During the period that the moon’s phases are changing from new to full, the moon is waxing exhibiting retrograde motion waning approaching earth

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

Most short-period comets do not have randomly oriented orbits because

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.)