minute math facts

After covering a distance of 30 km with a unform speed there is some defect in a train engine and therefore, its speed is reduced to 4/5 of its original speed. Consequently, the train reaches its destination late by 45 minutes. Had it happened after covering 18 kilometres more, the train would have reached 9 minutes earlier t..

formulae and facts

Definition of Differential Coefficient: If $f(x)$ is any function of $x,$ then. ${\displaystyle \frac{d}{dx}f(x)=lim_{h\rightarrow o}\frac{f(x+h)-f(x)}{h}}$ Standard Formulae (i) $({\displaystyle \mathrm{a})\frac{d}{dx}x^{n}=nx^{n-1}}$ (b) $\frac{d}{dx}(u^{n})=nu^{n-1}\cdot\frac{du}{dx}$ (ii) $({\displaystyle \mathrm{a})\frac..

Division Facts

Introduction In mathematics, especially in elementary arithmetic, division is the arithmetic operation one among 4 arithmetic operations and it is the inverse of multiplication. a divided by b equals c, written: a/b=c Its dented by () or / Where: a is called the dividend, b the divisor c the quotien..

Facts of time

A universal time scale has been developed called UTC (Coordinated Universal Time) which is based on the time told by atomic clocks but compensates for the minute slowing of the Earth's rotation (caused by the gravity of the Moon) by adding Leap Seconds every year to prevent day from creeping into night (albeit in a millennia or two). ..

useful random facts

If an experiment, when repeated under identical conditions, do not produce the same outcome every time but the outcome in a trial is one of the several possible outcomes then such an experiment is known as a probabilistic experiment or a random experiment. In other words, an experiment whose outcomes cannot be predicted or determined in ..

important formuale and facts

DIFFERENTIAL CALCULUS Functions and Graphs (1) Domain and Range of the Function : If $y=f(x)$ is any function, then Domain: Set of all those real values of $x$ for which the function is defined. Range: Set of all values of $y$ related to domain. (2) Even Function: Function $f(x)$ is even function if f $(-x)=f(x)$. (3) Odd F..

Intresting facts of calender

Length of the (tropical) year in 2000 A.D.:365 days, 5 hours, 48 minutes, 45 seconds Time that the year has slowed since 1 A.D.:1O seconds Average decrease in the year due to a gradual slowing of the earth's rotation:1/2 second per century Lunar Month: 29 days, 12 hours, 44 minutes, 2.9 seconds The earliest known ..

SOME CURIOUS FACTS ABOUT HUMAN BEINGS

1. Largest endocrine gland: Thyroid gland 2. Number of Chromosomes : 46(23 pairs) 3. Largest artery: Abdominal aorta 4. Largest vein: Inferior vena cava 5. Normal pulse rate (in adult): Male 67-72/ minute 6. Skull: Dicondylic (29 Bones) 7. Ribs: 12pairs 8. Vertebrae: Acoelous (33) 9. ..

force and motion facts

Locomotion. Euglena has two modes of locomotion : - swimming or flagellar and creeping or euglenoid. (a) Swimming (Fig. 3'4). Swimming is fairly rapid, about 3'6 mm. per minute. It is brought about by the flagellum. For -swimming, the flagellum trails obliquely backwards, and works on the principle of an ..

hydrogen element facts

. These neutrons have nearly the same mass as protons and hence can easily knock them out from hydrogenous compounds. The extremely high penetrating power is explained by the fact that they are uncharged and hence experience no repulsion from positive nuclei of lead sheets. Chadwick confirmed his hypothesis by the following experiment. a..

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