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Here we have two simultaneous equations with two unknowns. In order to solve this, we must first elimate one of the variables. 

To do this we will first make the coefficient (the number b...

There's a handy trick for choosing which of the equations of motion, or SUVAT equations, you need to use given a set of terms – let’s call it the VUAST trick. For these kinds of questions, there are al...

Example- Biblioteca (library)

1.)a) Catedral     ----->  

b) Ayuntamiento   ----->

c)  Polideportivo -----> 

d) Centro comercial  --->...

The presence of calcium ions causes tropnonin to detach from tropomyosin-this exposes the mysoin head binding sites. Myosin head groups attach to the surrounding actin filaments forming a cross bridge....

The SAN is the pacemaker, situated at the top of the right atrium. The SAN initiates a wave of excitation at regular intervals. The wave of excitation quickly travels over the walls of both atria. As i...