Hi plz help thx<3333

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.)

Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8

The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c