[12] 40 N
1 kg
A block of mass 1 kg is connected to another
block of mass 4 kg by a light inextensible string.
The at 30° to the horizontal, by means of a
constant 40 N force parallel to the plane as
shown in the diagram below.
The magnitude of the kinetic frictional force
between the surface and the 4 kg block is 10 N.
The coefficient of kinetic friction between the 1 kg
block and the surface is 0,29.
4 kg
30°
21
2.2
(2)
2.3
State Newton's third law of motion in words.
Draw a labelled free-body diagram showing ALL the forces acting on the 1 kg block as it moves up the
incline.
Calculate the magnitude of the
2.3.1 Kinetic frictional force between the 1 kg block and the surface
23.2 Tension in the string connecting the two blocks
(5)
(3)
(6)
PAS​

2.2

Explanation:

i think this is right answer

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia