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Solve the all parts of given question:
Question: Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 16minutes.
Part A: Determine the drag force on the runner during the race. Suppose that the cross section area of the runner is 0.72 m2 and the density of air is 1.2 kg/m3.
Part B: What is this force as a fraction of the runner's weight?
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a 1-cm-thick layer of water stands on a horizontal slab of glass. a light ray in the air is incident on the water 55
An intense light source radiates uniformly inall directions. At a distance of 5.2 {\rm m} from the source the radiation pressure on aperfectly absorbing surface is6.9×10-6 {\rm Pa}. What is the total average power output of the source
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For an equilateral prism, the angle of incidence of 49 degree at boundary 1, Calculate the angle of refraction at boundary 2
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a billiard ball of mass 0.162 kg has a speed of 1.31 ms and collides with the side of the billiard table at an angle of
A 200 kilograms cart is pushed up an incline at constant velocity. Find how much work does the pushing force do in moving the cart up 1.5 meter from the starting point, friction is negligible
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