A20kg metal block is placed on a horizontal surface. the block just begins to slide when horizontal force of 100n is applied to it (a) calculate the coefficient of static friction (b) if the coefficient of kinetic friction is 0.4 then find minimum force to maintain it's uniform motion

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Explanation:

I can't do the exercise a because you need the Fs to calculate the coefficient of static friction.

scorpions are,

c.arachnids

  scorpions are animals in the order scorpiones, under the class arachnida, which makes them a distant cousin of spiders

happy to

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ice to water 1 water to vapour 2 latent heat