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  • Waiting for answer What is the Bernoulli's principle?

    According to Wikipedia: In fluid dynamics, Bernoulli's principle states that for an inviscid flow, an increase in the speed of the fluid occurs simultaneously with a decrease in or a decrease in the fluid's potential .[1][2] The principle is named after Daniel Bernoulli who published it in his boo...

  • Waiting for answer What is covalent bonding?

    Covalent bonds are typically between two non-metals. Examples of covalent bonds are Water- H2O, Methane- CH4, Carbon Dioxide- CO2, Sulfur Hexafluoride- SF6, Nitrogen Dioxide- NO2, Sugar- C12H22O11, Ethanol- C2H5OH In covalent bonding electrons are shared by the two elements. There are single, dou...

  • Waiting for answer CaH2+H2O->Ca(OH)2+H2 unbalanced If 21 g of CaH2 is consum...

    B. 37 g of ##"Ca(OH)"_2## are produced; C. 23 L of ##"H"_2## gas are formed at STP. A. Balanced equation The balanced equation is ##"CaH"_2("s") + "2H"_2"O"("l") rarr "Ca(OH)"_...

  • Waiting for answer The functions f and g are defined for all x€R \{ -1,0,1} by...

    General approach is to transform both sides of the equality until they start appearing similar. Consider the right hand side, we have: ##(f@g)(x) = f(g(x)) = (1/x +1)/(1-1/x) =...

  • Waiting for answer 1.What is x if the mean of the numbers 4,5,x,8,9 and 3 is 6?...

    1) ##x = 7##. 2) Median = ##7.5## Explanation: Recall that the arithmetic mean ##bar x## of a data set may be determined as follows: ##bar x = sum_(i=1)^n x_i/n##. where n = number of numbers you adding up and ##x##= the number Thus, for our initial data set: ##6 = (...

  • Waiting for answer How do you prove ## [(1)/(1-sinx)]+[(1)/(1+sinx)]=2sec^2x##?...

    The formula can be proven by applying: 1) Least common multiple; 2) applying the trigonometric entity ##sin^2x + cos^2x=1 ## Head Key-relation : ##sin^2x + cos^2x=1## Key-conce...

  • Waiting for answer What was the purpose of William B. Travis' letter from the A...

    To ask for aid and to state the determination of the defenders to fight to the death. Travis knew he was in a bad state. His small army of 150 or so were surrounded by three to four...

  • Waiting for answer What is a meniscus? How is it used for marking volumetric me...

    There are two tipes of meniscus (see the picture). When you put water (for example) in a beaker or test tube, you see a curved surface. With most liquids, the attractive force between the liquid and the container is greater than the attraction between the individual liquid molecules. So we can c...

  • Waiting for answer What is the square root of 25/49?

    ##sqrt(25/49)=(sqrt 25)/(sqrt49)=5/7##

  • Waiting for answer What is a chloroplast?

    It iS the cytoplasmic organelle . Double membranous green pigment containing plastids called chloroplasts .They mostly contain organic compound called chlorophyll which helps in .

  • Waiting for answer What is Ion chemistry?

    An ion in chemistry is when an atom loses or gains an electron. This causes the neutral atom to have a positive or negation charge. If an ion has a positive charge, it is a cation. When it has a negative charge, it is an anion.

  • Waiting for answer What is compact bone tissue composed of?

    Articular cartilage and bone marrow. Compact bone is found on the outer surface of long bones. The cells (osteocytes) which make up bone are very densely packed. The ends of long b...

  • Waiting for answer What are some examples of enzymes in the human body?

    First we have to define enzymes. Enzymes are protein catalysts with specificity for both reaction catalyzed and its substrates. They can speed up cellular reactions and lower the energy of activation (which is necessary to start a reaction)....

  • Waiting for answer What is a radioisotope?

    Unstable atoms with the same number of protons in the nucleus. Radioisotopes are radioactive : Radioactive means that the nucleus of an atom has an unfavorable combination of neutr...

  • Waiting for answer What are some examples of transgenic organisms?

    Here's what I've got. A transgenic organism is one that contains genes from other organisms. These genes usually add some special ability or function to the organism. Soybeans hav...

  • Waiting for answer How do you write an equation in slope-intercept form for the...

    ##3x-5y+12=0## The two lines are perpendicular to each other, if the product of their slopes is ##-1##. Hence if of one line is given as ##a/b##, slope of line perpendicular to it i...

  • Waiting for answer What is the electron configuration for a chloride ion?

    ##1"s"^2 2"s"^2 2"p"^6 3"s"^2 3"p"^6## OR ##"[Ne]" 3"s"^2 3"p"^6## The of a chlorine atom (##"Cl"##) is as follows: ##1"s"^2 2"s"^2 2"p"^6 3"s"^2 3"p"^5## But a chlorine ion (#...

  • Waiting for answer The Jacksonian Period (1824-1848) has been celebrated as the...

    Jackson essentially ushered this period in on his own. Jackson was "for the common man," but not necessarily a common man himself. Jackson was a wealthy farmer that owned many slaves...

  • Waiting for answer For an acid-base reaction, what is the reacting species in t...

    ##HI## undergoes almost complete ionization in water. How do you determine this? By experiment. Except for ##HF##, ALL of the hydrogen halides in water are strongly acidic: ##HI...

  • Waiting for answer How to find average acceleration? a bird is flying south at...

    ##abs(vec a) = 5 m/s^2 ## ## theta = arctan (4/3)## by definition average acceleration over time ##t## is: ##vec a = (Delta vec v)/(t) = 1/t (vec v_2 - vec v_1)## using W-E as po...

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