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Are you as strong as a horse? Purpose: To understand the concept of work and power and to calculate the power generated by yourself or a friend. Materials: A tape measure, stairs, and a stopwatch, cell phone, or wristwatch. Key Physics Concept: Power is the rate of doing work. Power can be calculated by dividing the work done by the time it takes to do the work; in this case we will do work against gravity on a stair case (you may add your power in doing pushups to test your arm power). Can you guess what your peak horsepower is? You may do the stairs one at at time or multiple stairs at a a time; whatever is most safe and efficient for you. Procedure: Observations: Analysis: Conclusions: Application: 1. Will your hp change if you performed the activity for a longer duration (for example, climbed the CN tower staircase)? In what way? Explain. 2. Research the horsepower generated by a car. How does the average person's peak power rating compare to it? How many average people would it…

You have a summer internship at NASA and are working on plans for a new space station to be launched into orbit around the Earth. The design of the space station is shown. It is to be constructed in the shape of a hollow ring of mass 47,000 kg. The structures other than the ring shown in the figure have negligible mass compared to the ring. Members of the crew will walk on a deck formed by the inner surface of the outer cylindrical wall of the ring, with radius r = 150 m. The thickness of the ring is very small compared to the radius, so we can model the ring as a hoop. At rest when constructed, the ring is to be set rotating about its axis so that the people standing inside on this deck experience an effective free-fall acceleration equal to g. The rotation is achieved by firing two small rockets attached tangentially to opposite points on the rim of the ring. Your supervisor asks you to determine the following: (a) the time interval during which the rockets must be fired if each…

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Homework - Parts A & B Question: The tank has a 4-cm-diameter plug at the bottom on the right. All fluids are at 20°C. The plug will pop out if the hydrostatic force on it is 55 N. Part A - What will be the height of water H? Part B - What will be the reading h on the mercury manometer on the left side? Hint : The hydrostatic force on it is 55 N **

Hi! I need help with this practice problem (all parts).   Thank you in advanced!

Fluid Mechanics Basra Engineering Technical College Hydrostatic Forces Second Stage MSc. Zahraa A. Nadeem Home Works 1- A 60 cm square gate has its top edge 12 m below the water surface. It is on a 45 angle and its bottom edge is hinged as shown in Fig. What force P is needed to just open the gate and its Water location? Hinge 45° 2- A tank containing water is shown in Fig. E Calculate the total resultant force acting on side ABCD of the container and the 6 ft location of the center of pressure. Y = 62.4 Ib/ft3 Water -20 ft.

Question 4 A tank of water has a trap door inclined at an angle 0 to the horizontal, as shown in Figure Q4. The door is square, with a length and width of L, and the hinge of the door is a depth ho below the surface. The water is stationary and has a density, p. a) Find the horiztonal force on the door due to static pressure b) Find the vertical force on the door due to static pressure c) Find the moment on the door hinge due to static pressure d) The weight of the door induces a anti-clockwise moment, Mw, which acts to stop the door from opening. Find the ho such that the static pressure is large enough to open the door M JO L ho Figure Q4: Tank of water, with a hinged door.

I need to lift a large engine block but at my age, I can only create 160lbs of force. I will build a lever to assist me. The fulcrum is placed 1.5 ft away from the 575lb block. How far away will i need to be from the fulcrum to achieve movement of the block?

Which one of the following statements is true regarding pressure? A. Pressure is a scalar quantity B. Pressure is a vector quantity C. Pressure is a scalar quantity only vwhen the area is infinitesimally small D. Pressure is a vector quantity only when the area is infinitesimally small Select one: O A B O C An arm of a teapot is completely filled with tea (density=p) If the arm has a length of 1 and i inclined at 30o to the horizontal, what will be the pressure difference between the two point Cat the mouth and D at the base of the arm? a) pgl b) pg\/2 c) v2pgl d) 2pgl Select one: O A B O C

5. A container weighs 3 lbf when empty, 53 lbf when filled with water and 66 lbf when filled with glycerin. Find the specific gravity of the glycerin.

s) A cylinder that is 750 mm in diameter and 2.5 m long has a specific weight of 835 N/m³. It eid down into position with a cable attached to the sea floor. At this location, the sea is 500 m deep and the cylinder is to be held in a fully submerged position just 3 m above the sea floor. Find the resulting tension in the cable.

11. A beaker of water sits on a balance. A metal block with a mass of 70 g is held suspended in the water by a spring scale in position 1, as shown. In this position, the reading on the balance is 1260 g, and the spring scale reads 120 g. When the block is lifted from the water to position 2, what are the readings on the balance and spring scale? Balance reading Spring scale reading 1190 g 1190 g 1260 g 1330 g 120 g (A) (В) (C) (D) 190 g 120 g 120 g

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A block of metal measures 12 cm by 10 cm by 10 cm. When the block is hung from a spring scale, as shown in Figure 3a, the scale reads 30 kg. This is the "true mass" of the block. Suppose we attempt to measure the block's mass under water. The same mass, while hanging from the same scale, is completely submerged in water, as shown in Figure 3b. What is the reading (in kilograms) on the spring scale? Show and explain your work. Scale Figure 3a Figure 3b

The tank depicted in in the diagram is located at an oil refinery. There is rectangular hatch locatedon one side that gives access for maintenance. The company will be replacing the hatch door andhas hired you to assist with the design requirements.a) Describe to the client what is the resultant force and center of pressure on the wall labelled ‘A’ onthe diagram above. (P1)b) Calculate the resultant force acting on the hatch door and the location of the centre of pressure.(P2)II. (M1) The client is procuring a new hydraulic lifting jack. The jack is rated to lift 2000kg. Given thatthe diameter of the pumping piston is 25 mm and the lifting piston is 40 mm, calculate for theclient:a) The force needed on the pumping piston to raise the max load.b) The pressure in the oil.c) If the pumping piston moves 1cm with every pump, what distance does the lifting piston move

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6. A cylindrical container has a diameter of 0.5 m and a height of 1 m. If it is to be filled with a liquid having a specific weight of 2000 N/m³, how many kg of this liquid must be added?

5. A human being has an average venous blood pressure of 12 mm Hg (Hg = mercury). The density of Hg (mercury) is 13,530 kg/m3. How high does a saline bag have to be raised to just barely equal to that of the blood in the vein) of saline through a line and needle inserted into a person's vein? The density of saline is 1020 enable the flow (that is, the pressure of the saline at the needle kg/m3.

A rectangular barge (with a flat bottom) and its cargo weigh 90,000 N. The barge measures 10 m long x 3 m wide x 1 m high. How much of the barge (height of its side) can be seen above the water line when it is floating?

2.) The container is slowly moved vertically downward until the pressure in the container is 105kPa. L What will be the height of the air space in the container (i.e, the vertical distance between the closer upper end and the water surface in the container)? | 200 mm 300 mm air water 75 mm h water