Science Questions and Answers

Science

Every trophic level in a food web is important because each level depends on the level below it for food energy. The producers or autotrophs, which include green plants and algae, capture solar...

Latest answer posted May 19, 2016 11:39 am UTC

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Science

Low mass stars and high mass stars share similarities and differences. One of the similarities is they both start the same way, with a huge collection of gases, primarily hydrogen and helium....

Latest answer posted January 3, 2016 11:12 pm UTC

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Science

Pressure and temperature are related to each other by Gay-Lussac's Law. This law says that P1T1=P2T2, or the initial pressure multiplied by the initial temperature is equal to the product of the...

Latest answer posted May 4, 2010 3:08 am UTC

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Science

RAM or Random-Access Memory is a type of computer data storage and stores the files that are in use while the computer is running. These files may include various programs such as operating system,...

Latest answer posted March 7, 2016 2:50 pm UTC

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Science

The simple answer to your question, "What will happen..." is nothing will happen. The danger of the "air bubble" is not in intramuscular injections, the danger occurs if the injection is...

Latest answer posted July 2, 2009 9:49 am UTC

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Science

Thermal energy is used to cook food. Thermal energy is heat. It's converted from either electrical potential energy or chemical potential energy, depending on the cooking appliance. An electric...

Latest answer posted November 13, 2015 7:17 pm UTC

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Science

The purpose of the battery in a series circuit is to give the circuit a source of energy. The purpose of a switch in a series circuit is to make it easy to open or close the electrical circuit,...

Latest answer posted April 27, 2010 11:55 pm UTC

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Science

If a baby's mother has an O positive blood type and a man has B positive blood type, it is possible for that man to be the baby's father if the child has O type blood or B type blood (either...

Latest answer posted May 12, 2016 3:41 pm UTC

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Science

It's important to distinguish between temperature and climate (there seems to be some confusion in the wording of the question). There are six kinds of climate but the main factors that affect (or...

Latest answer posted November 28, 2015 2:03 pm UTC

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Science

The given reaction is `CuO(s) + H_2(g) -> Cu(s) + H2O(l)` In this reaction, copper (II) oxide reacts with hydrogen to generate copper metal and water. This is an oxidation-reduction reaction, in...

Latest answer posted May 11, 2016 1:19 am UTC

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Science

A physical change could be done in a variety of ways, but one simple and common physical change is melting and freezing. When a substance is a solid, the arrangement of its atoms and molecules is...

Latest answer posted March 1, 2018 10:08 pm UTC

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Science

It depends on the source of the hemorrhage. Exsanguination is the term for bleeding to death. If the bleeding is from an arterial source, death may only take 20 seconds to a couple of minutes. Keep...

Latest answer posted June 15, 2010 5:08 pm UTC

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Science

Electroplating is the process of plating one metal over another. It is done for various purposes, most commonly for imparting corrosion resistance and decorative appearance. There are a number of...

Latest answer posted February 21, 2016 2:30 pm UTC

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Science

1. Nucleotide - building blocks of DNA. 2. Codon - a set of three nucleotides that codes for a particular amino acid via a tRNA's anticodon during protein synthesis 3. Polypeptide - a string of...

Latest answer posted November 12, 2015 8:51 pm UTC

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Science

An external force may cause a change in the state of motion, size and shape of an object. The force may cause a change in the internal arrangement of molecules making up the object and depending...

Latest answer posted January 10, 2016 3:01 pm UTC

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Science

Scorpion's are classified as arachnids, they share this category with spiders and mites. They have eight legs and are considered nocturnal (most waking activity is at night) arthropods. Scorpion's...

Latest answer posted July 26, 2010 5:11 pm UTC

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Science

The idea that spiders lay eggs in or under human skin is a surprisingly common myth, but it's just that, a myth. All spiders are free-living hunters, not parasites. Spiders cannot lay eggs or live...

