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In the Millikan oil-drop experiment, an atomizer (a sprayer with afine nozzle) is used to introduce many tiny droplets of oil betweentwo oppositely charged parallel metal plates. Some of the dropletspick up one or more excess electrons. The charge on the plates isadjusted so that the electric force on the excess electrons exactlybalances the weight of the droplet. The idea is to look for adroplet that has the smallest electric force and assume that it hasonly one excess electron. This strategy lets the observer measurethe charge on the electron. Suppose we are using an electric fieldof 7.0 104 N/C. The charge on one electron isabout 1.6 10-19 C. Estimate the radius of an oil drop of density 839 kg/m3 for whichits weight could be balanced by the electric force of this field on one electron.
Determine the inductance of a solenoid with 650 turns in a length of 20cm . The circular cross section of the solenoid has a radius of 4.1cm
A bat at rest sends out ultrasonic sound waves at 53.5kHz and receives them returned from an object moving directly away from it, What is the received sound frequency
Ice at -14.9 °C and steam at 115 °C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 52.0 °C is present.
A soccer player kicks a rock horizontally off a 34.0-m-high cliff into a pool of water. what was the initial speed given to the rock
A 6,400-kg truck runs into the rear of a 1,000-kg car that was stationary. What was the speed of the truck before the collision
An electric field of intensity 3.4 kN/C is applied along the x-axis. compute the electric flux through a rectangular plane 0.350 m wide and 0.700 m long if the following conditions are true.
A particle of mass 2.4x10^-5kg and charge 3.0x10^-6C is accelerated from rest in a uniform electric field of 180 N/C. Find its acceleration in the electric field
A 1.50 kg box (position is given in meters and time is given in seconds) slides on ice for 1.5 seconds and then encounters a rough surface. Find out the momentum at the start of the animation. Is momentum conserved during the first 1.5 seconds? Is..
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
Two charged Ping-Pong balls separated by the distance of 1.62 m exert an electric force of 0.0234N on each other. What will be the force if the objects are brought closer, to a separation of only 31.4 cm.
What lengths of ship three sides according to the observer
An advertisement shows a 1239 kg car slowly pulling at constant speed a large passenger airplane to demonstrate the power of its newly-designed 89.7-hp (horsepower) engine, Calculate the force that opposes the motion
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