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Jerome and Paul are competitive brothers. They live on a small farm on the northern bank a river that runs purely east and west and that flows to the East at a rate of VR.
The brothers like to visit their Uncle Leo who lives on the southern bank of the river. The river is wideat this point, of known width , and their uncle's dock is a known distance to the east of the pointwhich is directly across the river from the brothers' house. Paul is not nearly as strong a paddler as isJerome, but paddling together they can maintain a known paddling speed in the farm pond. Jeromeknows that if they point their canoe due south, they will always end up to the east of Uncle Leo's dockby the time they have paddled across the river. He wants to know in which direction they should head to arrive exactly at Uncle Leo's dock without any wasted effort.
A well-insulated electric water heater warms 111 kg of water from 20.0° C to 43.0° C in 29.0 min. Find the resistance of its heating element
An electron is traveling to the right in the plane of the paper and a uniform magnetic field are directed into the plane. Obtain what direction will the particle be deflected
A person is performing a knee extension exercise with a 100 N weight acting at the ankle. What is the torque at the knee necessary to maintain a knee joint angle of -60q relative to the right horizontal passing through the knee joint
A 45-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 25 degrees , At what angle does the crate begin to slide
Calculate the magnitude of the force between two point charges of +1.6 x 10-19 C and -1.6 x 10-19 C, for a range of distances, from r = 0.090 nm to r = 0.18 nm in 0.010 nm steps.
Academic sample surveys, unlike commercial polls, often discuss nonresponse. A survey of drivers began by randomly sampling all listed residential telephone numbers in the United States. Of 45,956 calls to these numbers, 5029 were completed.
A baseball approaches home plate at a speed of 41.0 m/s, moving horizontally just before being hit by a bat. The batter hits a pop-up such that after hitting the bat, the baseball is moving at 50.0 m/s straight up. The ball has a mass of 145 g and is..
A singly charged ion of 7Li (an isotope of lithium) has a mass of 1.16×10?26kg, What is the radius of the ion's path in the magnetic field
A narrow beam of light from a laser travels through air (n = 1.00) and strikes the surface of the water (n = 1.33) in a lake at point A. If refraction did not occur, how far away from point B would the laser beam strike the lake bottom
Give the general formula for an amine. Name the characteristic group it contains. What property makes the simple amines unpopular? Give the general formula for a carboxylic acid. Name the characteristic group it contains
A white dwarf star has surface temperature 20 kK. Where is the Wien peak in this star s blackbody curve
The proper length of one spaceship is 2.8 times that of another. The two spaceships are travelling in the same direction and, while both are passing overhead, an Earth observer measures the two spaceships to be the same length.
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