The negative sign represents Lenz’s Law, which tells which way the induced current flows, based on the horse-sense observation that the magnetic field generated by an induced current must oppose the change in the flux that caused it. Why is emf sometimes positive and sometimes negative? Say there is aRead More →
Answer: As, mass is a scalar quantity. so it is always a positive quantity. Can mass be positive or negative? Antimatter does not have negative mass. In our universe, there is no such thing as negative mass. Mass only comes in positive form. Why can’t negative mass exist? Negative massRead More →
Where does c’est la vie come from? C’est la vie literally means “this is the life” in French, taken as “that’s life.” Found in French well before, the expression was borrowed into English by the 1880s. What does Saylavee mean? : that’s life : that’s how things happen. Is CeRead More →
A negative return refers to a loss, either on an investment, a business’s performance, or on invested projects. When an investor purchases securities with the goal of those securities appreciating but rather they decrease in value, the investor has a negative return. What is a bad ROI percentage? According toRead More →
The sine ratio is y/r, and the hypotenuse r is always positive. So the sine will be negative when y is negative, which happens in the third and fourth quadrants. Why is sin positive in second quadrant? Where’s sine positive? Since sine is the second coordinate on point P, it’sRead More →
Valency is the combining capacity of an element. The total number of electrons in the outermost shell varies from 1 to 8 there for the combining capacity will always be 1,2,3,4,5,6,7 or 8. Therefore valency is always positive. What does the positive and negative number of valency indicate? the wordRead More →
Stains, or dyes, contain salts made up of a positive ion and a negative ion. Depending on the type of dye, the positive or the negative ion may be the chromophore (the colored ion); the other, uncolored ion is called the counterion. What type of stain is the Endospore stain?Read More →
Valency is the combining capacity of an element. The total number of electrons in the outermost shell varies from 1 to 8 there for the combining capacity will always be 1,2,3,4,5,6,7 or 8. Therefore valency is always positive. What does the positive and negative number of valency indicate? the wordRead More →
The purpose of the uninoculated tube is to use as a comparison to the tubes that were inoculated– makes it easier to see if acid was produced. The base broth has no sugar, so it acts as a negative control. What is the purpose of the Uninoculated sample? What isRead More →
Stains, or dyes, contain salts made up of a positive ion and a negative ion. Depending on the type of dye, the positive or the negative ion may be the chromophore (the colored ion); the other, uncolored ion is called the counterion. What type of stain is the Endospore stain?Read More →