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An electric dipole attached to a massless rod of length b is placed in a uniform electric field E. Find the natural frequency of oscillation if the dipole is slightly rotated from its equilibrium position and released. If a damping torque proportional to angular veloicty of the dipole is present, determine the frequency of oscillation.
I have a cube of charge 1 cm on a side. The total charge is 1 coulomb. Using gauss's law, calculate the electric field due to the charge a kilometer away
An air-gap parallel-plate capacitor that has a plate area of 1.80 m2 and a separation of 2.80 mm is charged to 80 V. What is the electric energy density between the plates
A lightbulb has a resistance of 230?when operating with a potential difference of 180V across it. What is the current in the lightbulb?
A +44 nC charge is placed on the z- axis at (0,0,5 cm). A grounded conducting plane fills the x-y plane where z=0. A) Find the surface charge charge density on the conducting plane at the origin.
A tennis player swings her 1000 g racket with a speed of 15.0m/s . She hits a 60 g tennis ball that was approaching her at a speed of 15.0m/s. compute the average force that the racket exerts on the ball
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
As an electron moves through a region of space, its speed decreases from 6.40 106 m/s to 2.20 106 m/s. Did the electron move to a higher potential or a lower potential
A ping-pong ball has an average density of 0.0840 g/cm3 and a diameter of 3.80 cm. What force would be required to keep the ball completely submerged under water
Light from a helium-neon laser (lamda=633nm) is incident on a single slit. What is the largest slit width
A cup with mass 4.1 kg has been sitting in a room with a temperature of 23 oC for a long time. Calculate the specific heat of the cup
A sled of mass m is being pulled by a constant horizontal force of magnitude F. The coefficient of kinetic friction is Uk. find the power average created by force
The range of human hearing extends from approximately 20 Hz to 20000 Hz. Find out the wavelengths of these extremes while speed of sound in air is equal to 348 m/s.
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