study about determinant

X-Ray Study of Crystals - In a crystalline solid, the constituent particles (atoms, ions or molecules) are arranged in a regular order. An interaction of a particular crystalline solid with X-rays helps in investigating its actual structure. Crystals are found to act as diffraction gratin..

A biotechnologist wishes to determine the germination time for a particular variety of tomato plant she has developed. She wishes to be 95% confident that the estimate is within 3% of the true proportion. A recent study of 130 seeds showed that the germination time for 80% of th..

Most proper nouns do not take determiners at all. Thus names of cities, people, educational institutions and languages do not take determiners. I visited Bombay. Cairo is a beautiful city. Have you met Mina. I study at Carmel's. Some proper nouns that indicat..

A teacher wishes to know whether there is any relationship between the hours of study and the test scores of the students. Ten students were selected randomly and were given a test. Test the hypothesis that there is a significant relationship between hours of study and test scor..

An educational researcher wants to find the relationship between studying hours ( x 1 ), playing hours ( x 2 ) and test scores ( y ) of the students of grade 5. Determine (i) the multiple correlation coefficient, (ii) the coefficient of multiple determination and (iii)..

We have studied that a triangle has six parts or six elements viz three sides and three angles. From geometry, we know that when any three elements are given of which necessarily a side is given, the triangle is completely determined i.e, remaining three elements can be det..

In heterogenous reactions where one of the phase is a solid, the surface area of the solid affects the rate of a reaction. An increase in surface area leads to an increase in the rate of a reaction. For e.g., lycopodium powder is easily ignited to produce a yellow flame since a powder has a large s..

Photocells are used in television camera to reproduce sound recorded on films, in counting devices, in burglar and fire alarms, to measure the temperature of stars, to study the spectrum of heavy bodies, to operate street light, to compare the illuminating powers of two sources, in photom..

Applications of Photoelectric Cells - Photocells are used in television camera to reproduce sound recorded on films, in counting devices, in burglar and fire alarms, to measure the temperature of stars, to study the spectrum of heavy bodies, to operate street light, to compare the illumin..

[a]pyrene is a known precursor to cancer causing metabolites in laboratory animals. Various studies have determined that this compound is toxic. It is converted by cytochrome P450 to a variety of oxides that react with DNA, making them highly mutagenic. The newborn animals of pr..