Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp ($\lambda = 546.1$ nm) is used, a stopping potential of 0.376 V reduces the photocurrent to zero. What stopping potential would be observed when using the yellow light from a helium discharge tube ($\lambda = 587.5$ nm)?

Bob Morin opened a medical practice specializing in surgery. During the first month of operation (August), the business, titled Bob Morin, Professional Corporation (P.C.), experienced the following events:

$$\begin{matrix} \text{Aug. 6} & \text{Morin invested \$39,000 in the business, which in turn issued its common stock to him. }\\ \text{9} & \text{The business paid cash for land costing \$29,000. Morin plans to build an office building on the land. }\\ \text{12} & \text{The business purchased medical supplies for \$1,700 on account. }\\ \text{15} & \text{Bob Morin, P.C., officially opened for business. }\\ \text{15-31} & \text{During the rest of the month, Morin treated patients and earned service revenue of \$7,600, receiving cash for half the revenue earned.}\\ \text{15-31} & \text{The business paid cash expenses: employee salaries, \$1,300; office rent, \$700; utilities, \$500. }\\ \text{31} & \text{The business sold supplies to another physician for cost of \$700. }\\ \text{31} & \text{The business borrowed \$12,000, signing a note payable to the bank. }\\ \text{31} & \text{The business paid \$800 on account.}\\ \end{matrix}$$

Analyze the effects of these events on the accounting equation of the medical practice of Bob Morin, P.C. After completing the analysis, answer these questions about the business. a. How much are total assets? b. How much does the business expect to collect from patients? c. How much does the business owe in total? d. How much of the business’s assets does Morin really own? e. How much net income or net loss did the business experience during its first month of operations?

Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp $(\lambda=546.1 \mathrm{nm})$ is used, a retarding potential of 1.70 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? (b) What stopping potential would be observed when using the yellow light from a helium discharge tube $(\lambda=587.5 \mathrm{nm})$?

(a) When ultraviolet radiation of wavelength 58.4 nm from a helium lamp is directed on to a sample of krypton, electrons are ejected with a speed of 1.59 Mm $s^{−1}$. Calculate the ionization energy of krypton. (b) When ultraviolet radiation of wavelength 58.4 nm from a helium lamp is directed on to a sample of xenon, electrons are ejected with a speed of 1.79 Mm $s^{−1}$. Calculate the ionization energy of xenon.

With light of wavelength 520 nm, photoelectrons are ejected from a metal surface with a maximum speed of $1.78 \times 10^5 m/s.$ (a) What wavelength would be needed to give a maximum speed of $4.81 \times 10^5m/s?$ (b.) Can you guess what metal it is?

Which gas would you expect to deviate most from ideal behavior under conditions of low temperature: $F_2, Cl_2,$ or $Br_2$? Explain .

In a photoelectric experiment using sodium, when incident light of wavelength 570 nm and intensity 1.0 $\mathrm { W } / \mathrm { m } ^ { 2 }$ is used, the measured stopping potential is 0.28 V. (a) What would the stopping potential be for incident light of wavelength 400.0 run and intensity 1.0 $\mathrm { W } / \mathrm { m } ^ { 2 } ?$ (b) What would the stopping potential be for incident light of wavelength 570 nm and intensity 2.0 $\mathrm { W } / \mathrm { m } ^ { 2 } ?$ (c) What is the work function of sodium?

The work function for platinum is 6.35 eV. For photons of energy 8.50 eV, what stopping potential would be required to arrest the current of photoelectrons?

Calculate the energy in electron volts of a photon having a wavelength in the x-ray range, 5.00 nm.

Calculate the energy in electron volts of a photon having a wavelength in the visible light range, 500 nm.

Calculate the energy in electron volts of a photon having a wavelength in the microwave range, 5.00 cm.

An electron has a kinetic energy of 3.00 eV. Find its wavelength.

Molybdenum has a work function of $4.2 \mathrm{eV}$. (a) Find the cutoff wavelength and threshold frequency for the photoelectric effect. (b) Calculate the stopping potential if the incident light has a wavelength of 200 nm.

Michaela has up to $20 to spend on bottled water and orange juice for a group hike. it cost$2 for each bottle of water and $4 for each bottle of orange juice. a) write an inequality statement for this situation b) graph the inequality c) can Michaela buy 5 bottles of water and 7 bottles of orange juice? explain why or why not using the graph to justify your answer