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This question is about converting kinetic energy into gravitational potential energy. Escape velocity is the speed required to leave the gravitational field of a mass, in this case it's a planet. In o...
Whilst this proof is beyond the scope of A level physics, it is well within the scope of A level Maths as it relies solely on the chain rule.First let us note that Fx = W where F is force, x is distan...
The main evidence that we currently have to support the Big Bang Theory is the cosmic background radiation. This is electromagnetic radiation that appears to be evenly spread throughout the universe. ...
This question was answered most famously by Young's double slit experiment. The double slit experiment shows that photons (as well as all light and matter) can be thought of as both a wave AND a parti...
This is only the case in a vacuum because there are no air particles, so there is no air resistance; gravity is the only force acting. You can see it for yourselves with this ...
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