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An aluminum wire carrying a current of 4A has a cross-sectional area of 9e-06 m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.8g/cm3. (Assume three electrons are supplied by each atom.) Answer is in m/s.
In a physics lab experiment for the determination of moment of inertia, a team weighs an object and finds a mass of 2.98 kg. They then hang the object on a pivot located 0.163 m from the object\'s center of mass and set it swinging at a small ampl..
Determine the image distance for an object do=7.900 cm from a diverging lens of radius of curvature 6.320 cm and index of refraction 1.800.
A glass fiber with a thermal expansion coefficient of 5x10^6 C^-1, an elastic modulus of 72 GPa, Calculate the maximum flaw size that this fiber can tolerate
When a thin slab of semiconducting material is illuminated with monochromatic electromagnetic radiation, Determine the energy gap of the semiconductor
A satellite is in a circular orbit 1000 km above the Earth's surface; i.e., it moves on a circular path under the influence of nothing but the Earth's gravity. Find the time it takes to complete one orbit around the Earth
Air at 25 oC blows over a heated steel plate with its surface maintained at 200 oC. Calculate the heat loss per hour from the top surface of the plate
the magnitude j of the current density in a certain wire with a circular cross section of radius r 2.01 mm is given by
A wheel has eight spokes and a radius of 33.0 . It is mounted on a fixed axle and is spinning at 2.80 . You want to shoot a 38.0 long arrow through the wheel, parallel to this axle, without hitting any of the spokes. Assume that the arrow and the ..
A piano string with a length of 1.15-m and a mass of 20.0-g isunder a tension of 6.30×10^3 N. What are the frequencies of the next two harmonics
What is the magnitude of the centripetal acceleration.
The planet Neptune has a satellite, Proteus, which travels in an orbit 1.180*10^8 m with a period of 1.12 days. Calculate the mass of Neptune
If the x position of a particle is measured with an uncertainty of 1.00×10-10 m, then what is the uncertainty of the momentum in this direction
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