Iwas gone for a day and my teacher taught us somthung new and gave me this worksheet and said i have to learn the new material myself! how do i do these problems?

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Gunpowder residue is most likely to show up where on a shooters hands

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)