Aphysical science test book has a mass of 2.2kg. what is the weight on the earth

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

The energy released by a nuclear fusion reaction is produced when

What property of an object determines its inertia?