of equipment such as treadmills, elliptical machines, resistance training machines and free weights so you have numerous options to meet your fitness needs. Why do companies have health clubs? A corporate gym membership allows employees to have either a fully funded or […]