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 Kevin Lee
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Questions Asked

Grazes:
Group Title
Find the range of f(x)=(1/2) x^4 + 3x − 2
 updated 4 months ago
 1 reply
 No Medals Yet
Mathematics

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What is the center of a circle with points (4,5), (2,11), and (4,21).
 updated 7 months ago
 26 replies
 2 Medals
Mathematics

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Group Title
What is necessary for a cell to undergo mitosis?
 updated 7 months ago
 17 replies
 No Medals Yet
Mathematics

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What is the speed of an e in the n=4 Bohr orbit?
 updated 8 months ago
 14 replies
 2 Medals
Mathematics

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What is the Kinetic Energy of an electron in the n=4 Bohr orbit?
 updated 8 months ago
 8 replies
 1 Medal
Mathematics

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Find the inverse of the matrix:
 updated 8 months ago
 1 reply
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Mathematics

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A certain part if the electromagnetic spectrum ranges from 350nm to 820nm . What is the highest frequency associated with this portion of sp…
 updated 9 months ago
 17 replies
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Mathematics

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If the range of the functions y=f(x) is all real numbers between 1 and 12, inclusive, then what is the maximum value of g(x) if g(x)=2f(x1…
 updated 9 months ago
 20 replies
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Mathematics

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Group Title
A conducting bar moves along frictionless conducting rails connected to a 4ohm resistor. The length of the bar is 1.5m and a uniform magneti…
 updated 9 months ago
 59 replies
 3 Medals
Mathematics

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A conducting rod with a length of 20cm is placed on a U shaped metal wire that includes a light bulb with a resistance of 50ohms. A constant…
 updated 9 months ago
 11 replies
 2 Medals
Mathematics

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A bar magnet with its north pole pointing toward a coil of wire with a cross sectional area of .03m^2 and 7 turns is thrust into a coil. If …
 updated 9 months ago
 9 replies
 3 Medals
Mathematics

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Group Title
A conducting loops of wire has an area of 250 cm^2 and a resistance of 40 ohm. There is a magnetic field of 200T perpendicular to the loop. …
 updated 9 months ago
 18 replies
 1 Medal
Mathematics

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Group Title
A cube whose edges are .2m long has one corner at the origin of an xyz coordinate system. A magnetic field with a strength of .5T is applied…
 updated 9 months ago
 11 replies
 1 Medal
Mathematics

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Group Title
How do I cite a review that was published in a newspaper and then republished in a book? (MLA)
 updated 9 months ago
 11 replies
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Mathematics

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In the Energy–momentum relation, what does c stand for?
 updated 9 months ago
 2 replies
 1 Medal
Mathematics

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Group Title
A 5 uC charge is at the origin of an xy coordinate system. What is the potential difference between the points x=6m and y=4m because of this…
 updated 10 months ago
 2 replies
 1 Medal
Mathematics

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Group Title
Two point charges of magnitude 5 uC and 5uC are situated along the xaxis at x1=3m and x2=3m, respectively. What is the electric potential…
 updated 10 months ago
 12 replies
 1 Medal
Mathematics

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Group Title
Show that there is no triangle with a=2 b=3 and angle A=42 degrees
 updated 10 months ago
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Mathematics

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Find the number of fivedigit positive integers, n, that satisfy the following conditions:
(a) the number n is divisible by 5,
(b) the fir…
 updated 10 months ago
 1 reply
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Mathematics

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Group Title
Can someone translate the second page of this story? (page 6 in the pdf)
LINK:https://www.cathedralirish.org/file.cfm?resourceid=22684&fi…
 updated 11 months ago
 3 replies
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Mathematics

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A angle between line l and the line y3=(1/4)(x+2) measures 60 degrees. The line l contains the point (1,5). Find all possible equations of…
 updated 11 months ago
 24 replies
 2 Medals
Mathematics

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Group Title
The speed of surface waves in deep water is given by v=gT/2pi. What is the wave length of a wave that has a period of 5.00s?
 updated one year ago
 3 replies
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Mathematics

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The work done on a slingshot is 40 J to pull back a .1kg stone. If the slingshot projects the stone straight up in the air, what is the maxi…
 updated one year ago
 5 replies
 2 Medals
Mathematics

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Group Title
A 6kg block, sliding to the east across a horizontal frictionless surface with a momentum of 30 kg*m/s strikes an obstacle. The obstacle exe…
 updated one year ago
 3 replies
 1 Medal
Mathematics

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I'm trying to think of a phrase to substitute "slipped through the crowd" because my English teacher doesn't like it. Help?
 updated one year ago
 37 replies
 3 Medals
Mathematics

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A .1 kg object dropped vertically from a height of 1m above the floor bounces back to a height of .8m. What is the mechanical energy lost by…
 updated one year ago
 6 replies
 1 Medal
Mathematics

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Group Title
If the three roots of the polynomial x^3+3x^25x+1 are r1,r2,r3, find r1r2+r1r3+r2r3.
Can someone do this step by step so I understand it? …
 updated one year ago
 1 reply
 1 Medal
Mathematics

Grazes:
Group Title
Which of the following is not a solution to 2sin^2(x)+sinx?
330,210,180,150,0 (in degrees)
 updated one year ago
 3 replies
 1 Medal
Mathematics

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Group Title
If the four roots of the polynomial x^4+3x^2+2x^2+4x4 are r1,r2,r3,r4 then r1r2r3+r1r3r4+r1r2r4+r2r3r4=?
 updated one year ago
 1 reply
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Mathematics

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Image.
 updated one year ago
 17 replies
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Mathematics
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