A light spring of constant 179 N/m rests vertically on the bottom of a large beaker of water. A 4.01 kg block of wood of density 600 kg/m3 is connected to the top of the spring and the block-spring system is allowed to come to static equilibrium. What is the elongation ΔL of the spring?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?

Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp,max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?

Why do metals "give up" their valence electrons?