Question

Physics
Sound
Find velocity of a wave whose frequency is 120Hz and wavelength is 60m

Is this app is also in hindi 

The present age of ramu's father is four times of RAMU'S age . after10 years sum of their ages would be 70 years . findtheir present ages?

Please explain 

Why we should take only 16*2for 32 shall we take 4*8also

Solve x2-3x-10=0 by formula method

How to do

Biology 
Sound
How sound produced in animals 
And tq for giving this app and apporjunite to ask question sir 
THANK YOU SIR

Biology 
Sound 
How sound produced in animals

If x and y are not given then

1)A container has 5L 750ml of water, how many bottles each 50 ml capacity can be filled by this.
2)A student multipled 52 by 10101 instead of multiplying by 20202, by how much the answer will be the lesser than the correct answer.                                                          3)A cost of 840 boxes is ₹1680, find the cost of 90 pens if each box contain 40 pens.

If the vectors 2i 3j-6k and 4i-mj-12k are parallel find m

A shop gives 20%discount .what would the sale price of each of these be
@ A dress marked at ₹120
b. A pair of shoes marked at ₹ 750
C. A bag marked at ₹250

How to do graph?

Where is graph?

You can help for any chemistry app. 

I like this app because I learn everything than you teachoo

The fabric made from this fiber does not crumble easily, it stay tight and easy to wash so it's useful in making wearable fabrics 

51,102

Find the sum of the first 15 multiples of 4