dave444
 Name:
 David Langs
 School:
 University of South Carolina
 About:
 My degree is in physics, and my interests are in math and physics.
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Questions Answered

joshuanoble2000:
Find a function whose derivative is 3x^2(x^3 + 2)^12
 updated 2 years ago
 36 replies
 2 Medals
Mathematics

nisa:
a ball is thrown straight up in the air as the ball rises does itz velocity increase decrease or remain the same? does its accelaration incr…
 updated 2 years ago
 5 replies
 2 Medals
Mathematics

gvetrichezhian:
Instead of OR Gate, why should not use the XOR Gate in the Full Adder circuit in order to add the output Carry of the two Half Adders?
 updated 2 years ago
 4 replies
 No Medals Yet
Mathematics

gwynne8188:
a gardener has 46ft of fencing to be used to enclose a rectangular garden that has a border 2 feet wide surrounding it. if the length of the…
 updated 2 years ago
 32 replies
 1 Medal
Mathematics

allyfranken:
find the set of points where the function is continuous:
f(x,y) = (xy)/(1+x^2 + y^2)
 updated 2 years ago
 5 replies
 2 Medals
Mathematics

Z11:
Find a nonzero, twobytwo matrix such that:
[6, 5] x [__, __] = [0, 0]
[24, 20] [__, __] [0, 0]
…
 updated 2 years ago
 2 replies
 3 Medals
Mathematics

allyfranken:
find the first partial derivative:
f(x, y) = y^5 3xy
…
 updated 2 years ago
 6 replies
 3 Medals
Mathematics

c0c0pIe:
A 200 g particle gains a momentum of 25 Ns in 12 s starting from rest. Find the
kinetic energy of the particle and the applied force.
 updated 2 years ago
 1 reply
 2 Medals
Mathematics

gwynne8188:
trent can deliver his newspapers in 30 minutes. it takes lois 20 minutes to do the same route. how long would it take them to deliver the n…
 updated 2 years ago
 6 replies
 2 Medals
Mathematics

superbenman222:
can anyone quickly explain to me the theory of relativity and 3rd dimension space bend and time curvature?
 updated 2 years ago
 4 replies
 2 Medals
Mathematics

Brent0423:
A cart of mass mA = 5.9 kg is pushed forward
by a horizontal force F. A block of mass
mB = 0.9 kg is in turn pushed forward by the
…
 updated 2 years ago
 5 replies
 1 Medal
Mathematics

nancyd:
A stream’s discharge _____.
 updated 2 years ago
 2 replies
 No Medals Yet
Mathematics

shubham:
http://en.wikipedia.org/wiki/Linear_particle_accelerator
Why do we need drift tubes, we could have accelarated particles by just subjecting…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

Awstinf:
At the bow of a ship on a stormy sea, a crewman conducts an experiment by standing on a bathroom scale. In calm waters, the scale reads 182l…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

badreferences:
Here's a painful mix of real analysis and caluclus ;D
Does the following series converge or diverge?
…
 updated 2 years ago
 16 replies
 4 Medals
Mathematics