Answer:
12.5N
Explanation:
Data;
W = 50N
Fh = 15N
μ = 0.4
Fv= ?
The second attachment is showing the resolution of the vectors.
The normal force acting on the box (N) = W - Fv
The frictional force ( ⃗f) = Fh
Frictional force ⃗f = μN = μ(W - Fv)
μW - μFv = Fh
Fv = W - (Fh/μ)
Fv = 50 - (15/0.4) = 50 - 37.5
Fv = 12.5N
The smallest vertical force which moves the box is 12.5N
Answer:
the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.
Answer:
the answer is D
as an electron is composed of positive charges
Answer:
0.99 that is about 99%
Explanation:
Detailed explanation and calculation is shown in the image below
Convention is known as one of the driving forces of atmospheric circulation. Convection is defined as the heat transfer due to bulk movement of the molecules within fluids like liquids and gases, uncluding th molten rock. Convention takes place through diffusion, advection or can be both and it is usually a domination form of heat that transfer into liquids and gases.
