# the density at point a a greater than b the same as c

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Unformatted text preview: ng. The wavelength of the standing wave with the lowest frequency is A) 0.25 m B) 0.5 m C) 1 m D) 2 m E) 4 m Page 8 1m 17. In an incompressible ﬂuid, 3 (a) the pressure at B is . . . the pressure at point A. A) greater than B) the same as C) less than A 3 (b) 3 18. the density at B is . . . the density at point A. A) greater than B) the same as C) less than A large hole is dug into the ground at a 45◦ angle with the horizontal as shown, and is ﬁlled with water (ρ = 1000 kg/m3 ). What is the pressure at the star, 4 m below the water level? Assume atmospheric pressure is 105 Pa. A) 0.39 × 105 Pa B) 0.45 × 105 Pa C) 0.61 × 105 Pa D) 1.00 × 105 Pa E) 1.39 × 105 Pa F) 1.55 × 105 Pa B Patm=105 Pa 4m 45° 3 19. A cube with mass 1 kg and side 5 cm (and volume 1.25 × 10−4 m3 ) is suspended by a rope in water (ρ = 1000 kg/m3 ). Find the tension in the rope. 5cm Page 9 1kg 20. The ﬁgure shows a wooden cube (0.5 m on each side) ﬂoating in water (ρ = 1000 kg/m3 ). The top of the cube is 0.2 m abov...
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