El unico que se es el del oxígeno: o2
<span>A voltage source in a circuit provides electrical ENERGY.
In fact, a voltage source is a device (like a battery) that creates a potential difference between two points of the circuit. This potential difference allows charge carriers to move from one side of the device to the other side, flowing through the circuit, producing a current, and current is a form of electrical energy.</span>
Thermal energy is converted to chemical energy.
A car moves along an x axis through a distance of 900 m, starting at rest (at x = 0) and ending at rest (at x = 900 m). Through the first 1/4 of that distance, its acceleration is +6.25 m/s2. Through the next 3/4 of that distance, its acceleration is -2.08 m/s2. What are (a) its travel time through the 900 m and (b) its maximum speed?
<span>Solve for the time at the 1/4 mark. That's 225 m. How? d = (1/2)at^2 ( initial velocity zero). Thus 225 = (1/2) 6.25 t^2. t^2 = ( 225 * 2 ) / 6.25. t = 8.5 sec. </span>
<span>At the other end t^2 = (675 * 2) / 2.08 -- we reversed the sign and ran time backwards. t = 25.5 sec. </span>
<span>So total time is 8.5 + 25.5 or 34 sec. </span>
<span>Since zero initial velocity: v^2 = 2 a d. Here, v^2 = 2 * 6.25 * 225. v = 53 m/s. That's the fastest speed since braking then occurs.</span>
If I'm right you use the formula E=mgh
so it would become E=8×1.6×2
Your answer is 25.6J (joules) :)