Moving particles of matter shows wave like proper ties under suitable conditions. Who put forward this hypothesis ?

Moving particles of matter should display wave like properties under suitable conditions. Calculate the frequency associated with a pho ton of energy 3.3 * 10^-20 J . [h = 6.6 * 10^-34 Js]

"Louis De Broglie suggested existence of matter waves based on a hypothesis" The objects in our daily life do no exhibit wave like properties. Why?

All moving matters posses both wave and particle nature. Name and write the expression which can explain the above statement.