egenriether
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shr_101:
Group Title
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 one year ago
 1 reply
 No Medals Yet
Mathematics

please88:
Group Title
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 one year ago
 2 replies
 No Medals Yet
Mathematics

please88:
Group Title
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 one year ago
 4 replies
 1 Medal
Mathematics

mcole03:
Group Title
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 one year ago
 1 reply
 No Medals Yet
Mathematics

limonlemon:
Group Title
How to find the net force from a non uniform magnetic field?
 updated one year ago
 3 replies
 4 Medals
Mathematics

ihatephysicslol:
Group Title
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 one year ago
 77 replies
 2 Medals
Mathematics

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

bre13:
Group Title
Which force slows down an ice skater moving over the surface of an ice rink?
 updated one year ago
 5 replies
 2 Medals
Mathematics

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

lokita056:
Group Title
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 one year ago
 2 replies
 1 Medal
Mathematics

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

marie707:
Group Title
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:
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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:
Group Title
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:
Group Title
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:
Group Title
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
 No Medals Yet
Mathematics

sensam:
Group Title
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
 No Medals Yet
Mathematics

knight231:
Group Title
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
 No Medals Yet
Mathematics

carlvin:
Group Title
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
 No Medals Yet
Mathematics

susanc27:
Group Title
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:
Group Title
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:
Group Title
6p21=3p 12
Please HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

mathavraj:
Group Title
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:
Group Title
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:
Group Title
To Prove :
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

ketheredge:
Group Title
A battery is the power source for what type of current? HELPPPPP
 updated one year ago
 16 replies
 No Medals Yet
Mathematics

callsty:
Group Title
The way you view yourself overall is your ___________.
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

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

cherio12:
Group Title
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:
Group Title
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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