What is the potential difference between xi=2.0m and xf=3.0m?

Explanation:

To find the potential difference between and , we just need to observe which vertical coordinates belong to these given values.

From the graph, we observe that correspond to , because they form the point which is given in the graph.

With the same reasoning, we observe that corresponds to , because they both together form the points .

Now, the potential difference between the given distances, we just need to subtract

Which also refers to the variation of the potential.

Therefore, the potential differential is

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

gas and liquid