12:28 Q3. A hot air balloon derives its lift from the property of fluids as stated by A. Bernoull's Principle. B. Archim

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12 28 Q3 A Hot Air Balloon Derives Its Lift From The Property Of Fluids As Stated By A Bernoull S Principle B Archim 1 (37.83 KiB) Viewed 70 times

12 28 Q3 A Hot Air Balloon Derives Its Lift From The Property Of Fluids As Stated By A Bernoull S Principle B Archim 2 (37.83 KiB) Viewed 70 times

12:28 Q3. A hot air balloon derives its lift from the property of fluids as stated by A. Bernoull's Principle. B. Archimedes Principle. C. Boyle's Law. D. Pascal's Principle. ge Ringer Q5. An iceberg is floating in the ocean with 10% of its volume extending above the ocean's surface. What can you say about the iceberg? A. Its weight is greater than the water it displaces. C. It displaces only 90% of its weight in water. 8. Its density is 90% that of the ocean water. D. It must be resting on the bottom, since ice can't float in salt water. C. 250 N E. 4000 N Q6. Three individuals stand with all of their weight on the heel of one foot: a man of weight 600 N and a heel area of 100 cm³, a child of weight 200 N and a heel area of 25 cm and woman of weight 450 N and a heel area of 2 cm². The one exerting the least pressure on the ground is: A. the man. B. the child. C. the woman. D. all exert the same. Q7. A hydraulic jack is used to lift a load of weight 1000 N. The load-bearing cylinder has a radius of 4 cm, and the other piston has a radius of 1 cm. What force must be exerted on the smaller piston to support the load? A. 62.5 N ₁5G B. 125 N D. 1000 N QS. A child is drinking a liquid with a straw. Which of the following statements is true? A. The fluid is being pulled up into the straw. B. It is easier to use a longer straw than a shorter straw, because liquid weight increases the pressure at the bottom. C. When the pressure in the straw is reduced, atmospheric pressure on the surface of the liquid pushes the liquid up the straw. D. Thick, viscous fluids are easier to drink with a straw than thin, nonviscous liquids. 09. A sharp knife can more easily cut objects than can a dull knife because A. a greater force can be applied with a sharp knife. 8. a greater pressure can be applied with a sharp knife. B. quarter. C. D. all the same. C. dullknives cannot apply large forces. D. sharp knives have edges that can fit between the molecules of the object. silver dollar. Q10. A penny, a quarter and a silver dollar lie at the bottom of a wishing well filled with water. The coin experiencing the largest downward force on its top surface due to the water pressure is the A. penny.