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In 1911 Rutherford discovered the nucleus of an atom by observing the scattering of helium nuclei from gold nuclei. If a heliumnucleus with a mass of 6.68 x 10-27 kg, a charge of +2e,and an initial velocity of 1.50 x 107 m/s is projectedhead-on towards a gold nucleus with a charge of +79e, how closewill the helium atom come to the gold nucleus before it stops andturns around?(Assume the gold nucleus is held in place by other gold atomsand does not move).
The average speed of a nitrogen molecule in air is about 6.70 ? 102 m/s, and its mass is about 4.68 ? 10-26 kg, What average force does the molecule exert on the wall
Two rubber bands cause an object to accelerate with acceleration a. How many rubber bands are needed to cause an object with half the mass to accelerate five times as quickly
A freight car with a mass of 2500 kg rolls down an inclined track through a vertical distance of 1.5m. at bottom of the incline, on a level track, the car collides and couples with the identical freight car that was at rest. What percentage of th..
An aircraft uses a rocket-assisted takeoff unit (RATO) that is capable of discharging 47.0 kg of gas in 10.0 s with an exhaust velocity of 1100 m/s. What is the thrust developed by the rocket
A step-up transformer has 20 turns on the primary coil and 720 turns on the secondary coil. what input current and voltage are needed
A light beam is traveling through an unknown substance. When it exits that substance and goes into air, the angle of reflection is 32.0°, What is the index of refraction of the substance
A particle whose mass is 2 kg moves in the xy plane with a constant speed of 3 m/s in the x-direction along the line y = 5. What is its angular momentum (in kg m2/s) relative to the origin
A mass is attached to a vertical spring, which then goes into oscillation. At the high point of the oscillation, What is the period of oscillation
A wire of length L = 15 is bent into a semi circle . If the total charge on the wire is -45nC, determine the electric field at the center point of the semicirlce.
A hot-air balloon has just lifted off and is rising at the constant rate of 2.2 m/s. how high is she when the camera reaches her
While a person is walking, his arms (with typical lengths 70 cm measured from the shoulder joint) swing through approximately a 45 degree angle in 0.5 sec. What force would the blood vessel exert
Determine and explain the ways a corporation can use advanced Excel tools such as MIN and MAX statement, conditional formatting, and additional tools that have found to manage their business finances.
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