Practica Mecanica.docx

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Resultados: A partir de los resultados obtenidos se calcularΓ‘ la energΓ­a cinΓ©tica en cada uno de los casos para posteriormente el llenado de la tabla. πΈπ‘˜ = β„Žπ‘£ βˆ’ 𝛷 DΓ³nde: h=constante de Planck=6.626π‘₯10βˆ’34 𝐽/𝑠 v=la frecuencia del color en este caso=𝑓 = π‘β„πœ† 𝐻𝑧 Ξ¦=el voltaje obtenido=mV Entonces calculando esto: πΈπ‘˜ = (6.626π‘₯10βˆ’34 )(0.5) βˆ’ (297.7 π‘₯10βˆ’3 )=-0.2977 J πΈπ‘˜ = (6.626π‘₯10βˆ’34 )(0.41) βˆ’ (244.02π‘₯10βˆ’3 )=-0.24402 J πΈπ‘˜ = (6.626π‘₯10βˆ’34 )(0.026) βˆ’ (146.4π‘₯10βˆ’3 )=-0.1464 J πΈπ‘˜ = (6.626π‘₯10βˆ’34 )(.045) βˆ’ (333.08 π‘₯10βˆ’3 )=-0.33308 J πΈπ‘˜ = (6.626π‘₯10βˆ’34 )(0.037) βˆ’ (217.8π‘₯10βˆ’3 )= -0.2178J πΈπ‘˜ = (6.626π‘₯10βˆ’34 )(0.037) βˆ’ (178.8 π‘₯10βˆ’3 )=-0.1788 J

Color Rojo Naranja Amarillo Verde Azul Violeta

Longitud de onda Ξ›(m) 6200 5925 5500 5300 4650 4645

Voltaje de corte V0(Volts) 297.7 mV 244.02 mV 146.4 mV 333.08 mV 217.8 mV 178.8 mV

Frecuencia F(Hz) 0.5 0.41 0.026 .045 0.037 0.037

EnergΓ­a cinΓ©tica Ek(J) -0.2977 -0.24402 -0.1464 -0.33308 -0.2178 -0.1788

Frecuencia Xi(v)

-0.2977 -0.24402 -0.1464 -0.33308 -0.2178 -0.1788 -1.4178

0.5 0.41 0.026 .045 0.037 0.037 1.055

π‘š= 𝑏=

EnergΓ­a cinetica Yi(Ek)

π‘›βˆ‘π‘₯π‘–π‘¦π‘–βˆ’βˆ‘π‘₯𝑖(βˆ‘π‘¦π‘–) π‘›βˆ‘π‘₯𝑖 2 βˆ’(βˆ‘π‘₯𝑖)2

=

Xi2

-0.14885 -0.10004 -3.8064x10-3 -0.01498 -8.0586x10-3 -6.6156x10-3 -0.2823506

.25 0.1681 6.76x10-4 2.025x10-3 1.369x10-3 1.369x10-3 0.423539

6(βˆ’0.2823506)βˆ’(1.055)(βˆ’1.4178)

βˆ‘π‘₯𝑖 2 (βˆ‘π‘¦π‘–)βˆ’βˆ‘π‘₯𝑖(βˆ‘π‘₯𝑖𝑦𝑖) π‘›βˆ‘π‘₯𝑖 2 βˆ’(βˆ‘π‘₯𝑖)2

xiyi

6(0.423539)βˆ’(1.055)2

= 138.86x10-3

(0.423539)βˆ’(1.4178)βˆ’(1.055)(βˆ’0.2823506)

=

6(0.423539)βˆ’(1.055)2

=-212.5871x10-3

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