The atmosphere of mars is mostly (molar mass ) under a pressure of 650 pa, which we shall assume remains constant. in many places the temperature varies from 0°c in summer to ‐100°c in winter. over the course of a martian year, what are the ranges of (a) the rms speeds of the co2 molecules and (b) the density (in mol/m3 ) of the atmosphere?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

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.

Which is the most accurate name for the covalent compound p2o3?