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Two small metallic spheres, each of mass m = 0.212 g, are suspended as pendulums with light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.1 nC, and they come to equilibrium when each string is at an angle of = 5.15° with the vertical. How long are the strings?
Consider a 2.4 kg object sliding along a horizontal frictionless surface at 5.2 m/s. Find initial and final elastic potential energies
The density of ice is 917 kg/m^3, and the density of sea water is 1025 kg/m^3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.2m^3. What is the weight of the heaviest bear that the ice can support without sinking com..
drops of rain fall perpendicular to the roof of a parked car during a rainstorm. the drops strike the roof with a speed
a spacecraft drifts through space at a constant velocity. it then turns on a jet that provides a constant force in the
The amplitude of the voltage across an inductor can be greater than the amplitude of the generator emf in an RLC circuit. Consider an RLC circuit with Epeak = 50 V, R = 14, L = 1.05 H, and C = 1.12 µ F. Find out the amplitude of the voltage across th..
how fast is the mass moving when leaves the spring. What is her velocity relative to the ice surface.
The patient is wheeled through the emergency room entrance 19 m east down a hall to an elevator, -9 m down an elevator, How far is the emergency room entrance from the operation room
A block with mass m = 16.0 kg rests on a frictionless table, What distance does the spring need to be compressed so that the block will just barely make it past the rough patch when released
A toy train rolls around a horizontal 1.5-m-diameter track.The coefficient of rolling friction is 0.15. What is the magnitude of the train's angularacceleration after it is released in rad/s2?
An explosion breaks an object originally at rest into two fragments. One fragment acquires twice the kinetic energy of the other. What is the ratio of their masses
an electric dipole has charges of 4.55pc that are separated by 6.75cm . the dipole lies on the x-axis its positive end
Suppose that you want to take a photograph of yourself as youlook at your image in a flat mirror 2.5 m away. For what distance should the camera lens be focused
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