swagatikasamantaray432

The speed of light is 3.0×108 m/s and the speed of sound is 3.4×102 m/s. Find the value of the integer N in the following statement: If you start counting seconds when you see something happen and stop when you hear it happen, then the event is about 1km away for every N seconds counted.I'm really struggling to find a good starting point for this problem. Thanks.

differentiate:

y= t sin t / 1+t

lim x->0 sin 5x/3x

lim x->0 sin(x²)/ x