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A canoeist paddles north across a river at 3.0 m/s. The river is flowing east at 4.0 m/s and is 150 m wide. (a) What is the velocity of the canoe relative to the river? (b) Calculate the time required to cross the river. (c) How far downstream does she land?
A bird stands on a dc electric transmission line carrying 3200A. What is the potential difference between the bird's feet
The frequencies of the spectral lines in light from a distant galaxy are found to be two-thirds as great as those of the same lines in light from nearby stars. Find the recession speed of the distant galaxy
One component of a magnetic field has a magnitude of 0.028 T and points along the +x axis, Find the magnitude of the net magnetic force that acts on the particle
A mass m = 6.3 kg hangs on the end of a massless rope L = 1.98 m long. The pendulum is held horizontal and released from rest. How fast is the mass moving at the bottom of its path
A coiled telephone cord forms a spiral with 74.0 turns, Determine the self-inductance of one conductor in the unstretched cord
A 1400kg weather rocket accelerates upward at 10m/s^ 2 . It explodes 2.5s after liftoff and breaks into two fragments, What was the direction of the heavier fragment
A diffraction grating with 750 slits/mm is illuminated by light that gives a first order diffraction angle of 34 degrees. What is the wavelength of the light
A compressed-air vessel has a volume of 10 ft^3. Cooling coils hold its temperature constant at 68 oF. The pressure now in the vessel is 100 psia. Air is flowing in at the rate of 10 lbm/h. How fast is the pressure increasing?
An air plane traveling at 201m/s makes a turn. what is the smallest radius of the circular path (in km) that the pilot can make and keep the centripetal acceleration under 5.0 m/s^2?
You are riding in an elevator on the way to the eighteenthfloor of your dormitory. The elevator is accelerating upwardwith a = 1.90 m/s2. what magnitudeof force must you apply
A pilot points his plane due north and flies at a speed with respect to air given by vpa=475 km/hr. A wind is blowing
its estimated that there are 1028 electrons in you body. suppose one millionth of those electrons were removed from
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