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A rowboat crosses a river with a velocity of 3.87 mi/h at an angle 62.5° north of westrelative to the water. The river is 0.700 mi wide and carries an eastward current of1.25 mi/h. How far upstream is the boat when it reaches theopposite shore?
An airplane is flying with a velocity of 87.0m/s at an angle of 20.0 degrees above the horizontal. How far from the dog will the suitcase land
Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 455 Hz. Determine the ambulance's speed from these observations.
Calculate the momentum of a 17m^3 of air (density of 1.3kg/m^3) hitting a sky diver traveling 52 m/s
If the boat driver wishes to land the boat at a dock on the other side of the river directly oppistie his starting position, Which direction should the boat driver point his boat
A magnifying lens with a focal length of 5 cm is held 4 cm from an object that is 1cm tall. Find the image distance from the lens
Two 10-cm-diameter charged rings face each other, 16.0 cm apart. What is the electric field strength at the center of the left ring
A spring, with a force constant 5.00x10^2 n/m, is horizontal with one end fixed to a wall and the other end free. How far will the block travel once the spring is released
An object whose rotational inertia is 100 kgm2 is subjected to a torque of 20 Nm. During this time, what is its rotational displacement
a solid cylinder rolls down an inclined plane without slipping. what is the angle of the incline to the horizontal
A particular wire has a resistivity of 2.7 ? 10-8 ·m and a cross-sectional area of 4.1 ? 10-6 m2. What length of wire is required
A rocket reaches Low Earth Orbit of 300km above ground in 6 minutes. Estimate average acceleration of the rocket. how long would it take it to reach the Moon
Two skaters, A and B, of equal mass are moving in clockwise uniform circular motion on the ice. Their motions have equal periods, but the radius of skater A's circle is half that of skater B's circle
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