Kayden has a job lifting really heavy rocks up four floors. Each floor is 3m high and he gets up by using a ladder. The strength he needs to lift each rock is 200 Newtons. Calculate the work he does when he lifts one rock up one floor.

Calculate the work Kayden does in an 8 hour day if he lifts 5 rocks up 4 floors in one hour.

Is Kayden getting any Mechanical advantage? Explain.

we don't have enough info to solve this

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

ab will be equal to

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.