Which kind of investigations allow for the control of variables? Answer Expert Verified An experimental investigation allows you to control the variables. Explanation: Experimental investigations include a method in which a “fair test” is created and variables are actively planned, managed, and measured in an attempt to gather testimony to confirm or negate a causal […]
Which country is coal rich and oil poor?
Which country is coal rich and oil poor? India: Rich in coal but poor in energy. What is chemical formula of oil? The chemical formula for crude oil is CnH2n+2, where n is a positive integer. Crude oil is basically a combination of several hydrocarbon molecules, comprising hydrogen, H and carbon atoms, C. Among the […]
Does a real diamond sparkle blue?
Does a real diamond sparkle blue? A fake diamond will have rainbow colors that you can see inside the diamond. “People have a misconception that diamonds sparkle like a rainbow, but they don’t,” Hirsch said. “They do sparkle, but it’s more of a gray color. What color do real diamonds shine? The way that diamonds […]
When two particles with like charges are close enough to interact is the potential energy positive or negative?
When two particles with like charges are close enough to interact is the potential energy positive or negative? The graphs of potential energy between two charges for like and unlike charges are shown below. For like charges, the potential energy is always positive, that is because we need to put energy in the system to […]
How do you know if an image is real or virtual?
What are three non-sampling errors?
What are three non-sampling errors? Non-sampling errors include non-response errors, coverage errors, interview errors, and processing errors. A coverage error would occur, for example, if a person were counted twice in a survey, or their answers were duplicated on the survey. What are examples of non-sampling errors? Any error or inaccuracies caused by factors other […]
Where is lead storage battery used?
Where is lead storage battery used? Lead–acid batteries are used in emergency lighting and to power sump pumps in case of power failure. Traction (propulsion) batteries are used in golf carts and other battery electric vehicles. Which cathode is used in lead storage battery? lead dioxide Why lead is used in batteries? Lead-acid batteries, also […]
Is nitrogen-14 an isotope?
Is nitrogen-14 an isotope? Nitrogen-14 is one of two stable (non-radioactive) isotopes of the chemical element nitrogen, which makes about 99.636% of natural nitrogen. Nitrogen-14 is one of the very few stable nuclides with both an odd number of protons and of neutrons (seven each) and is the only one to make up a majority […]
What is the oldest ice core sample?
What is the oldest ice core sample? The deepest ice core records come from Antarctica and Greenland, where the very deepest ice cores extend to 3 kilometers (over two miles) in depth. The oldest continuous ice core records extend to 130,000 years in Greenland, and 800,000 years in Antarctica. What two events must occur for […]
Does masturbation affect immunity?
Does masturbation affect immunity? An orgasm may benefit your immune system Though the study was very small, the researchers found that masturbation increased the number of inflammatory mediators called leukocytes (white blood cells) and natural killer cells. Both of these fight infection as a part of the body’s immune response. How can you tell if […]