That type of bending is called "diffraction" of waves.
Answer:
i dont really understand but when you accelerate you move faster. So i guess the skateboarder is moving fast forward
Answer:
B. Color perception is achieved by activation of various combinations between the tree cone types.
Explanation:
Human eye have only three photo receptor ( three wavelength) but they can see several thousands of shades of color because color perception is gained by combination of these three wave length cone types ( RED, BLUE AND GREEN) into various combinations. Our retina have two types of cell:- cone cells and cylindrical cells. Cone cells are responsible for the identification of color.
Answer:
carbon has four unpaired electrons in its valence shell . hydrogen having one unpaired electron in its valence shell comes to bond with carbon by sharing a pair of electrons .since carbon needs 4 electrons to be stable, 4 hydrogen atoms take part in the bond . It's a covalent bond because the difference between the electronegativity of carbon and hydrogen is quite small .
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.
Mathematically can be expressed as,

The upper frequency is 88Hz and the lower frequency is 6, therefore the Bandwidth would be,


The center frequency is given on the basis of the square root of the multiplication of the two reference frequencies, then,


