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A 52.0 kilogram person jumps from rest off a14.0 meter high tower straight down into the water. Ignore air resistance during the descent. She comes to rest 3.00 meter under the surface of the water. Find the magnitude of average force that water exerts on the diver. This force is non conservative.
an engine performs a total of 15000 j of work in one minute: what is its power output in kilowatts and in horsepower
A box of weight Fg=2N accelerates down a rough plane that isinclined at an angle %u03C6=30 degrees above the horizontal, What is the work Wgrav done on the box by gravity
An iron casting containing a number of cavities weighs 20052.8 N in air and 16121.0 N in water. What is the total volume of all the cavities in the casting
William Tell is shooting at an apple that hangs on a tree. The apple is a horizontal distance of 20.0 m away and at a height of 4.00 m above the ground. what is the arrow's initial velocity
In compressing the spring in a toy dart gun , 0.5 J of work isdone. When the gun is fired, the spring gives its potential energyto a dart with mass of .02 kg. What is the dart's kinetic energy as it leaves the gun
a compare the energy needed for the first reaction of the carbon cycle that for a deuterium tritium reaction.b the
A projectile is launched from a high plateau so that it just clears a cliff's edge and falls to the valley floor below. How far from the cliff's edge was the projectile launched
Dorothy is up on her 14.0m by 18.0m roof enjoying the view of Kansas. Suddenly, a strong wind blows down her ladder, leaving her stranded. Calculate the force on the roof
a point charge 6.0uc is placed at the origin and a second charge -3.8uc is placed in the x-y plane at 0.35m 0.55m .
Illustrate what are the possible weaknesses in the Kimberely Process? Illustrate what role do you think the three sectors will have in addressing these weaknesses?
A hard-boiled egg of mass 52.0 moves on the end of a spring with force constant 24.8, Calculate the magnitude of the damping constant b
Lens L1 has a focal length of 15.o cm and is located afixed distance in front of the film plane of a camera. Lens L2 has a focal length of 13.0 cm, and its distance dfrom the film plane can be varied from 5.00 cm to 10.0 cm.
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