Mathematics Coordinate Geometry Level: Misc Level
Five of the vertices of a rectangular solid are points (-1,1,-5),(-1,1,2)(-1,3,2), (-13,-5), and (1,-1,-5). State the coordinates of the other three vertices
Mathematics Coordinate Geometry Level: Misc Level
five on the eight vertices of a cube are points ( -1,3,-2), (4,3,-2), (4,-2,-2),(-1,-2,-2), and (4,3,3). State the coordinates of the other three vertices.
Physics Current Electricity Level: Misc Level
An isolated 4.70 uF parallel -plate capacitor has 2.70 mC of charge. An external force changes the distance between the electrodes until the capcitance is 3.00 uF. How much work is done by the external force?
Physics Electrostatics Level: Misc Level
Metal sphere 1 has a positive charge of 6.00 nC. Metal sphere 2, which is twice the diameter of sphere 1, is initially uncharged. The spheres are then connected together by a long, thin metal wire. what are the final charges on each sphere?Sphere 1? Sphere 2)
Physics Current Electricity Level: Misc Level
A 3.00- cm diameter parallel- plate capacitor with a spacing of 0.300 mm is charged to 400 V. What is the total energy stored in the electric field? What is energy density?
Physics Electrostatics Level: Misc Level
The electric potential along the x-axis is V=100x2 V, where x. is in meters. What is Ex at x =0 m? What is Ex at X =1 m?
Physics Current Electricity Level: Misc Level
How much work does the charge do to move 2.10 uC of charge from the negative terminal to the positive terminal of a 2.50 V battery?
Physics Ray Optics Level: Misc Level
Calculate the index of refraction for a good antireflection coating for Sidetector (n=3.4)placed in air that will minimize the reflection from the deterctor surface.
Physics Wave Optics Level: Misc Level
The separation in linewidth . of a coarse WDM system is 2.5nm at a wavelength of 1550 nm.Derive the expression showing the relationship of the frequency bandwidth
to the linewidth
...What is the frequency separation
for this coarse WDM system?
Physics Wave Optics Level: Misc Level
Corning makes a dispersion compensating fiber. Explain how it would be used in long -haul optical fiber system.
Chemistry Physical Chemistry Level: Misc Level
Write the eaustions of Ca (OH)2 and describe why this is more soluble in acid than water
Chemistry Mole Concept Level: Misc Level
What is the molar solubility of PbBr2 in a 0.10. M solution of Pb (NO3)2 ?
Chemistry Physical Chemistry Level: Misc Level
The Ksp of PbBr2 is 8.9 x 10-6 At mass Pb 207 g: Br 80g
a) What is concentration of pb+2 in solution?
b) What is the concentration of Br-in solution?
c) What is the molar solubility of pbBr2 in water?
Chemistry Physical Chemistry Level: Misc Level
Write the equations for the following titrations. Using the choices (acidic, neutral, basic) describe the solutions after each titration
a) a strong acid with a strong base
b) a weak acid with a strong base
c) a weak base with a strong acid
Chemistry Physical Chemistry Level: Misc Level
Calculate the ration of conjugate base to acid in order to prepare a buffer with a p H of 10.
Ka for the acid is 4.2 x 10-7
