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A rock is thrown vertically upward with a speed of 14.0m/s from the roof of a building that is 50.0 m above the ground. Assume free fall.
A) In how many seconds after being thrown does the rock strike the ground?B) What is the speed of the rock just before it strikes the ground?
A dipole is formed by point charges +3.8 micro Coulomb and -3.8 micro Coulomb placed on the axis at (0.45 m, 0) and (-0.45m, 0), respectively. At what positions on the axis does the potential have the value 7.7×105 V?
In a skating stunt known as "crack-the-whip," a number of skaters hold hands and form a straight line. find the magnitude of the centripetal force that acts on him
A hall sensor made from silicon is 0.40 nm thick and has a charge carrier density of 2.0 x 10 ^19 m^-3. What is the value of the magnetic field
A horizontal wire of 0.52 m carrying a current of 8.2 A is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
Use gauss law to find the electric field in the space surrounding an infinite line of the charge with a uniform charge density
Given a wave produced by a simple harmonic oscillator whose displacement in meters is given by the equation [y = 0.3cos(36?t)]
The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. Calculate the energy stored in the capacitor
q1. potassium iodide has an interplanar spacing of d 0.296 nm. a monochromatic x-ray beam shows first-order
Much of the material making up Saturn's rings is in the form of tiny dust grains having radii on the order of 10-6 m. These grains are located in a region containing a dilute ionized gas, and they pick up excess electrons. As an approximation, sup..
If a 4 cm piece of insulation is added to the pine ceiling kpine = 0.120 J/msC kinsul = 0.042 J/msC If a 4 cm piece of insulation is added to the pine ceiling , find the interface temperature for the pine and insulation.
A block is at rest on a plank whose angle can be varied. The angle is gradually increased from 0 deg. find the kinetic coefficent of friction between the block and the plank
A vinyl record (disk) starts from rest and then rotates about its central axis reaching playing speed of 33 1/3 rmp in 2.5 seconds. calculate the total angular displaement
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