The magnitude of the linear momentum of the object cannot be calculated without the velocity. More information is needed to determine the changes in momentum.
The magnitude of linear momentum, denoted as p, of an object is given by the product of its mass (m) and velocity (v), which can be expressed as p = mv.
In this case, you mentioned a 43.7 kg object on the Equator, but you didn't provide its velocity, so we cannot calculate its linear momentum.
As for the net change in the object's momentum in the 6 hours following a certain time, we need more information about the object's motion or external forces acting on it to determine the change in momentum, represented by ∆p.
Similarly, to calculate the total change in momentum 12 hours after a specific time, we would need additional details.