Answer:
0.4
Explanation:
F-Fr=ma where F is applied force, Fr is friction, m is mass and a is acceleration.
Since the mass is moving with a constant velocity, there's no acceleration hence
where N is the weight of object and \mu is coefficient of kinetic friction.
![F=\mu N and making [tex]\mu](https://tex.z-dn.net/?f=F%3D%5Cmu%20N%20and%20making%20%5Btex%5D%5Cmu)
the subject
Substituting F for 8 N and N for 20 N
Therefore, coefficient of kinetic friction is 0.4
500 N is the answer, you just tell that the moon is attracted towards the person because of the Earth's huge mass.
Answer:
0 J
Explanation:
As work is force times displacement, if no displacement occurs, no work occurs.
Because the electromagnets can pick up magnetic material and move it around, hope this helps
