Reference no: EM13280171
1. The length of recorded history for humankind is about 5000 years. Clearly, most people view this span as being very long. How does it compare to the length of geologic time? Calculate the percentage or fraction of geologic time that is represented by recorded history. To make calculations easier, round the age of Earth to the nearest billion.
2. After entering a dark room, you turn on a wall switch, but the light does not come on. Suggest at least three hypotheses that might explain this observation. Once you have formulated your hypotheses what is the next logical step?
3. How is the Earth's inner core different from its outer core?
4. The Earth is considered a dynamic planet, compared to the Moon or Mercury. Why?
5. The moon has virtually no magnetosphere. Why?
6. Explain how the principle of uniformitarianism allows for catastrophic events.
7. The concentric layer that makes up most of Earth's volume- is it?
A. the inner core B. outer core C. mantle D. Asthenosphere E. crust
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What was your effective ear over the holding period
: You hold the bond to maturity, but you do not reinvest any of your coupons. What was your effective EAR over the holding period?
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Determine what is the atomic polarizability of argon
: Treat as an ideal gas ie it obeys pV=nRT law where pis pressure, V is volume, n is number of moles, R=82.056*10-6 m3-atm/mole-K is the universal gass constant and T is th absoulte temperature.
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Explain oxygen are required for the complete combustion
: How many moles of oxygen are required for the complete combustion of 4.0 moles of decane to give CO2 and H2O
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Determine the stopping potential as a function of wavelength
: Determine the stopping potential as a function of wavelength at 433.9, 404.7, 365.0, 312.5, 253.5 nm.
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Calculate the percentage or fraction of geologic time
: Calculate the percentage or fraction of geologic time that is represented by recorded history. To make calculations easier, round the age of Earth to the nearest billion.
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Calculate rdyn when the diode is biased at v
: The dynamic resistance for rectifying junctions is given by Rdyn =(dI/dV)-1. For a junction diode having reverse saturation current I0=10-9A, Calculate Rdyn when the diode is biased at V=VF=0.7V, then V=VR=0.5V.
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What is the invoice price of the bond
: A coupon bond paying semiannual interest is reported as having an ask price of 126% of its $1,000 par value. If the last interest payment was made one month ago and the coupon rate is 6%, what is the invoice price of the bond?
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How much is the security worth today
: Suppose a security will pay $1,000 three years from now. If the appropriate interest rate is 4.00% compounded annually, how much is the security worth today?
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Calculate built-in potential and width of depletion region
: A Schottky diode is formed between a metal of work function eφm=4.7eV, and a semiconductor of electron affinity eφB=4.0eV. The semiconductor is n-type with Nd=1016 cm-3, Nc=1019 cm-3 and εR =12.
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