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An electron is fired directly toward the center of a large metal plate that has excess negative charge with surface charge density 2.00×10-6 C/ m2. If the initial kinetic energy of the electron is 50 eV and if the electron is to stop (owing to electronstatic repulsion from the plate) just as it reaches the plate, how far from the plate must it be fired?
The three principal visible spectral lines from hydrogen have wavelengths 434 nm, 486 nm, and 656 nm. Find the angular position of the third spectral line in hydrogen
a double-slit arrangment prduce bright interference fringrs that are seprated by 2.60 mm when the wavelengt is 589nm. what is the bright fringe separation
How far from the point of the drop will the rock hit the ground.
A particular organ pipe can resonate at 231 Hz, 385 Hz, and 539 Hz, but not at any other frequencies in between. Is it an open or a closed pipe? What is the fundamental frequency of this pipe.
Three sheets of plastic have unknown indices of refraction. Sheet 1 is placed on top of sheet 2, what is the expected angle of refraction in sheet 3
A generator connected to an RLC circuit has an rms voltage of 130V and an rms current of 33mA, what is the inductive reactance of the circuit
A spring is hung from the ceiling. A 0.509 -kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
In the circuit shown in the figure, the capacitors are all initially uncharged and the battery has no appreciable internal resistance. find the maximum potential difference across each capacitor
An object of mass m= 1.00 kg is moving initially with a speed of 2.0 m/s along positive x- direction, Determine the speed and direction of motion of second object
what is its kinetic energy at the end of the interval. How high a tree would a 80 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.
At this time it has reached a height of 420 metres above launch pad and attained an upward velocity of 50 ms-1. From this time on, the rocket has constant upward acceleration -10 ms-2 (due to the effect of gravity alone).
One mole of an ideal diatomic gas is expanded at constant temperature from a pressure of two atmospheres, What are the final temperature and pressure of the gas
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