i think centripetal Force
The two poles of magnets must have equal and opposite strength so they cannot be separated
Hope it helps
Answer: 760 N
Weight is the force acting on the body due to gravity. This weight is shown by weighing scale which measures the normal force acting against the gravitational pull when the person stands on it.
When Lucy stands on the weighing scale, net force due to gravity is 
Hence, weight of Lucy is 760 N
Answer:
Vertical -- angle --- horizontal
Explanation:
The intensity transmitted by a polarized is given by the expression
I = I₀ cos² θ
Where tes is the angle between the polarization of light and the direction of polarization.
From this expression it is observed that if the angle is zero (parallel) the transmission is maximum and if in the angle it is 90 ° (perpendicular) the transmission is zero.
With these arguments we will analyze the three polarizers placements.
The light has an initial vertical polarization, so that the first possible polarizer is transmitted, it must be parallel, bone with vertical polarization
It is second polarizer must have some angle so that the light that comes out has vertical and horizontal polarization
Finally, the third polarizer must be horizontal for the horizontal second polarizer component to be transmitted.
Consequently the order is
Vertical -- angle --- horizontal
