If a wormhole connects between ground and sky, does an object require extra energy to pass through it?
91773
How does conservation work in wormholes?
121281
Can two particles remain entangled even if one is past the event horizon of a black hole?
87861
Do teleportation spells conserve momentum?
6592
if a body is stopped by means other than friction, where does energy go?
58462
Impossibility of time travel due to energy conservation?
23078
Where does the extra kinetic energy come from in a gravitational slingshot?
91385
Does quantum mechanics allow faster than light (FTL) travel?
37941
Can light travel slower than the maximum?
54020
Does a moving object curve space-time as its velocity increases?
157284
How do wormholes work?
27525
Where does the energy get transferred when we push the wall?
114449
Gravitational slingshot of light using a black hole/massive object
14615
Can electricity flow through vacuum?
60687
Solid objects inside the event horizon - can they remain "solid"?
122524
Is energy conserved when things fall into a black hole?
79614
Many-worlds: Where does the energy come from?
54113
Does the potential energy of a single object exist?