It’s physical something you can physically do
Mass.
Because mass doesn't depend on weight but weight depends on mass.
The earth's magnetic field is associated with the <span>core.</span>
To determine the force that acts on the mass, just multiply the mass by the gravitational field. Using the given data,
F = (2.50 kg)(14 N/kg) = 35 N
Therefore, the force that acts on the mass is equal to 35 N.
The focal point of a concave mirror is halfway along the radius, therefore the radius would be 2•16= 32 cm