Ex./7 : A horizontal circular loop of radius 0.02 m is lowered into a liquid and form film. The force due to surface tension of the liquid is 0.0113 N. Calculate the surface tension of crude oil.
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A: Given : Mass of block = 12 kg Length of block = 12 cm = 0.12 m Breadth of block = 10 cm = .1 m Width…
Q: A 12.0 kg block of metal measuring 12.0 cm by 10.0 cm by 10.0 cm is suspended from a scale and…
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- An open container accelerates down a 30 degrees plane at 5m/s^2. What is the slope of the water surface in the container? If the container accelerates with the same magnitude in the opposite direction what is the slope of the water surface?A barge floating in fresh water (ρ = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 550 m2 and height H = 2.0 m. When empty the bottom of the barge is located H0 = 0.45 m below the surface of the water. When fully loaded with coal the bottom of the barge is located H1 = 1.3 m below the surface. a. Select the correct free-body diagram for the barge when it is empty. b. Write an equation for the buoyant force on the empty barge in terms of the known data. c. Determine the mass of the barge in kilograms. d. Which freebody diagram represents the barge when it is loaded with coal? e. Find the mass of the coal in terms of the given data. f. Find the mass of the coal in kilograms. g. How far would the barge be submerged (in meters) if mc,2 = 450000 kg of coal had been placed in the empty barge?A piece of aluminum with a mass of 1.0 kg and density of 2700 kg/m3 is suspended from a light cord and then completely immersed in a container of water having density 1000 kg/m3. a)Determine the volume of the piece of aluminum. b)Determine the tension in the cord when the aluminum is immersed in the container of water.
- The pressure exerted by a phonograph needle on a record is surprisingly large. If the equivalent of 1.50 g is supported by a needle, the tip of which is a circle 0.150 mm in radius, what pressure is exerted on the record in N/m2?A 1.00-kg beaker containing 1.63 kg of oil (density = 916 kg/m3) rests on a scale. A 1.94-kg block of iron is suspended from a spring scale and is completely submerged in the oil (see figure below). Find the equilibrium readings of both scales. top scale N bottom scale NQuestion: 1 If the pressure inside a storage tank is 0.9 atm at sea level. Then what is the gauge pressure inside the tank ? Pabs = Patm + PG A negative gauge pressure means that the absolute pressure inside the tank is less than the atmospheric 0.9 = 1 + PG pressure PG =-0.1 atm %3D
- The gauge pressure inside a soap bubble is 0.5 torr. If the surface tension in the soap film is 25 mN/m, what is the diameter of the soap? 0.99 um O 2.0 um O 1.5 mm O 3.0 mmA barge floating in fresh water (ρ = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 550 m2 and height H = 2.0 m. When empty the bottom of the barge is located H0 = 0.45 m below the surface of the water. When fully loaded with coal the bottom of the barge is located H1 = 1.8 m below the surface. 1)Find the mass of the coal in kilograms. 2) How far would the barge be submerged (in meters) if m2 = 450000 kg of coal had been placed on the empty barge?A plastic sphere floats in water with 50.0% of its volume submerged. This same sphere floats in glycerin with 40.0% of its volume submerged. Determine the densities of (a) the glycerin and (b) the sphere.
- A piece of lead has the shape of a hockey puck, with a diameter of 7.5 cm and a height of 2.3 cm . If the puck is placed in a mercury bath, it floats. How deep below the surface of the mercury is the bottom of the lead puck?Water rises to a height of 4.5 cm in a capillary tube of radius (r). Find (r) assuming the surface tension of water is 72 dynes/ cm. Take angle of contact of water in glass as 15°. 3 Density of water = 1000 kg/m',g = 9.8 m/s². %3DA 1mm diameter glass bread is dropped into a cylinder of oil at room temperature. It falls 25 cm to the bottom in 60s at constant speed. The glass and oil have densities of 2500 kg/m^3 and 900 kg/m^3, respectively. A. What is the mass of the bead? B. What is the viscosity of the oil? C. Would you expect the time fall to increase, decrease, or remain the same if the oil was heated up first?