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A spark occurs at the tip of a metal needle if the electric field strength exceeds 5.00×106 N/C , the field strength at which air breaks down. what is the minimum surface charge density for producing a spark?
An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is 2.30 10-28 kg, what is the speed of the heavier fragment
The speed of a bobsled is increasing because it has an accelerationof 2.4m/s^2. At a given instant in time, the forces resistingthe motion, including kinetic friction and air resistance, total450 N. The mass of the bobsled and its riders is 270kg. Wh..
The drawing shows a rectangular block of glass (n = 1.52) surrounded by a liquid with n = 1.58. At what angle does the ray leave the glass at point B
a closed and elevated vertical cylindrical tank with diameter 1.70 m contains water to a depth of 0.800 m . a worker
When a certain element is bombarded with high-energy electrons, Determine the atomic number Z of the element.
A thin uniform 15 kg post, 1.75 m long is held vertically using a cable and is attached to a 5kg mass and a pivot at its bottom end. Find the angular acceleration of the post about the pivot just after the cable breaks
You are asked to design a parallel-plate capacitor having a capacitance of 1 F and a plate separation of 1.00 mm. compute the required surface area of each plate. Is this a realistic size for a capacitor.
A spherical surface completely surrounds a collection of charges. Find the electric flux (with its sign) through the surface
A series RLC circuit has R = 75 %u03A9, L= 20 mH, and a resonance frequency of 4.0 kHz. What is the impedance of the circuit at resonance
The temperature difference between the inside and the outside of a home on a cold winter day is 49°F. Express this difference on the Celsius scale.
A flat puck with mass M=.10kg is rotated in a circle with radius R=.20 m on a frictionless air-hockey tabletop at constant speed. then what is the weight G=mg of the dangling block
A series combination of a 11 k resistor and an unknown capacitor is connected toa 11 V battery. One secondafter the circuit is completed, the voltage across the capacitoris 8 V. Determine thecapacitance of the capacitor.
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