Eight spherical rain drops of the same mass and radius are falling down with a terminal speed of 6 cm-s. If they coalesce to form one big drop, what will be the terminal speed of bigger drop ? (Neglect the buoyancy of the air)

Q: 6.77 A windmill is operating in a 10 m/s wind that has a den- sity of 1.2 kg/m'. The diameter of the…

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Q: A person does the back float in a freshwater lake and later does the same in the ocean. In which…

A: The body will float on the surface of liquid if the Buoyant force applied by liquid on the bottom…

Q: magine that we have two disks that we can put against one another and remove all the air between…

A: The force required to pull apart two flat, semi-circular disks that have a vacuum between them is…

Q: 12.4 • (a) What is the average density of the sun? (b) What is the av- erage density of a neutron…

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Q: A flat roof is very susceptible to wind damage during a thunderstorm and/or tornado. If a flat roof…

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Q: Logs sometimes float vertically in a lake because one end has become water-logged and denser than…

A: Write the equation for the fraction of submerged corresponding to the Archimedes' principle.…

Q: Water is exiting a garden hose at 12.0 m/s.   How fast does it exit when someone uses their thumb to…

A: The rate of flow of water or the speed of the water is inversely proportional to the cross-sectional…

Q: A piece of wood of relative density 0.75 floats in a river, what fraction of the volume remains…

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Q: A 4-ft-high, 3-ft-diameter cylindrical water tank whose top is open to the atmosphere is initially…

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Q: What fraction of the volume of an iceberg (density 917kg/m3) would be visible if the iceberg floats…

A: Given : Density of iceberg (ρiceberg) = 917 kg/m3 Density of saltwater (ρsaltwater) = 1024 kg/m3…

Q: Akiko Tam, a swimming champion whose mass is 60 kg stands on a rectangular swimming raft 3.0 m long…

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Q: Find the center of mass of a laminate bounded by y=−x,y=x,y=2 with variable density modeled by \rho…

A: The objective of the question is to find the center of mass of a laminate with variable density. The…

Q: A cubical block of wood measuring 0.20m on each edge has a mass of 3.0kg. It is floating in water. A…

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Q: Spherical panicles of a protein of density 1.8 g/cm3 are shaken up in a solution of 20°Cwater. The…

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Q: There is an issue with the toilets at school.  If the water is coming out at 5.0 m/s, how much water…

A: Velocity of water coming out (v) = 5 m/s  Mass of person (m) = 95kg

Q: A water tumbler is in the shape of a uniform, thin, hollow cylinder that is closed at the bottom and…

A: (a) The center of mass of the empty tumbler is at the following height from the base :  yt=8cm

Q: Water has a mass density of 1000 kg/m3.  The depth of a swimming pool at the deep end is about 3.0…

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Q: A 0.53 kg piece of wood floats in water but is found to sink in alcohol (SG = 0.79), in which it has…

A: Given,mass of wood, The specific gravity of alcohol, the apparent mass of wood, The specific gravity…

Q: 2) Your Physics instructor (m= 55 kg) doesn't swim. You have a number of pine boards that are 10 cm…

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Q: A container has a hole with a diameter of 1.8 cm^2 at the bottom. Through the hole goes 280 cm^3 of…

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Q: 6.84 PQ1 A large tank of liquid is resting on a frictionless plane as shown. Explain in a…

A: Given a picture of tank containing water we have to find out what will happen if water will flow out…

Q: approximately 3.97 meters. What is the tension felt by the rope? (Take note that the rope is fully…

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Q: 12.4 (a) What is the average density of the sun? (b) What is the av- crage density of a neutron star…

A: (a) Mass of the sun is msun=1.989×1030 kg Radius of the sun is rsun=6.957×108 m Volume of the sun is…

Q: 4.5' 2.0' B 64' Not to scale

A: Given,vo = 47.9 ft/secheight of A above ground, h = 2.0'

Q: A glass capillary of diameter 0.30 mm dipped in an olive oil (p=0.903 g/cm³) of surface tension 32…

A: Diameter of the tube is d = 0.3×10-3 m  Density of the liquid is , ρ = 0.903 ×(10-3/10-6) = 9.03×102…

Q: How high would you have to go in the atmosphere for half of the mass of air to be below you?

A: Atmospheric pressure decreases with increasing height. The half of the atmospheric molecules are…

Q: What fraction of the iron cube’s volume floats above the surface of the mercury?

A: Given data:     The density of iron is: ῤiron = 7874 kg/m3 The density of mercury is: ῤmercury =…

Q: A block of mass 0.85 kg and density 600 kg/m3 is forced under the surface of the water by means of a…

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Q: A man is standing on a 5 kg plank of wood Im x 1m x 5cm in water. What value of mass would likely…

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Q: Logs sometimes float vertically in a lake because one end has become water-logged and denser than…

A: Fraction of log above the water = 0.54 Therefore the fraction of log submerged in water = 100 - 0.54…

Q: Through an underground pipe 15 cm in diameter, water circulates at a speed of 4.3 cm / s. Determine:…

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Q: a WBallon A ball of mass m is held under the surface of a pool. The instant it is released, it has a…

A: When inside the water, the ball experiences buoyant force in addition to gravity. We will write…

Q: A large SUV with mass m = 2.67 x 10^3 kg is at rest as shown in the figure. Both pistons have a…

A: PS=PLFSAS=FLALFS=ASALmcarg=πR2SπR2Lmcarg=R2SR2Lmcarg