Amount of goods and services that consumers want to buy

Plss anybody know how to do this? ? i need the answers from a through d

What are segments of dna that code for a particular trait. a combination of dna and proteins make up what

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?