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A length of metal wire has a radius of 5. x 10^-3 m and a resistance of 0.1. When the potential difference across the wire is 11V, the electrond drift speed is found to be 3.17 x 10^-4. On the basis of these data, calculate the density of free electrons in the wire.
A laser with wavelength d/8 is shining light on a double slit with slit separation 0.3 {rm mm}. This results in an interference pattern on the screen a distance L away from the slits. We wish to shine a second laser, with a different wavelength, t..
A circuit contains a resistor in series with a capacitor, the series combination being connected across the terminals of a battery. The time constant for charging the capacitor is 5.6 s when the resistor has a resistance of 2.0 x 104 ? What would ..
The acceleration due to gravity on the Moon is about one-sixth what it is on Earth. how many times higher will it go than it would on Earth
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 15.0 , giving it a charge of -12.0. Find the electric field just outside the paint layer
A child's sled has rails that slide with little friction across the snow. Logan has an old wooden sled with heavy iron rails that has a mass of 8.0kg quite a bit for a 28kg child! Logan runs at 4.0m/s and leaps onto the stationary sled and holds o..
The air pressure inside the tube of a car tire is 431 kPa at a temperature of 14.5 °C. What is the air pressure inside the tube
you drop a stone into a deep well and hear it hit the bottom 1.60 s later. this is the time it takes for the stone to
an entertainer juggles balls while doing other activities. in one act she throws a ball vertically upward and while it
A light bulb is connected to a 120 V wall socket. The current in the bulb depends on the time t according to the relation I = (1.414 A) sin[ (125.6 Hz) t ]. What is the average power delivered to the light bulb
How many kilograms of water at 100 degrees Celsius can be converted to steam by the addition of 1.13X10^7 joules of thermal energy.
A down jacket has a surface area of 0.87 m2 and is filled with a 4.4 cm thick layer of down, At what rate is heat conducted through the coat
A cylindrical storage tank has a radius of 1.34 m. When filled to a height of 3.74 m, What is the density of the solvent
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