Arod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10−8 ω ⋅ m. if a potential difference of 0.50 v is placed across the ends of the rod, at what rate is heat generated in the rod?

8.33 x 10^-16 Watt

Explanation:

l = 2 m, A = 2 x 2 mm^2 = 4 x 10^-6 m^2

resistivity, p = 6 x 10^-8 ohm metre, V = 0.5 V

Let R be the resistance of teh rod

R = p x l / A

R = 6 x 10^-8 x 2 / (4 x 10^-6) = 3 x 10^14 ohm

Heat generated per second = V^2 / R = (0.5)^2 / (3 x 10^14)

 = 8.33 x 10^-16 Watt

terd muffin is the correct answer

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i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!