Aproduct is scarce when what happens

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

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.