A vector has a length of 8 and rises at an angle of 55'. What is the
x-component of this vector? (Hint:

An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 v for 0.65 ms. the resistance of the heart muscle between the pacemaker’s electrodes is 550 ω. find (a) the current that flows during a pulse, (b) the energy delivered in one pulse, and (c) the average power supplied by the pacemaker.

The plum pudding model of the atom state that ?

Which articulations allow for greatest range of motion?