identidy its molecular geometry and explain how its geometry and hte polarity of its bonds result in a nonzero dipole moment

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force