Latest answer posted August 27, 2011 10:29 pm UTC

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Science

Specific heat capacity is the amount of heat required to raise the temperature of a substance by 1 K. It is expressed in the units J/ (kg*K). A high specific heat of a substance means that a large...

Latest answer posted February 19, 2011 3:28 pm UTC

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Science

Fossils are remains or impressions of once-living organisms. A study of these fossils provides us an insight into the lives of these organisms - how they grew, what their diet looked like, their...

Latest answer posted February 2, 2016 12:26 am UTC

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Science

While the functions and applications of a computer are almost endless, we can sense four primary purposes that are all linked to data (information): Entering data, manipulating data, viewing...

Latest answer posted July 6, 2009 9:23 pm UTC

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Science

The three isomers are shown in the attached diagram. The structure on the left has no net dipole moment and the structures in the center and on the right do. Here's why: The structure on the left...

Latest answer posted October 27, 2015 2:09 am UTC

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Science

TAC/TTC/AAA/CCG/CGT/GGG/ATT mRNA code can be derived as follows. In RNA instead of Thymine (T) you have Uracil (U) mRNA string will have the complementary base pair to the DNA string Complementary...

Latest answer posted May 23, 2012 7:39 pm UTC

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Science

In ecology, there are different levels of organization regarding the biotic, or living factors, in the ecosystem. An individual is a single organism, a population is a group of organisms of the...

Latest answer posted October 31, 2015 12:24 am UTC

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Science

I assume you are referring to the drug accidentally ingested by the main protagonist (Scarlett Johansson) in Luc Besson's movie Lucy. The drug was shown to increase her brain usage to 100%. CPH4 is...

Latest answer posted January 24, 2016 9:41 am UTC

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Science

The most common definition of symbiosis is a mutually beneficial relationship between two different species closely interacting with each other. These interactions tend to be long term with the...

Latest answer posted May 4, 2016 10:04 am UTC

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Science

The letters A, T, C and G represent the nucleotides or nitrogenous bases that make up a strand of DNA: A = adenine T = thymine C = cytosine G = guanine Adenine and guanine are a class of molecules...

Latest answer posted December 9, 2015 10:16 pm UTC

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Science

A closed system does not exchange mass with its surroundings and is only capable of exchanging energy with the surroundings. In comparison, an open system is capable of exchanging both mass and...

Latest answer posted January 16, 2016 2:19 pm UTC

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Science

You are asking for the general chemical formulas for lactic acid fermentation, alcoholic fermentation, and anaerobic respiration. Lactic acid fermentation is the conversion of sugars to lactic...

Latest answer posted December 10, 2012 6:07 am UTC

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Science

Calorimetry is the study of heat transfer during physical and chemical processes (e.g. dissolution of salt, or reaction of hydrogen and oxygen). In these kinds of experiments, the heat of chemical...

Latest answer posted September 3, 2013 10:50 am UTC

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Science

Precipitation, in the simplest terms, is the process by which water, contained in the clouds, falls down under the influence of gravity. There are several forms of precipitation, including rain,...

Latest answer posted March 28, 2016 12:39 pm UTC

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Science

1) Magnesium and chlorine form an ionic bond. Covalent bonds are formed when two or more atoms share electrons between them. Ionic bonds are when atoms gain or lose electrons to become charged...

Latest answer posted March 30, 2014 12:18 am UTC

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Science

Atoms consist of electrons, protons and neutrons. While the protons and neutrons are present inside the nucleus, the electrons orbit around it. Among these particles, protons are positively...

Latest answer posted May 15, 2016 6:20 pm UTC

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Science

There are many different types of data presentation. Four of those types include tables, bar graphs, line graphs and pie charts. A table lists data in columns. Tables can be useful if trying...

Latest answer posted July 5, 2013 8:34 pm UTC

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Science

Take note that the nucleus of an atom is composed of protons and neutrons. And the number of particles present in the nucleus is referred as mass number (Also, called as atomic mass). mass number =...

