7. What force is exerted on a stationary flat plate held perpendicular to a jet of water as shown in the figure? The horizontal speed of water is 80 cm/s, and 30 mL of the water hits the plate each second. Assume the water moves parallel to the plate after striking it. One milliliter (mL) of water has a mass of 1.00 g.
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- Your low-flow showerhead is delivering water at 1.1 × 10-4 m3/s, about 1.8 gallons per minute. If this is the only water being used in your house, how fast is the water moving through your house’s water supply line, which has a diameter of 0.021 m (about ¾ of an inch)?Water is discharged from the hose with a speed of 42ft/sec. Determine the two possible angles the fireman can hold the hose so that the water strikes the building at B. Take S=20ft. VA = 40 ft/s 0 8 ft 4 ftThree liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are 0.45 L, 2.6 g/cm³; 0.20 L, 1.0 g/cm³; and 0.40 L, 0.65 g/cm³. What is the force on the bottom of the container due to these liquids? One liter = 1 L = 1000 cm³. (Ignore the contribution due to the atmosphere.) N
- A child has a spherical helium balloon tied to her wrist as she walks through the park at a constant speed of 0.46 m/s in the +ŷ-direction. The balloon has a diameter of 7 cm, and it is tied to a 1 m long string. Take the density of air to be 1.108 kg/m³, the density of helium to be 0.122 kg/m³, and the density of the latex of the balloon to be 0.013 kg/m². The viscous drag constant of the balloon is 0.00148 kg/s. What is the direction of the string from the girl's wrist to the balloon? û = xŷ + X 2Q16A student fills a tank of radius r with water to a height of h1 and pokes a small, 1.0 cm diameter hole at a distance h2 from the bottom of the tank. The water flows out of the small hole into an empty, 0.2 m-diameter container placed below the tank. The student uses a garden hose to keep the water level in the tank at the original height. What is the velocity of the water as it leaves the hole near the bottom of the tank? let h1=0.55m let h2=0.12m r=0.5m 2. What is the volume flow rate of water from the garden hose into the tank? (Hint: What is the flow rate out of the tank?) 3. After 60 seconds of operation, what is the water pressure at the bottom of the container that is being used to catch the water leaving the tank? let h=1.7m
- A garden hose has an inner radius of 1 cm, is connected to a spray nozzle (radius: 0.4 cm). If this hose is connected to a house capable of delivering 9 L/s, what is the velocity of the water in the hose?A 7 m diameter hot air balloon is neither rising nor falling. The density of atmospheric air is 1.3 kg/m^3. The total mass in kg of the balloon including the people on board is a.207 b.163 c.180 d.234Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.497×10−3 m3/s and the diameter of the nozzle you hold is 5.41×10−3 m. At what speed v does the water exit the nozzle?
- Question 3 (1 point) 1.00 L (0.00100 m*3) of water is poured into a large container. 100 g of ice is added to the container. The ice floats freely and does not touch the bottom of the container. The densigy of ice is 917 kg/m. When the ice melts, what happens to the level of the water in the container? The water level rises. The water level stays the same. The water level falls. There is not enough information to tell.E 3. A spring is attached to the bottom of an empty swimming pool, with the axis of the spring oriented vertically. An 8.60- kg block of wood (density = 770 kg/m³) is fixed to the top of the spring and compresses it. Then the pool is filled with water, completely covering the block. The spring is now observed to be stretched twice as much as it had been compressed. Determine the percentage of the block's total volume that is hollow. Ignore any air in the hollow space. % 20 C $ 27 R 888 V % 5 T G tv MacBook Air 6: B P H & F7 N 8 M ( 9 AO K O P zoom CIA by m EA 04 M wies or the puffer delete 21 A A