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- 1. If an immersed object displaces 8 N of fluid, what is the buoyant force on the block?EXPLAIN. 2. How should you place a screw on a table such that it exerts the smallest pressure against it?.EXPLAIN WHY. 3. An object with a volume of 100cm^3 is submerged in a swimming pool. What is the volumeof water displaced?. Why?. 4. You apply a flame to 1 L of water for a certain time and its temperature rises by 2°C. If youapply the same flame for the same time to 2L of water, by how much does its temperaturedecrease? . Why? 5. Which has greater kinetic energy? A) a car traveling at 30 km/hr. B) a car of half the mass traveling at 60 km/hr C) both the same. D) need more information EXPLAIN. 6. A melon is projected into the air with 100 J of kinetic energy in the presence of air resistance.When it returns to its initial level its kinetic energy isA) less than 100 J.B) more than 100 J.C) 100 J.D) need more informationEXPLAIN 7. Two identical golf carts move at different speeds. The faster cart…6. A solid aluminum bar weighs 89 N in air. a. What is its volume? b. If it is suspended from a rope and totally submerged in water, what is the tension in the rope?large, cylindrical water tank with diameter 3.00 m is on a platform 2.00 m above the ground. The vertical tank is open to the air and the depth of the water in the tank is 2.00 m. There is a hole with diameter 0.500 cm in the side of the tank just above the bottom of the tank. The hole is plugged with a cork. You remove the cork and collect in a bucket the water that flows out the hole. (a) When 1.00 gal of water flows out of the tank, what is the change in the height of the water in the tank? (b) How long does it take you to collect 1.00 gal of water in the bucket? Based on your answer in part (a), is it reasonable to ignore the change in the depth of the water in the tank as 1.00 gal of water flows out?
- 6. Please help answer this question, thank you so much!! :)2- Consider a U-tube filled with mercury as shown in Figure. The diameter of the right arm of the U-tube is D 1.5 cm, and the diameter of the left arm is twice that. Heavy oil with a specific gravity of 2.72 is poured into the left arm, forcing some mercury from the left arm into the right one. Determine the maximum amount of oil that can be added into the left arm. Answer: 0.0884 L Oil poured in here SG=2.72 2D 12 cm D= 1.5 cm Mercury SG= 13.6A boat with a flat bottom and it's cargo weight 4285N. The area of the boat's bottom is 7m2. How far below the surface of the water is the boat's bottom? The surface of the lake? Use g=9.8m/s2
- 3. An object has a weight of 8.10 N when in air. However, it apparently weighs only 4.20 N when it is completely submerged in water. What is the density of the object? 22911 kg/m³ ceil6 cci16 c ci16 cci16 cei 16 cci16 cci16°10. A 40 kg mass is attached to one end of a spring, which has a spring constant of 700 N/m. The other end of the spring is attached to the bottom of a full tank of water. The mass has a volume of 0.25 m3 and is completely submerged in the water.a. Will the mass float, sink, or remain stationary?b. If the mass sinks or floats, determine how far the spring will compress or stretch?3. What fraction of a piece of iron will be submerged when it floats in mercury? 4. A nozzle with a diameter of 0.500 cm is attached to a garden hose with a radius of 0.900 cm where water flows at 1.96 m/s. Calculate the pressure in the hose, given that the absolute pressure in the nozzle is 1.01x10°N/m² and assuming level, frictionless flow.