If*Va= 2i + 3j and Vb=3i+xj. If the velocity of A with respective B is normal to Va. Find the valuex.​

Answer:

the length of the phone is 20 cm and 30 cm of the string of each phone while talking.

Answer:

situated in a colony. Three boys Ankur, Syed and David are sitting at equal distance on its boundary each having a toy telephone in his hands to talk each other. Find the length of string of each phone

Solution:

Centre and Centroid are the same for an equilateral triangle, and it divides the median in the ratio 2 : 1.

A circular park of radius 20 m is situated in a colony. Three boys Ankur, Syed and David are sitting at equal distance on its boundary each having a toy telephone in his hands to talk to each other. Find the length of string of each phone

Let A, D, S denote the positions of Ankur, David, and Syed, respectively.

∆ADS is an equilateral triangle since all the 3 boys are equidistant from one another.

Let B denote the mid-point of DS, and hence AB is the median and perpendicular bisector of DS.

Hence ∆ABS is a right-angled triangle with ∠ABS = 90º.

O (centroid) divides the line AB in the ratio 2 : 1. So OA : OB = 2 : 1.

OA/OB = 2/1

Since OA = 20

thus, OB = 10m

AB = OA + OB = 20 + 10 = 30 m ….(1)

Let the side of the equilateral triangle ∆ADS be 2x.

AD = DS = SA = 2x …. (2)

Since B is the mid-point of DS, we get BS = BD = x …. (3)

Applying Pythagoras theorem to ∆ABD, we get:

AD2 = AB2 + BD2

(2x)2 = 302 + x2

4x2 = 900 + x2

3x2 = 900

x2 = 300

x = 10√3

x = 17.32

AD = DS = SA = 2x = 34.64 m

Length of the string = Distance between them = AD or DS or SA = 34.64 m.

Answer:

Febcylod is not an accurate word; especially not included in history. Therefore, the answer is about the Fireblade's history. But if you are thinking about something else then comment below.

Explanation:

The first FireBlade debuted in 1992 and was a true game changer. Tadao Baba and his tea developed the revolutionary concepts to beat Honda's RVF750 on track by being the lightest and most compact bike in its class.

Given ,

angle PEB =70 °

angle BEG =30°

angle EGF = 25°

to find ,

angle GDF ,angle GDF.

Dwindling agricultureThe excessive drilling of borewells has led to the depletion in the groundwater table. As a result of this, around 68 per cent of the country is affected by drought now, he said.

your taking out ground water and one day will come when entire ground water in that are will get exhausted for forever .and all the well will go dry .

this is real bad situation due to following reason

(1) This will create scarcity for drinking water .

(2) The moisture of soil will vanish

(3) The fertility of soil will also vanish

(4) Tree roots which take out moisture from soil wont able to do that and they will die untimely death

(5) And the worst of all that particular are will become desert one day .

thier is nothing bad in having borewell but you cant take out all the water make sure that ground water get accumulation also .

and remeber we are here for some time so use resourses wiselly we want to leave better world for your future generation ,hope we may not end up fucking our envikronment .

following things we can do to replish ground water

1- plant more trees

2-create small ponds

3 -use dreep technology in farming

4-create small check dams

5-create small ponds

6-save rain water

7-make water holding tanks