# Posts by Bablu

Total # Posts: 5

**Math**

the sum of the digits of a 2 -digits number is 9.The new number obtained by interchanging the digits exceeds the given number by 27. find the given number

**Physical Science**

When liquid flow throw a narrow tue, there an oppositional force applied between two layer of liquid . The 1st layer try to pull back . This property of liquid is said to be viscocity .

**physics**

Let A and B be the two vectors of magnitude 10 unit . If they are inclined to X-axis at angle 30 degree and 60 degree respectively. Find the resultant.

**Physical Science**

F= mg =120*9.8 =1176 now work done W= F*D =1176*5 =5880 J hence correct option is (b)

**mathamatics**

square root of 225