Latest answer posted October 22, 2014 12:00 am UTC

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Science

The frequency (f) is determined by the speed of light (c) divided by the wavelength of the light (l), or f = c / l, where f is in cycles per second or Hertz (Hz), c is in meters per second, and l...

Latest answer posted February 13, 2012 10:26 am UTC

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Science

First we need to know which species got oxidized and reduced. Reduction: `MnO_4^(-) -> Mn^(2+)` `MnO_4^(-) -> Mn^(2+) + 4H_2O` `8 H^(+) + MnO_4^(-) -> Mn^(2+) + 4H_2O` `5 e^(-) + 8 H^(+) +...

Latest answer posted April 25, 2013 4:06 pm UTC

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Science

Thunder is the result of lighting. Lighting is a result of electrical charges. Lighting is attracted to the tallest tip of a conductor. Trees are often the tallest objects within an environment....

Latest answer posted February 10, 2016 1:21 pm UTC

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Science

Sexual reproduction, something that is more familiar to humans as it is how humans replicate, requires two parents (or gene sources) contributing genetic information to an offspring that will be...

Latest answer posted May 12, 2016 2:15 pm UTC

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Science

The smallest item in the list would be organelles. Organelles are tiny structures within a cell, that help it to function. Example of organelles are-- nucleus, mitochondria, cell membrane to name a...

Latest answer posted September 9, 2010 3:07 am UTC

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Science

Actually, you're right. The difference arises depending on what's given in the problem. It is true that Enthalpy of reaction (general) is calculated as enthalpy of products minus enthalpy of...

Latest answer posted May 12, 2013 3:28 pm UTC

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Science

Average velocity is equal to the instantaneous velocity when acceleration is zero. In order for acceleration of an object to equal zero, there can be no change in speed or direction. For example,...

Latest answer posted July 27, 2011 10:46 pm UTC

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Science

This is an example of a combustion reaction. To answer this you must first balance the equation. The easiest way is to set up the reaction equation without any coefficients: C2H6O + O2 --> CO2...

Latest answer posted September 6, 2010 5:02 am UTC

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Science

The number of bones a person has in their body generally depends on their age. A human newborn baby has approximately 270 bones in his or her body. As the person ages and develops, some of the...

Latest answer posted November 6, 2013 12:02 am UTC

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Science

A toaster converts electrical energy to heat (or thermal) energy. A toaster is an electrical device used for making toasts. The process involves putting pieces of bread in the slots of a toaster...

Latest answer posted November 19, 2015 6:58 pm UTC

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Science

Sodium Chloride or NaCl is made up of two elements, sodium (or Na) and chlorine (or Cl). A molecule of sodium chloride, NaCl, consists of one atom each of sodium and chlorine. Hence, each molecule...

Latest answer posted September 24, 2015 12:35 am UTC

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Science

A torque of 12 N*m is applied to a solid, uniform disk of radius 0.50 m. As a result of this, the disk accelerates at 5.7 rad/s^2. If a torque T is applied to an object with moment of inertia I,...

Latest answer posted November 12, 2013 7:46 pm UTC

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Science

Electrons can move by the action of the electric force, or the magnetic force. In the case of the electric field, it is established, by covenio, that regions around the positive charges are...

Latest answer posted May 7, 2015 8:38 pm UTC

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Science

Research is simply a detailed and focused study, using scientific methods, to understand why something happens and/or what are its applications. Research is basically done for two purposes: to...

Latest answer posted October 6, 2015 12:35 pm UTC

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Science

There are three basic rules during severe weather: get in, get down, and cover up! Having a safety plan before a disaster strikes will allow individuals to act promptly and lessen the likelihood of...

Latest answer posted March 18, 2016 12:45 pm UTC

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Science

Sugar, like all other substances, has a limit to its solubility in water. That is why we cannot dissolve more than a particular quantity of sugar in a given volume of water. Any sugar added after...

Latest answer posted April 4, 2016 12:27 am UTC

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