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In a science fiction story, a microscopic black hole is given an enormous positive charge by firing an un-neutralized ion drive exhaust (consisting of positively charged xenon ions) into it for six months. The idea behind the charging process is to be able to confine and manipulate this dangerous object with powerful electric fields. Suppose the charge on the black hole is 5740 C. At what distance from it is the electric potential equal to 1120 V?
Define leadership effectiveness. What does it mean to be an effective leader?
A rigid (constant volume) container holds 4.6 moles of an ideal gas initially at 190 K and 2.0 atm. How much gas is in the container at the final pressure and temperature
Assume that ω is the angular velocity of the pulley at the same time. What is the kinetic energy of the system consisting of both blocks and the pulley at that time?
Outline what you know about Plasmonics and what you know about Raman spectroscopy and surface enhanced Raman spectroscopy
A man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 35 cm from his face. The magnification of the image of his face is +0.13. What will be the image distance when he reverses the mirror (looking into..
A block of unknown mass is attached to a spring of force constant5.00 N/m and undergoes simple harmonicmotion and an amplitude of 10.0 cm. Determine the maximum acceleration of the block
A typical photovoltaic cell delivers 4.2×10-3 W of electric energy when illuminated with 0.12 W of light energy. What is the efficiency of the cell? An "energy bar" contains 27 g of carbohydrates. If the energy bar was his only fuel, how far could..
A certain dog whistle operates at 23.0 kHz while another (brand X) operates at an unknown frequency. estimate the operating frequency of brand X
how long one electron to travel the full length of the cable.
A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 1.8 meters long and 0.9 meters high. How far along the rough patch do the blocks go before stopping
The Youngs Modulus for copper is 130 Gpa. What is the strain in the the copper wire under a stress of 120Mpa
An unstable Pu-240 nucleus (mass 240.002 u) is at rest when it fissions into two Ag-120 nuclei (mass 119.893 u) which then fly off far from each other. Find the final kinetic energy of one Ag-120 nucleus
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