Category: Physics

What is the disadvantage of refracting telescopes? Disadvantages. All refractors suffer from an effect called chromatic aberration (“color deviation or distortion”) that produces a rainbow of colors around the image. This is why the early refracting telescopes were made very long. What is the best size telescope for viewing planets? The larger the diameter, the […]

How are rock paintings dated? The most common example of this form of absolute chronology, which we can use with rock paintings, is radiocarbon dating. If we can use that technique it can give a reasonably accurate age up to approximately 50,000 BCE (Before Common Era similar to BC, Before Christ). Can rock art be […]

Are all insulators dielectric? In dielectric materials, the electrons are bound to the nucleus and have limited movement. Thus a dielectric can be defined as an insulator that can be polarized. Thus all dielectrics are insulators, but all insulators are not dielectrics. A dielectric can thus store charge. What does dielectric mean? Dielectric, insulating material […]

What is the 3 laws of motion? In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other […]

Are gold bars a good investment? Although the price of gold can be volatile in the short term, it has always maintained its value over the long term. Through the years, it has served as a hedge against inflation and the erosion of major currencies, and thus is an investment well worth considering. What is […]

Does anyone have sentence? anybody is always treated as a singular, and that’s the word you have to make agreement with. It’s got nothing to do with converter and converters because those aren’t the subjects of the sentence. does always goes with anybody. And if you are using does, you can’t use has with it. […]

Does plant take in oxygen at night? Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration. How do plants know night? A plant’s “eyes,” or light-sensitive proteins, signal whether it is day […]

What is the function of the sodium potassium pump in nerve cells? It acts to transport sodium and potassium ions across the cell membrane in a ratio of 3 sodium ions out for every 2 potassium ions brought in. In the process, the pump helps to stabilize membrane potential, and thus is essential in creating […]

Which is the most preferred use of roller bearing? Rolling-element bearings are often used for axles due to their low rolling friction. For light loads, such as bicycles, ball bearings are often used. For heavy loads and where the loads can greatly change during cornering, such as cars and trucks, tapered rolling bearings are used. […]

Is there a place with no natural disasters? Bahrain. Bahrain is often ranked as one of the safest places due to the low frequency of natural disasters and government security. It is a small monarchy in the Persian Gulf. Other than dust storms and hot summer, there is not much danger from extreme natural disasters. […]