Determine the equation of the ellipse with an eccentricity
Given the coordinates of one focus as (4,2) and the equation of one directrix as y=4, determine:
The equation of the ellipse with an eccentricity of ½. The equation of the hyperbola with an eccentricity of 2. Graph both equations on an axes
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Fencing for the north and south sides costs $9 per foot and fencing for the other two sides costs $6 per foot. What is the maximum area that can be enclosed for $5400?
An important component of blood is the buffer combination of bicarbonate ion and carbonic acid. Consider blood with a pH of7.42.
A concave mirror has a focal length of 34.1 cm. The distance between an object and its image is 52.8 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the center of curvature.
Calculate the number of moles of Cl atoms in1.20×1024 formula units of magnesium chloride,MgCl2. Express your answer numerically in moles Cl.
Given the coordinates of one focus as (4,2) and the equation of one directrix as y=4, determine the equation of the ellipse with an eccentricity of ½.
What mass of ammonium chloride should be added to 2.55 L of a 0.155 M NH3 in order to obtain a buffer with a pH of 9.55?
Two long parallel wires 5.50 cm apart carry 15.5 A currents in the same direction. Determine the magnetic field strength at a point 12.0 cm from one wire and 13.2 cm from the other.
A solution is made by mixing 200 mL of 5.9x10(-4)M CuCl with 150 mL of 4.3x10(-3)M NaBr. Will a CuBr precipitate form? (K(sp)=4.2x10(-8)
A spring with a mass on the end of it hangs in equilibrium a distance of 0.4200 m above the floor. The mass is pulled down a distance 0.0600m below the original position, released, and allowed to oscillate. How high above the floor is the mass at
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