1)how many red blood cells could you line up across the grain of sand? 2) How many red blood cells could you line up across the diameter of a penny (0.02 m)?

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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 of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

What is a good example of instantaneous speed