During the Middle ages, many "barbaric" nations have constantly attacked the Roman Empire, they spit into the West Roman Empire and the more wealthy Byzantines aka the East Romans. The West Roman Empire began to dissolve smaller because their army couldn't handle the constant attacks on them so they finally disappeared in 476 B.C.The Byzantines began to stretch even more until 1453 A.D. Just then After the fall of the Byzantines, a new Order of Romans came about called, The Holy Roman Empire sprouted up in Central Europe and they lasted until 1805 A.D. (I know this is more than the Middle Ages)
Keeping up on current events now is an important part of citizenship because we all need to be aware of what’s going on around us
Complete question:
A casting with a mass of 500 kg rests on a surface with a slope of 20° to the horizontal. The coefficient of friction is 0.25.
Calculate;
(a) the component of the weight of the object perpendicular to the surface
(b) the component of the weight of the object parallel to the surface
Answer:
(a) the component of the weight of the object perpendicular to the surface is 4,604.5 N
(b) the component of the weight of the object parallel to the surface is 1,675.9 N
Explanation:
Given;
mass of the casting, m = 500 kg
angle of inclination of the casting, θ = 20⁰
the coefficient of friction, k = 0.25
(a) the component of the weight of the object perpendicular to the surface;
F⊥ = mgcosθ
F⊥ = 500 x 9.8 x cos20
F⊥ = 4,604.5 N
(b) the component of the weight of the object parallel to the surface
F|| = mgsinθ
F|| = 500 x 9.8 x sin(20)
F|| = 1,675.9 N
Groundwater is the water found underground in the cracks and spaces in soil, sand and rock. It is stored in and moves slowly through geologic formations of soil, sand and rocks called aquifers.
Four, citizenship by birth in the U.S., citizenship through derivation, citizenship through acquisition, and citizenship through naturalization. Most immigrants in the United States become citizens through the naturalization process.
