egenriether
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 University of South Carolina
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Questions Answered

shr_101:
In the photoelectric effect why do photon takes out any one electron when it strikes the metal?If electron can be emitted by striking the li…
 updated 9 months ago
 1 reply
 No Medals Yet
Mathematics

please88:
You are mowing your grass with an AC powered electric lawn mower. As you move to taller grass the lawn mower blade slows down. What happens …
 updated 9 months ago
 2 replies
 No Medals Yet
Mathematics

please88:
A resistor and an inductor are connected in series to a battery. The battery is suddenly removed from the circuit. The time constant for of …
 updated 9 months ago
 4 replies
 1 Medal
Mathematics

mcole03:
In your own words, explain why the direction along which the electromagnetic wave travels is not the same as the direction along which the c…
 updated 9 months ago
 1 reply
 No Medals Yet
Mathematics

limonlemon:
How to find the net force from a non uniform magnetic field?
 updated 9 months ago
 3 replies
 4 Medals
Mathematics

ihatephysicslol:
At a certain point between Earth and the Moon, the net gravitational force exerted on an object by Earth and the Moon is zero. The EarthMoo…
 updated 9 months ago
 77 replies
 2 Medals
Mathematics

SeriousMachining:
Electricity question: Grounding  12 volts DC  Two circuits share a common ground which is "poor" (rusty, loose, etc.). One circuit is h…
 updated 9 months ago
 2 replies
 3 Medals
Mathematics

bre13:
Which force slows down an ice skater moving over the surface of an ice rink?
 updated 9 months ago
 5 replies
 2 Medals
Mathematics

Arcturas:
Relativistic energy is sometimes derived in the following manner and I'm having trouble deciphering one mathematical step. So it goes like …
 updated 9 months ago
 9 replies
 2 Medals
Mathematics

lokita056:
A large mass collides with a stationary, smaller mass. How will the masses behave if the collision is inelastic
they will collide and the…
 updated 10 months ago
 2 replies
 1 Medal
Mathematics

panda_lorye:
What is a necessary condition for total internal reflection
in a medium?
 updated one year ago
 2 replies
 1 Medal
Mathematics

marie707:
a 2 kg ball is dropped from a height of 20m. what is its kinectic energy when it is 16m off the ground?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

twitter:
https://dl.dropbox.com/u/63664351/Physics/ELEC1.PNG
Figure above shows a very long horizontal wire PQ carrying a current of 100 A flowing i…
 updated one year ago
 12 replies
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Mathematics

brenishe:
A bomb explodes into three pieces. If the bomb was initally at rest, what could you say about the final momentum of the pieces?
 updated one year ago
 2 replies
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Mathematics

pdboy1995:
A train goes up a hill with a 15º incline. If the train has constant speed of 22 m/s, what are the vertical and horizontal components of the…
 updated one year ago
 1 reply
 1 Medal
Mathematics

megen505:
vt^2+vi^2+2(3.07)
how would i solve that.. the regular equation is vt^2+vi^2+2ad but my average would take over the ad. I just don't know…
 updated one year ago
 2 replies
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Mathematics

sensam:
A cart is moving horizontally along a straight line with constant speed of 30 m/s. A projectile is fired from the moving cart in such a way …
 updated one year ago
 2 replies
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Mathematics

knight231:
A ball of clay sinks when placed in water. The same piece of clay floats if it is made into the shape of a boat.
Why does the clay float…
 updated one year ago
 2 replies
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Mathematics

carlvin:
what is a equation that relates universal gravitational constant to the accleration of free fall at the surface of the earth
 updated one year ago
 3 replies
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Mathematics

susanc27:
Is the atomic nucleus always on the verge of splitting apart because the protons and neutrons naturally repel each other?
 updated one year ago
 2 replies
 1 Medal
Mathematics

dmuniz83:
A race car completes the final lap of a race on a 2kilometer circular track. At the start of the lap, it crosses the line at 60 meters/seco…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

Aquilla:
6p21=3p 12
Please HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 updated one year ago
 5 replies
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Mathematics

mathavraj:
till yesterday i believed that the universe was finite and boundaryless but recent studies on cosmic microwave bg shows that our universe i…
 updated one year ago
 9 replies
 1 Medal
Mathematics

nkamran:
I have a question...
the expression for de brogle wavelength of anything is found by intermixing E=pc and E=hv, that tells that the mass of…
 updated one year ago
 15 replies
 5 Medals
Mathematics

soty2013:
To Prove :
 updated one year ago
 2 replies
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Mathematics

ketheredge:
A battery is the power source for what type of current? HELPPPPP
 updated one year ago
 16 replies
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Mathematics

callsty:
The way you view yourself overall is your ___________.
 updated one year ago
 2 replies
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Mathematics

oktaviani:
Evaluate both sides of the Stokes theorem for the field:
H = 6xy ax + 3y2 ay
…
 updated 9 months ago
 2 replies
 1 Medal
Mathematics

cherio12:
If i have a wire that has current flowing some direction and i enter it into an magnetic field, how do i know that it reverses direction? It…
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

CaroGF:
What is the total power incident on a 1 m wide solar cell running from the north pole to the south pole on September 22, 2012 (the autumnal …
 updated one year ago
 3 replies
 1 Medal
Mathematics
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