Answer:
1.65×10⁻⁶ N
Explanation:
m = Mass of ant = 
r = Radius = 50 m
t = Time taken to complete on rotation = 60 seconds
Angular velocity

Centripetal acceleration is force that is acting outward

The magnitude of the upward force felt by the ant due to the second hand would be 1.65×10⁻⁶ N
Answer:
I = 0.44 A
Explanation:
The magnetic force on a conductor is given by the expression
F = I L x B
Where bold letters indicate vectors, I is the current, L is the vector in the direction of the current, and B is the magnetic field
Since the force is maximum, the wire must be perpendicular to the magnetic field, therefore
F = I L B sin 90
I = F / L B
Let's calculate
I = 1.2 / 1.5 1.8
I = 0.44 A
They cant occupy the same box in the periodic table because each atom has a certain number of protons which is the atomic number and no two atoms have the same amount of protons.