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What is the basic difference between obtaining water from a water-table well and obtaining water from an artesian well? Describe three ways in which groundwater may become contaminated.
A 3.0 kg mass sliding on a frictionless surface explodes into three 1.0 kg masses. After the explosion the velocities of the three masses
A spring of stiffness 25 kN m-1 is compressed by an initial load of 5 kN, gradually applied, What is the total work done on the spring
A capacitor of capacitance Co is charged to a potential Vo and then isolated. A small capacitor C is then charged from Co, discharged & charged again, the process being repeated n times. The potential of the large capacitor has now fallen to V. Fin..
A 72.0 kg base runner begins his slideinto second base when he is moving at a speed of 4 m/s. The coefficient of friction between hisclothes and Earth is 0.70. He slides so that his speed is zero justas he reaches the base.
A 5.3 kg bundle starts up a 30°incline with 142 J of kinetic energy. How far will it slide up the plane if the coefficient of friction is0.30
a car moves at a constant speed on a strait but hilly road. One section has a crest and dip of the same 500 m diameter curve. what is the greatest speed at which the car can move without leaving the road at the top of the first crest
Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K. Find the entropy change of the gas
a 70 block of iron is removed from an 800furnace and immediately dropped into 200 of 20 water. what fraction of the
Calculate the maximum height to whichm1rises after the collision
A very massive object -almost innitely massive - moving with velocity v1 = 100m/s hits a very light object - "massless" - at rest. What is the final velocity of the very light object
An electric motor develops 65 kilowatts of power as it lifts a loaded elevator 17.5 m in 35 s. How much force does the motor exert?
Drawing on Eratoshthenes' method, if two observers are due north and south of each other and are separated by 400 km, what is circumference of their spherical world if they see the similar star on their meridian at altitudes of 23degrees and 47deg..
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