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Question: The current flowing in a copper wire is 4.0 A. If the diameter of the wire (circular cross section) is 9.0 mm and the charge carrier density in copper is 8.47 x 1028 m-3, then determine the time needed for the current to travel 6.0 m along the wire.
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A parallel-plate capacitor is to be constructed by using, as a dielectric, rubber with a dielectric constant of 3.20, What is the minimum area the capacitor plates can have
A proton is shot at 5x10^7 m/s toward a gold atom, with a mass 197 times t hat of the proton and deflects it straight back with 80% of its initial speed. What is the recoil speed of the gold nucleus?
In a simple atom, the electrons making transitions between outermost energy levels and the innermost energy levels give rise to photons with the reddest colours.
The top plate is illuminated by monochromatic light of wavelength 544.1 nm. Determine number of dark parallel bands crossing the top plate (including the dark band at zero thickness along the edge of contact between the two plates).
While in outer space, a small however powerful, spherical shaped light source is turned on with us. The light source delivers 1.00 kW/m2 at1.00 cm from its center. There is a small particle of space dust at rest, 10.0 cm away from the center of the l..
a pot of hot water is boiling on your stove. the pot is in the shape of a round cylinder made of aluminum which is 10
A long jumper leaves the ground at an angle of 20.0o to the horizontal and at a speed of 11.0 m/s. How far does he jump
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An indoor running track is square-shaped with rounded corners; each corner has a radius of 5.30 m on its inside edge. What is the design speed on the innermost lane of the track if the banking angle is 11.0 degrees
a 100w ultraviolet light source of wavelength 200nm illuminates a magnesium surface 5m away. a the photoelectric work
A rotating wheel requires 6.00 s to rotate 30.0 revolutions, What is the constant angular acceleration (in rad/s) of the wheel
Three negative charges of equal magnitudes are positioned along the x-axis at x = -a, x=0, and x = +a respectively. How does the potential energy of the system of charges change as a result
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