What is the most expensive type of natural disaster? Hurricane Katrina Which state has the fewest natural disasters? Michigan Which country has the most train accidents? Germany What was the world’s worst train crash? The Great Train Wreck of 1918 occurred on July 9, 1918, in Nashville, Tennessee. Two passenger trains, operated by the Nashville, […]
Does light lose energy as travels?
Does light lose energy as travels? A photon doesn’t lose energy unless it collides with a particle. Photons can scatter off interstellar electrons, for example. (Perhaps you were thinking about particles, like electrons, losing energy “in transit” in a vacuum. Photons carry energy, but they don’t lose energy just because they travel. Why did Einstein […]
Why do magnetic fields resist change?
Why do magnetic fields resist change? When a voltage is generated by a change in magnetic flux according to Faraday’s law, the polarity of the induced voltage is such that it produces a current whose magnetic field opposes the change which produces it. If it is decreasing, the induced field acts in the direction of […]
What is the method of heating and cooling curve of water?
What is the method of heating and cooling curve of water? In the heating curve of water, the temperature is shown as heat is continually added. Changes of state occur during plateaus because the temperature is constant. The change of state behavior of all substances can be represented with a heating curve of this type. […]
Which phenomenon is responsible for making the path of light visible?
Why is a machine useful?
Why is a machine useful? Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever. What is the ratio of load? Ratio of load to the […]
Is C++ used in quantum computing?
Is C++ used in quantum computing? Quantum++ is a modern general-purpose multi-threaded quantum computing library written in C++11 and composed solely of header files. The library is not restricted to qubit systems or specific quantum information processing tasks, being capable of simulating arbitrary quantum processes. Can quantum computers run programs? Quantum programming is the process […]
How do elements and compounds differ?
How do elements and compounds differ? Substances can be categorised as either elements or compounds. Both of these are made up of atoms, the only difference is an element is made of one type of atom whereas compounds are made of two or more different types of atoms. What are 3 common properties of a […]
What is the velocity of the highest point?
What is the velocity of the highest point? At the peak itself, the vertical velocity is 0 m/s; the velocity vector is entirely horizontal at this point in the trajectory. These concepts are further illustrated by the diagram below for a non-horizontally launched projectile that lands at the same height as which it is launched. […]
Which of the following is considered direct evidence?
Which of the following is considered direct evidence? Direct evidence proves or disproves a fact directly. An example of direct evidence is eyewitness testimony, where a witness describes exactly what he or she saw, heard, and or experienced. What are the four methods to search a crime scene? Following are the basic search methods, usually […]