Jane with a weight of 637.65 n accerlerates at a constant acceleration . the net horizontal force is 130 n. her current velocity is 6 m/s. 1) what is her body mass
2) what is her accleration
3) what is her velocity after 2 seconds
4) what is the horizontal distance she travels in these 2 seconds ?

1) Her body mass is m=65.06 kg

2) Her acceleration is a= 1.99 m/s²

3) Her velocity after 2 secs is Vf= 9.98 m/s

4) She travels a distance of d= 15.98 meters in these 2 seconds.

Explanation:

W= 637.65 N

F= 130 N

vi= 6 m/s

g= 9.8 m/s²

m= W/g

m= 65.06 kg

a= F/m

a= 1.99 m/s²

Vf= Vi + a *t

Vf= 9.98 m/s

d= Vi * t + a * t²/2

d= 15.98m

the device is called “ rocket engine”

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