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The enthalpy of fusion of water is 6.01 kJ/mol. Sunlight striking Earth's surface supplies 168 W per square meter (1W = 1 watt = 1 J/s).
(a) Assuming that melting of ice is only due to energy input from the Sun, calculate how many grams of ice could be melted from a 1.00 square meter patch of ice over a 12- hour day.
(b) The specific heat capacity of ice is 2.032 J/g °C. If the initial temperature of a 1.00 square meter patch of ice is what is its final temperature -5.0 °C e after being in sunlight for 12 hours, assuming no phase changes and assuming that sunlight penetrates uniformly to a depth of 1.00 cm?
Sketch the Capacitance-Voltage characteristics for both devices based on part (d) by giving appropriate labeling to the voltage and capacitance axis. You may assume high f measurements.
design a simple 4-bit binary divider , takes two numbers from only 0 to 9. This circuit will perform A/B and B > A will give zero, the answer will be just the integer part ( for example : o111 / 0010 = 0011 ).
a pn-junction is uniformly doped and has dopant concentration of na 4 x1016 cm-3 in the p-region at 300k. at zero bias
When a type of integrated circuit is tested at 185 degrees Celcius, 10% of the circuits fail within two weeks with VDD = 1.0V. Estimate the 10% lifetime at 95 degrees Celcius and 1.0V assuming Ea = 1.0eV.
A Si sample contains 1016 cm-3 In acceptoratoms and a certain number of shallow donors. The In acceptorlevel is 0.16eV above Ev, and EF is 0.26eVabove Ev at 300K. How many (cm-3) In atoms are un-ionized (i.e., neutral)
The current through a coil having a resistance of 6 ohms and inductance of 2 H is 4 ampere. Calculate the instantaneous value of the current 50 ms after the supply is cut off.
Sketch and label each of the following signals
A line of charge with uniform density of 10 microC/m exists in air along z-axis between z=0 and z=10 cms . Find Electric Field Intensity on p1(0, .1, 0)
A coaxial cable connects a 50W transmitter to an antenna with a feed impedance of 200W. The operating frequency is 900MHz and the cable has a velocity factor of 0.66. Determine the characteristic impedance and length of the cable.
Silicon has an absorption co-efficient of 850 cm-1 at a wavelength of 805 nm. Light of intensity 1 W/m2 at this wavelength is directed at normal incidence onto a polished silicon wafer of thickness 0.5 mm.a. Assuming a top surface reflectance of 30..
I have a 3.6V battery, a shottky diode with a voltage drop of 0.22V, and an LED rated at 3V and 100mA. How much resistance will I need. Do i subtract battery voltage - LED voltage and divide by current desired
A uniform plane E field, polarized in the x direction travels in the negative y direction in dry earth (Er = 16, Mu(r) = 1) with a phase constant Beta = pi rad/m and an amplitude of 4.0 A/m. If this field has its maximum value at t = 0, y = 2
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