As a rule of thumb, the maximum power point can be taken to be some fixed fraction of V. Check this by determining this fixed fraction for a Sunpower X-series photovoltaic cell for which Voc=0.710 V and I = 6.39A at one sun. Assume a series resistance of 6.7 m2, an infinite parallel resistance, and an ideality factor of unity. This problem is meant to be done numerically, a) Determine the maximum power and fill factor for 11 = 6,39 A.
b) What is the fraction, V.../Voc where V. is the voltage at the maximum power point for 1 = 6,39 A and IA
c) Determine the fill factor for li = 6.39 A but without a series resistance.
d) Compare the two calculated fill factors using the approximation discussed in lecture (or on PVeducation. org).

You have been consulted by the mobile phone company hookup about a new augmented reality product called “brows”. they want to develop an alternative to google glasses, which, you recall, is a proposed new product which plans to superimpose a whole range of wireless google services over the user’s ordinary vision of the world. these appear in little circles and ovals, and let you phone people, take photographs, navigate across cities and inside buildings, find shops and update your social media. brows would do this too, but not be limited to special google services. the user would wear a small cylinder-shaped device designed to fit on top of their existing eyewear (glasses or sunglasses). it would project a reversed image onto the inside of the lenses, the reflection of which would be in focus for the user. instead of voice control, the user would control the device by eye and neck movements, which the device would track. the device would connect via bluetooth to the user’s phone, which would supply most of the computing power and wireless connectivity. hookup also wants to know what existing services would be most in demand, and which would not work well with brows. using your knowledge of augmented reality, wearable technology and interface design, is the project feasible? if not, why not? if feasible, how could the product need to be modified for a better experience?

Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward