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A long pipe of outer radius 3.50 cm and inner radius 2.98 cm carries a uniform charge density of 5.22 mC/m3. Using Gauss\'s law and assuming the pipe is adequately long to consider it infinitely long, compute the electric field r = 7.35 cm from the centreline of the pipe.
When light of wavelength 300 nm falls on a cobalt surface, electrons having a maximum kinetic energy of 0.24 eV are emitted. obtain the frequency corresponding to the cutoff wavelength
You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). Compute the outward flux through your body's back surface
find the coefficient of kinetic friction between skis and snow.Three equal point charges, each with charge 1.80 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.500 m. What is the electric potential energy U o..
A well with vertical sides and water at the bottom resonates at 7.00 Hz and at no lower frequency. How far down in the well is the water surface
Your friend has a pair of fuzzy dice with a mass of 1.19 gram hanging from his rear-view mirror, Find at what angle to the vertical will the tension in the string be twice the weight of the dice
the kinetic coefficient of friction for a 12 kg mass on a table is 0.25. a string from this mass goes across a pulley
A rock climber throws a small first aid kit to another climber who is higher up the mountain. What is the vertical height between the two climbers
A white dwarf star has surface temperature 20 kK. Where is the Wien peak in this star s blackbody curve
A 43.0 mA current is carried by a uniformly wound air-core solenoid with 425 turns, a 11.5 mm diameter, and 12.5 cm length. Compute the magnetic field inside the solenoid
A uniform ladder whose length is 5.0 m and whose weight is 400 N leans against a frictionless vertical wall. The coefficient of static friction among the level ground and the foot of the ladder is 0.37.
Assuming wind forces can be neglected, what is the highest that one can make a solid concrete tower of uniform cross-section (Take the density of concrete to be 2,400 kg/m^3)
A playground merry-go-round has radius 2.90m and moment of inertia 2500kg?m2 about a vertical axle through its center, and it turns with negligible friction. How much work did the child do on the merry-go-round
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