On a x-y graph of volume (x-axis) and mass (y-axis), the slope of the line represents

What are similarities and differences between refraction, reflection, diffraction and absorption?

Observations show that interstellar clouds can have almost any shape and

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.