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A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg.
(a) Calculate the magnitude of the acceleration starting from rest if each dog exerts an average force of 185 N backward on the snow.
(b) What is the magnitude of the acceleration once the sled starts to move?
(c) For both situations, calculate the magnitude of the force in the coupling between the dogs and the sled.
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A charge of -4.04 μC is fixed in place. From a horizontaldistance of 0.0462 m, a particle of mass 8.45 x10-3 kg and charge -8.38 μC is fired with aninitial speed of 86.0 m/s directly toward the fixed charge. What is the distance of closest approach..
an object initially has kinetic energy k. the object then moves in the opposite direction with 13 times its initial
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Barium and Iodine are routinely used for X Ray procedures. Which areas of the body is Barium used to image? Which areas of the body is Iodine used to image? Explain how the Barium or Iodine contrast medium allows imaging of the areas previously id..
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
In the reference frame of the laboratory, a particle moves in the x-y plane with a velocity of 0.7c at an angle of 40 degrees with the x-axis. Find the velocity (magnitude and direction) of this particle
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