Consider the following section of pipe. The velocity of water (Pwater 1000 kg) and height are given for two different points in the pipe. Use this information to answer the following questions. h₁ V₁ = 2.9 m h₁ = 3.2 m V₂ = 6.7 m S h₂ 1.9 mi Point 1 What is the ratio of the cross-sectional area t point 1 to the cross-sectional area at point 2? A₁ A₂ x What is the difference in pressure between points 1 and 2? (Find P2 - P₁. Include a negative sign if that's what you calculate.) P₂-P₁ = 2 X Pa Which direction is the water flowing through the pipe? 3 From Point 1 to Point 2✔ Point 2 I h₂

A balloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg. Its volume is 5.0 m?. The density of air is 1.3 kg/m. 12. What is the average density of the balloon? A) 0.2 kg/m3 B) 0.4 kg/m3 C) 0.8 kg/m D) 1.0 kg/m E) 1.2 kg/m3 13. Will the balloon rise, fall, or remain stationary, and why? A) The balloon will fall because its density is greater than that of air. B) The balloon will remain stationary because its density is less than that of air. c) The balloon will rise because the upward buoyant force is greater than its weight. D) The balloon will fall because the upward buoyant force is less than its weight. E) The balloon will fall because the downward buoyant force is greater than the upward buoyant force.

Calculate the mass of a solid gold rectangular bar that has dimensions /wh = 5.10 cm x 15.0 cm x 20.0 cm. (The density of gold is 19.3 x 10³ kg/m³.) 0.3986e18 X Determine the volume of the gold bar and use the volume and the density of gold to find the mass of the bar. kg Need Help? Master It

A woman of m = 58 kg stands on the ice. The contact area between her skate and the ice is A = 0.0047 m2. a. Express the force that the person exerts on the ice, F, in terms of m and g. You do not need to include the force of the column of air above her.