Zero. All the materials used to make the buildings and vehicles came from the Earth itself so the net result would be zero.
The bridge doesn't simply 'sit' on the edges of the river. There are solid foundations that have been dug deep into the Earth. Additionally, there is a weight-limit for vehicles travelling over the bridge - of 18 metric tonnes.
Tornadoes have lifted many things. Strong tornadoes have been known to lift up large vehicles, trees, and even buildings.
Firstly, the term 'weight' of earth is not completely correct according to physics. Weight of a body on earth is defined as the force with which earth pulls the body. The correct question should have been about the 'mass' of earth which is 5.9742* 10^24 kg.
No. There are man-made probaes that have been sent from earth, but other than that it is just rocks and dust.
Yes. Vehicles have been hit by lighting.
Fire zones are created to prevent vehicles from blocking access to buildings. Your vehicle was in a place it shouldn't have been. You being in the vehicle does not change that.
Oil revenue has been invested in construction of impressive buildings.
Comets and meteorites have been falling on the Earth since, adding weight. Water has been evaporating, and some of it ends up high enough that it is ionized, releasing atomic hydrogen. Some of that hydrogen evaporates into space and is blown away by the solar wind. So it is highly unlikely that the earth's mass remains constant. I suspect that the variation over just one year may be measured in tons. Compared to the size of the entire earth, that's nothing, but it's not a constant weight!
There have been a number of robotic exploratory vehicles sent from Earth to other planets and asteroids, but there is no indication that other planets have sent any probes to Earth. Of course, we would not necessarily see it. It might be designed to be inconspicuous, a stealth probe.
No person has ever 'explored' any planet, besides Earth. Several people have been to the moon. Unmanned vehicles have been to Mars. Mankind has only 'explored' other planets visually.
If it's falling near the earth's surface, the weight is 27.56 pounds (rounded), regardless of how long or how far it's been falling.
where are my buildings and trees on frontierville ..been missing about three weeks now this is crazy