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# NextGenLog: #MEMS: Gyro/accelerometer Combo Chip Debuts

How did things play out in the duel of the handhelds? Between 2005 and 2011, Sony managed to promote greater than 67 million PlayStation Portables [supply: Sony] — not bad for the corporate’s first handheld. Nintendo’s «gimmick» bought greater than 140 million units over that very same time interval [source: Nintendo]. Why is all this necessary? As a result of a rematch is on the horizon.

Like many elegant options, the band embraces the KISS principle — keep it simple, stupid. Because it can’t probably measure every system in the physique, it measures just one and makes use of the info the identical way a monetary knowledgeable would leverage key economic indicators to make choices concerning the well being of the worldwide economic system. That system is the cardiovascular system, which reveals itself most plainly in the number of times the guts beats per minute. «The heart is elementary to understanding your health and constantly measuring coronary heart fee can offer unprecedented insights,» said Foundation CEO Jef Holove in a press launch.

Show Answer a. $L_\textEarth=7.06\occasions 10^33\,\textual contentkg\cdot \textm^2\text{/}\textual contents$, $\Delta L=5.63\times 10^33\,\textual contentkg\cdot \textm^2\text{/}\textual contents$; b. $\tau =1.7\occasions 10^22\,\textual contentN\cdot \textual contentm$; c. The 2 forces at the equator would have the same magnitude but different directions, one in the FOG North Seeker path and the other within the south route on the opposite aspect of Earth. The angle between the forces and the lever arms to the middle of Earth is $90^\circ$, so a given torque would have magnitude $\tau =FR_\textE\,\textual contentsin\,90^\circ=FR_\textual contentE$. Each would provide a torque in the same path: $\tau =2FR_\textE\Rightarrow F=1.3\occasions 10^15\,\textual contentN$

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