The reason why weight of ashes resulting from the burning of wood is not equal to the weight of wood piece before it burns is explained below
<u>Explanation:</u>
The reason why the weight of ashes resulting from the burning of wood is not equal to the wood piece before it burns is that when wood burns it loses its mass and that's how ashes are created.
Wood contains carbon and hydrogen when these two combines with oxygen at high temperatures Carbon dioxide and water vapor are obtained as by product.when this mixture leaves the wood in the form of smoke only burnt ashes are leftover.
This is the main reason for inequality in the weight of wood and ash after burning.
If the observer is stationary but the source moves toward the observer at a speed vs, the observer still intercepts more waves per second and the frequency goes up. This time it is the wavelength of the wave received by the observer that is effectively shifted by the motion, rather than the speed.
