What quantities should you graph on the vertical and horizontal axes of your graph?• How will the graph determine Planck's constant and the work function?5. Calculate a percent error between your experimental value and the known value. How does your measured value of Planck'sconstant compare to the known value?What accounts for the differences? (h= 6.63 x 10^-34 J.s) 3. Use this table and graph to collect and analyze data.Hint: KE=eV in J12345When e = electron charge = 1.6x10^-19CV- is the Stoping Potencial,f=c/wave length,c- is the speed of light on the empty space, c=3*10^8m/s*KE max (J)******wavelengthnm4.054.735.325.896.352.5x10-192x10-191.5x10-191x10-19variable50Mstopping potential ...V1.81.20.900.980.48✔Display Curve Fit UncertaintiesKE max Curve:y = Ax+BA: 6.92 x 10-27 +1.25 x 10-27B: -2.33 x 10-197.39 × 10-20 JRMSE 2.66 x 10-20 JT: 0.955variableFrequency55MHZ7.41e+76.34e+75.64e+75.09e+74.72e+7XKE max vs Frequency V60MFrequency (HZ)KE max2.88e-191.92e-191.44e-191.57e-197.68e-2065My***70M●*

Solution: The graph between the maximum kinetic energy and the frequency gives the straight line…

Answered: • What quantities should you graph on…

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3. Determine the experimental value of Planck's constant, h, from this graph using Excel. 4. Determine an equation of the line. The y-intercept of the line is the work function, p, of the metal. 5. Write the equation of the line in the form y = mx + b: ¥=0.4157 x - 6. Convert the work function to eV. 7. Extrapolate the line until it intersects the horizontal axis and vertical axis. 8. The slope of the line is the experimental value of Planck's constant (h). Find the % error for h using the formula below. Data Table Frequency (x10¹4 Hz) 11.8 10.6 9.9 9.1 8.2 6.9 2,3042 4= Energy (EV) 2.60 2.11 1.81 1.47 1.10 0.57
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