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Given that the music is supposed to set the scene of a classical period, it is unsurprising that Portman uses an oom-cha-cha bass accompaniment in ‘Six Years Later’, a typical characteristic of the waltz ...

Within the central swell of the galaxy, we can see that the orbital velocity increases almost linearly with distance, which corresponds with the formula for orbital velocity (namely that v=sqrt(GM/r)), as...

Timing in the History A Level is one of the biggest challenges encountered by most people who are preparing for the exam: it's very common for students to worry about running out of time, or not writing e...

Homeostasis is the maintaining of a constant internal environment to allow for healthy functioning of the body. Three examples would be the control of water levels in the kidney via ADH, control of temper...

First, we need to find a formula for the speed of the particle, v, at a given time, t. Relate the speed, v, to the force f, using Newton's 2nd Law: f(t) = mdv/dt (remembering that acceleration is t...