a. Pressure at the liquid surface. Your answer b. The pressure at the interface between oil and salt water. Your answer c. The force acting on the interface between oil and salt water. Your answer
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- A sea exhibit at an aquarium is 24 meters long and 11 meters deep with a glass wall. It is open to the air at the very top. i. What is the total pressure at the top of the tank (including atmospheric pressure)? ii. What is the total pressure at the bottom of the tank (including atmospheric pressure)? iii. The other side of the glass wall is at atmospheric pressure. What is the total net force on the wall? (hint: the pressure changes linearly as a function of depth, so you can use the average pressure to find the force)4. The deepest point known in any of the Earth's oceans is 10.92 km deep. What is the pressure at this depth? Use the density of sea water. Express your answer in pascals and also in atmospheres.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…
- 3. Now you will design a pressure receptor. First, draw a circle on a piece of paper and then draw two or three lines from the center to beyond the perimeter of the circle. Imagine that the circle represents a balloon and the lines are threads, which are attached to the surface of the balloon. How would blowing into the balloon, to increase the pressure of the air inside, affect: a. The size of the balloon? b. The threads attached to the surface of the balloon? c. Imagine that the threads are the terminals and axons of sensory neurons. If the terminals are sensitive to stretch, what will happen to the frequency of the action potentials in the axons as the pressure inside the balloon is changed?1. calculate the pressure exerted by pin .if the force by the pin is 100 N and area of contact is 0.01 mm² 2. Calculate the pressure exerted by a block (weight 80 N) on a bench if the area it's pressing on is 2 square metres. 3. Calculate the pressure exerted by a block (m=6 kg) on a bench if the area it's pressing on is 2 square metres.4. Consider an airplane flying at 5 Km and is cruising at 80 m/s. What is the velocity of flow at a point on the airfoil where the pressure is 4.8 x 10ª N/m².
- 8. A block of wood has a density 0.520 g/cm³ and mass 3,900 g. It floats in a container of oil (the oil's density is 0.850 g/cm³). What volume of oil does the wood displace?1. Piston A has a cross section of 1,600 cm² while that of B is 950 cm². B is higher that A by 2.6 m. if the intervening passages are filled with a liquid having a specific gravity of 1.24 and a force of 4.4 kN acting on B A) What must be the pressure at piston B B) What must be the pressure at piston A C) What must be the force exerted at piston A