ezrakipchumba90

4. If a 2 mm thick plate of material transmits 70% of the incident light, what percentage will be transmitted by a 0.5 mm thick plate?

PROBLEMS FOR PRACTICE

1. What is the energy in kcal of one mole of photons of 2573 A wavelength?

2. Calculate the energy of one photon of light of 2450 A wavelength. Will it be able to dissociate a bond in a diatomic molecules which absorbs this photon and has a bond energy equal to 95 kcal per mole?
Planck’s constant (ft) = 6.626 • 10*27 erg s molecule*1 Velocity of light (c) = 3 • 1010 cm sql

Avogadro’s number (N) = 6.02 • 1023
flint: Calculate the energy of the photon. If this energy is greater than that required to break the bond (bond energy), dissociation of the bond will happen.

3. Calculate the value of an einstein of energy in electronvolts for a radiation of 3 • 101S sql
frequency.

4. Calculate the value of the einstein corresponding to radiation of 6000 A wavelength.

5. Find the value of an einstein of energy for radiation of 4240 A wavelength.

contemporary world issues - Impact of the Economic Crisis on the International Community

Research paper 👇🏼

Must contain at least five paragraphs. In your own words, do the following:

A report on the international impact of the global crisis, including three outcomes of the overall impact of the economic crisis on developing countries. (50 points)

A report on one of the five regions of the world covered on the United Nations website, with a specific focus on how the economic crisis has impacted that region. Start by addressing the questions below. (50 points)
1. How has the economic crisis impacted the region?

2. What steps are being implemented by the UNDP to facilitate development?
3. What is the immediate economic outlook for the region?
4. What other steps are being taken locally or globally to address the issues being faced?

Website- United Nations Development Programme: The Economic Crisis

On this painting Hubert Robert, Le Salle des Saisons du Louvre, c. 1800. Musée du Louvre, Paris. Examine the two people standing in the front carefully. How do people engage with the artwork on show in the gallery? What would you say about their nonverbal cues?