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Four identical charges (+1.6 μC each) are brought from infinity and fixed to a straight line. Each charge is 0.32 m fromthe next. Determine the electric potential energy of this group.
At a dock, a crane lifts a 1200 kg container 30 m, swings it out over the deck of a frieghter, and lowers the container into the hold of the freighter, which is 10 m below the level of the dock. The acceleration of gravity is 9.8 m/s2. Neglect fri..
If his arms are capable of exerting a force of 1400 on the vine, what is the maximum speed he can tolerate at the lowest point of his swing? His mass is 82, and the vine is 6.00 long.
A spring stretches by 0.0241 m when a 4.15-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 4.44 Hz
An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is 2.0 * 10^5 m/s, What are the components of the momentum of the electron
four charges are placed at the corners of a square of side 4 cm. What is the electrostatic potential energy of this system relative to infinity
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
The highest theoretical efficiency of a gasoline engine, based on the Carnot cycle, is 0.300 or 30.0%. If the heat engine absorbs 812 J of energy from the hot reservoir during each cycle, how much work can it perform in each cycle
Find a Compact Disk. find a white light source and see if you can convince yourself that you are looking at the reflection of the light source as seen in the first order m = 1 maxima, estimate the spacing between the tracks of a CD
A copper bar of thermal conductivity 401 W/(m · K) has one end at 108° C and the other end at 18° C. What is the rate of heat conduction along the bar
q1. a roller-coaster track has six semicircular dips with different radii of curvature. the similar roller-coaster cart
Consider a system of three noninteracting identical bosons that move in a common external one dimensional harmonic oscillator potential. Find the energy levels and wave functions of the ground state, first excited state, and second excited state of t..
A uniform magnetic field B is confined to the square region with side of length 2L.
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