Which technique uses a porous barrier to separate a solid from a liquid?
a. chromatography
b. crystallization
c. distillation
d. filtration

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction