Category: Physics

How are art and science similar and different? Arts and science are similar in that they are expressions of what it is to be human in this world. Both are driven by curiosity, discovery, the aspiration for knowledge of the world or oneself, and perhaps, as the conceptual artist Goshka Macuga said on her recent […]

What is the magnetic domain theory? The domain theory states that inside a magnet there are small regions in which the magnetic direction of all the atoms are aligned in the same directions. These regions are known as domains. Within a domain, the aligment of the magnetic direction is the same. How do you identify […]

Are moles conserved in a chemical reaction? A chemical reaction, balanced in terms of moles, contains the same number of atoms of each element, before and after the reaction. This means that all the atoms and its masses are conserved. Why are moles not conserved during a chemical reaction? But the moles of EACH ATOM […]

What is SI unit of Joule? The SI unit for energy is the joule (J): 1 J=1 newton metre (N m). Another unit is the calorie (cal), which is defined as the heat required to raise the temperature of 1 g of pure water by 1°C at 1 atm pressure. What is the meaning of […]

Can you strengthen your diaphragm? Diaphragmatic breathing is a type of a breathing exercise that helps strengthen your diaphragm, an important muscle that helps you breathe. This breathing exercise is also sometimes called belly breathing or abdominal breathing. It has a number of benefits that affect your entire body. What can be done for a […]

Who decides if a case is heard by the Supreme Court? The U.S. Supreme Court decides to hear a case based on at least four of the nine Justices of the Supreme Court agreeing to grant the Petition for Certiorari. If four Justices agree to grant the petition, the Supreme Court will consider the case. […]

What is a good RMSE? For a datum which ranges from 0 to 1000, an RMSE of 0.7 is small, but if the range goes from 0 to 1, it is not that small anymore. However, although the smaller the RMSE, the better, you can make theoretical claims on levels of the RMSE by knowing […]

What can a reader determine from details in the sentences? What’s going on, where the characters are, whats going to happen, what’s happening. These are a few that the reader might determine from the details in just a sentence. How does using a quotation adds credibility to a writer’s ideas? How does using a quotation […]

What type of rock is most often associated with karst topography? Karst is associated with soluble rock types such as limestone, marble, and gypsum. In general, a typical karst landscape forms when much of the water falling on the surface interacts with and enters the subsurface through cracks, fractures, and holes that have been dissolved […]

Why is small gap left between railroad tracks instead of welding them together? The gap is left between the rails to provide a space for the iron metal to expand and contract during the summer and winter season due to the change in the temperatures. If the gap is not left in between then the […]