Category: Physics

Where do all elements heavier than iron come from? 3 Answers. Elements heavier than iron are produced mainly by neutron-capture inside stars, although there are other more minor contributors (cosmic ray spallation, radioactive decay). They are not only produced in stars that explode as supernovae. What are the five common elements in Stardust? In this […]

What is the safest part of the house in a tornado? If you’re in a house, the safest place to be is on the lowest floor, away from windows and with as many walls as possible between you and the outside, according to KXAS-TV (NBC5) chief meteorologist Rick Mitchell. If the house doesn’t have a […]

What does experiment mean? 1 : a procedure carried out under controlled conditions in order to discover an unknown effect or law, to test or establish a hypothesis, or to illustrate a known law. 2 : the process of testing : experimentation. experiment. How many variables make a good experiment? An experiment usually has three […]

What is sensible heat water? Sensible heat of water: It is defined as the quantity of heat absorbed by 1 kg ofwater when it is heated from 0°C (freezing point) to boiling point.It is also called total heat (orenthalpy) of water or liquid heat invariably. It is reckoned from 0°C where sensible heat is takenas […]

How do telescopes collect data from stars? Radio telescopes collect and focus radio waves from distant objects. Space telescopes orbit Earth, collecting wavelengths of light that are normally blocked by the atmosphere. Modern telescopes collect data that can be stored on a computer. Astronomers can learn a lot about a star by studying its spectrum. […]

What does a solid yellow line on the left side of the road mean? Solid Yellow Line on the Left Side of the Road The yellow line is there to let you know that a median or divider is in place to separate two lanes of traffic, your side of the road from the one […]

Why is my mask layer white? Click on the Add Layer Mask icon on the Layers panel. A second thumbnail filled with white will appear on the layer, and nothing will change on your photo or document. That’s because white on the layer mask reveals everything on that layer. So when we’re using layer masks, […]

How do spectrophotometers work? The basic function of a spectrometer is to take in light, break it into its spectral components, digitize the signal as a function of wavelength, and read it out and display it through a computer. In most spectrometers, the divergent light is then collimated by a concave mirror and directed onto […]

Can an electric eel kill a shark? Of course if the electric eel manages to give an electric shock, the bull shark won’t appreciate and will probably try to find an easier – and less electric – prey. But there is no way for an eel to beat, or kill, a bull shark. The eel […]

Is a zebra black or white? Zebras are generally thought to have white coats with black (sometimes brown) stripes. That’s because if you look at most zebras, the stripes end on their belly and toward the inside of the legs, and the rest is all white. Is a zebra a horse? Zebras are classified in […]