Two spherical objects have masses of 8.1 x 103 kg and 6.4 x 106 kg. The gravitational attraction between them is 125 N. How far apart are their centers?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

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.)