(a). When a 0.80 kg crown is submerged in water, its a…
(a). When a 0.80 kg crown is submerged in water, its apparent weight is measured to be 7.30 N. what is the density of the crown (take density of water to be 1,000kg/m3). (2.5 points) (b). The blood flow speed through an aorta with area 3.14 x 10-4 m2 is 0.265 m/s. If hardening of the arteries causes the aorta to be constricted to an area of 2.01 x 10-4 m2, what is the flow speed in the constricted area? (1.5 points)
Read Details(a). Three forces, F1 = 150 N, F2 = 10.0 N and F3 = 30…
(a). Three forces, F1 = 150 N, F2 = 10.0 N and F3 = 30.0 N act on a 15 kg object. If F1 and F2 act in same direction, while F3 acts in the opposite direction, what is the magnitude of the acceleration of the object? (2.5 points) b). To negotiate a curve of radius 38 m, the maximum force of static friction (centripetal force) that can act on a 1,350-kg car going around the curve is 8,200 N. What speed limit should be posted for the curve so that cars can negotiate safely? (3.0 points) c). With what speed must a 75 kg object be going to have a linear momentum of 925 kg m/s? (1.5 points)
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