Category: Physics

Does neutron have mass? neutron: A subatomic particle forming part of the nucleus of an atom. It has no charge. It is equal in mass to a proton or it weighs 1 amu. Is there a neutron bomb? A neutron bomb is actually a small thermonuclear bomb in which a few kilograms of plutonium or […]

Does number of devices affect WiFi? Theoretically, multiple devices connected to Wi-Fi doesn’t slow down the internet speed. But in practice, more the number of devices are connected to the internet, the bandwidth is being shared thus affecting the speed. On the other hand, streaming live videos and downloading large files consumes a sizeable bandwidth. […]

How can you prevent Backdraft? Most of the time, this is accomplished by cutting an opening in the roof and refraining from opening any windows or doors on or below the fire floor until conditions have changed. This means that no search and rescue can occur and no water is being put on the fire […]

How do you calculate total population size? This method of estimation is called the Lincoln Index. P = (N1 x N2)/ R. P = total size of population. N1 = size of first sample (all marked) N2 = size of second sample (recapture: some will be marked, some won’t) R = number of marked individuals […]

How do you know if a series connection is parallel? If all of the current leaving one resistor enters another resistor, the two resistors are in series. If all of the voltage across one resistor is across another resistor, the two resistors are in parallel. Two resistors on the same path are in series. There […]

Which best describes the difference between thermal energy and heat? They are different words for the same thing. They represent different concepts. Heat is what happens when thermal energy stops moving between substances. Thermal energy is what happens when heat moves between substances. Which is the best description of thermal energy? Which best describes thermal […]

What are three useful applications of halogens? Halogens are used in the chemical, water and sanitation, plastics, pharmaceutical, pulp and paper, textile, military and oil industries. Bromine, chlorine, fluorine and iodine are chemical intermediates, bleaching agents and disinfectants. What are 3 characteristics of halogens? What are the similar properties of halogens? They all form acids […]

What are the major differences between static and dynamic stretching? Dynamic stretching is a strategy used to improve mobility while moving through a range-of- motion, often in a manner that looks like the activity or sport that is going to be performed. Static stretching is holding a stretch without movement, usually only at the end-range […]

What is the square root of 12 between? We see that √12 would be in between √9 and √16 (3 and 4), so the square root of 12 is in between 3 and 4. What are the two consecutive integers? As discussed in the introduction, in Maths, the numbers that follow each other in an […]

Why do the ships fly backwards in the expanse? Whenever a ship is traveling to a certain destination, it has to cut thrust and flip around halfway through the trip. The back half of the journey is then spent with the main drive pointing toward the destination in order to decelerate. How fast is the […]