Are black sapphires valuable? Black sapphire is a variety of the mineral corundum. Most black sapphires come from Australia and are found in large quantities. Unfortunately, black sapphires are considered low grade, low quality gemstones and are not valuable. The flip side of this is that black sapphire jewelry is generally very affordable. What is […]
Are westerlies geostrophic winds?
Are westerlies geostrophic winds? Anything moving from tropics towards poles deflects towards their right in the northern hemisphere and towards their left in the southern hemisphere due to Coriolis effect. So jet streams flow from west to east in both the hemispheres and hence they are called westerlies or upper level westerlies. Why is geostrophic […]
Why is the mass of nucleus always less?
Why is the mass of nucleus always less? The actual mass is always less than the sum of the individual masses of the constituent protons and neutrons because energy is removed when when the nucleus is formed. This energy has mass, which is removed from the total mass of the original particles. Which particles Cannot […]
How can a substance exist in 2 states at once?
How can a substance exist in 2 states at once? Now, for the first time, scientists have discovered that it’s possible for matter to exist in two of these states at once. Specifically, the metal potassium can be a solid and a liquid simultaneously, if you treat it just so. Simply apply extreme pressure and […]
What information should be included in an anecdotal observation?
What information should be included in an anecdotal observation? Anecdotal: Describe exactly what you see and hear; do not summarize behaviour or what you are observing. Use words conveying exactly what a child said and did. Record what the child did when playing or solving a problem, their interests basically anything. What is a good […]
Are located in the center of the atom?
Are located in the center of the atom? The parts of an atom are protons, electrons, and neutrons. A proton is positively charged and is located in the center or nucleus of the atom. Electrons are negatively charged and are located in rings or orbits spinning around the nucleus. The number of protons and electrons […]
What does accuracy mean?
What does accuracy mean? freedom from mistake What does accuracy mean in typing? words accurately and correctly What is accurate value? Definition: Accuracy is the ability of the instrument to measure the accurate value. In other words, it is the closeness of the measured value to a standard or true value. The accuracy can be […]
Why is Arizona so cheap?
Why is Arizona so cheap? Skipping Ads. The reason for the 23-ounce can’s low cost, according to chief marketing officer and co-owner Spencer Vultaggio, can be found in the company’s advertising. Arizona Beverages helps keep costs down, and the cans big, by relying on word of mouth instead of pricey ad campaigns and celebrity endorsements. […]
Is it possible to add two vectors?
Is it possible to add two vectors? Answer: No, we cannot add two vectors representing physical quantities of different dimensions. However, we can multiply two vectors representing physical quantities with different dimensions. How do you algebraically add two vectors? To add or subtract two vectors, add or subtract the corresponding components. Let →u=⟨u1,u2⟩ and →v=⟨v1,v2⟩ […]
Which class has the highest frequency?
Which class has the highest frequency? Answer:Red has the lowest at 430 trillion hertz. It also carries the lowest energy. Violet has the highest frequency at 760 trillion hertz and carries the highest energy. What is the upper class limit in the class interval 200-225? Answer. (i) Class size = [Upper class limit] – [Lower […]