Does the coefficient of kinetic friction depend on the weight of the block

The de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ. recall that wave number is defined by k=2π/λ. using the fact that λ=v/f, find the wave numbers k1 and k2 corresponding to frequencies f1 and f2. express your answer as two expressions

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems