Can the big bang's sound still be heard?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

The air that we breath is made mostly of which gaseous molecule

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.