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Positive charge Q is distributed uniformly along a thin plastic rod that forms one quarter of a circle in the third quadrant of the x-y plane. The circle has radius a and its center is at the origin.
1. What is the x-component of the resulting electric field at the origin? Express your answer in terms of the variables Q, a and appropriate constants.
2. What is the y-component of the resulting electric field at the origin? Express your answer in terms of the variables Q, a and appropriate constants.
A convex mirror has a focal length of -34.0 cm. A 15.0-cm-tall object is located 34.0 cm in front of this mirror. Determine the location and size of the image
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
A 10-kg object is dropped from rest. After falling a distance of 50 m, it has a speed of 26 m/s. How much work is done by the dissipative (air) resistive force on the object through this descent?
The electron in a hydrogen atom is in the first excited state, What is the quantum number n of the state into which the electron moves
At what height above the earth is the acceleration due to gravity 45% of its value at the surface, What is the speed of a satellite orbiting at that height
A flask is filled with 1.51 L (L = liter) of a liquid at 96.8 °C. When the liquid is cooled to 17.5 °C, What is the coefficient of volume expansion of the liquid
Consider an electron in the ground state of the hydrogen atom, separated from the proton by a distance of 0.0529 nm. Viewing the electron as a satellite orbiting the proton in the electrostatic potential, calculate the speed of the electron in its ..
A 1200 N uniform boom is supported by a cable perpendicular to the boom, as in Figure P8.28. The boom is hinged at the bottom, and a 2000 N weight hangs from its top. Find out the tension in the supporting cable and the components of the reaction ..
The pressure gauge on a tank registers the gauge pressure, Determine the mass of oxygen that has been withdrawn from the tank when the pressure reading is 22.4 atm
A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.602 and the coefficient of kinetic friction is 0.327. How much force is needed to begin moving the book
A small loop of wire of radius a lies a distance d from the center of a large loop of radius b. Suppose current I flows in the small loop. Find the flux through the big loop
A hollow conducting sphere has an inner radius of r1 = 0.19 m and an outer radius of r2 = 0.35 m, What is the field E in N/C 1 m from the sphere's outer surface
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