i am wondering, what if someone removes the sun? we know that we notice the absence of sun after 8 minutes because of light speed. but what about gravity speed, is this also equals to light speed? or elsethx.
At the correct orbital height above a black hole, absolutely. It would have to be an orbit at which light drops towards the black hole at a rate that is equal to the trajectory around the hole. Similar to the way the moon drops around the Earth at the same rate as the Earth surface drops away from it.
photons are particles which have no mass hence no question of gravitational force which is proportional to the product of masses of the bodies even if you consider on as earth it has some mass and the other is a photon whose mass is zero so the product is zero.
transferring on the speed of sunshine purely the article turns into infinite in mass which have some mass, even as talking about PHOTON first you need to keep in mind that, does PHOTON have mass? No! PHOTON would not have mass, so how can a massless merchandise be infinite? I hop this may help you
Sometimes fire extinguishers can leak out over time. If you ever shot the extinguisher that would give you your answer. Fire extinguishers are a one time use product - once the seal has been broken they leak the remaining pressure out rather fast, usually within a day or so. It may be that a neighborhood kid or something wanted to test it out and see what it does, but either way you will need a new one. Just make sure to check them a lot. It could also have been the heat or cold in the garage, make sure that the extinguisher is rated for the temperature you are exposing it to - it is possible that the seals could be expanding and contracting to the point of failure. Hope this helps Suthernreb
Light follows a straight line. Light bends around an object with enough mass because mass warps space around it. (Kind of like holding a rubber sheet tight at all sides, and setting a steel ball in the middle. The sheet will warp around the ball) With enough gravety (Black holes, for example) space can be twisted around so that the light will follow a path that from outside looks like an orbit, but if you were standing on the photon, would look perfectly straight. Going from a physics definition an orbit is the path that an object makes around another object while under the influence of a source of centripetal force, such as gravity. So, with enough gravety to curve space in on itself, yes. Light can orbit an object.
