A cubical block of wood 0.100 m on a side and with density of 550 kg/m3...

A cubical block of wood 0.100 m on a side and with density of 550 kg/m3 floats in a jar of water. Oil with a density of 750 kg/m3 is poured on the water until the top of the oil layer is 0.035 m below the top of the block. a) How deep is the oil layer? b) What is the gauge pressure at the block’s lower face?

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genius_generous answered 2 years ago

A block of wood of mass 10.8 kg and density 4.42 x 102 kg/m3, floats on...

A block of wood of mass 10.8 kg and density 4.42 x 102 kg/m3, floats on water. (a) What is the minimum amount of aluminum (density 2.70 x 103 kg/m3) that can be placed on top of the wood block and cause the block of wood and the aluminum to sink? (b) If instead it was a block of ice of mass 10.8 kg and density 8.90 x 102 kg/m3. What is the minimum amount of aluminum that can be...

A wood cube 0.40 m on each side has a density of 750 kg/m³ What mass...

A wood cube 0.40 m on each side has a density of 750 kg/m³ What mass has to be placed on top of the wood so that its top is just at the water level?

3. A block of wood has a mass of 3.67 kg and a density of 600...

3. A block of wood has a mass of 3.67 kg and a density of 600 kg/m3. It is to be loaded with lead so that it is still floating in water completely immersed. What mass of lead is needed (density of lead is 11,300 kg/m3)

A raft is constructed of wood having a density of 6.00x102 kg/m3. Its surface area is...

A raft is constructed of wood having a density of 6.00x102 kg/m3. Its surface area is 5.50 m2 and its volume is 0.55 m3. When the raft is placed in fresh water, to what depth h is the raft submerged by its weight? The density of fresh water is 1000 kg/m3. Hint: Use Newton’s second to sum the forces (Buoyancy and weight) that are in equilibrium.

Say the density of air is 1.23 kg/m3 and the density of helium is 0.164 kg/m3...

Say the density of air is 1.23 kg/m3 and the density of helium is 0.164 kg/m3 when both are at STP. Let's model a balloon as a sphere of radius 0.12 m, with mass 2 g. 1) What is the mass of the helium that would fill a single balloon? 2) What is the buoyant force on a single balloon? 3) What is the net force on a single balloon? 4) If we attach 0.5 m of string (properties: 800...

A small block of wood with pwood = 440 kg/m3 and Vwood = 4.5 x 10-5...

A small block of wood with pwood = 440 kg/m3 and Vwood = 4.5 x 10-5 m3 is submerged in water (pH2O = 1000 kg/m3) to a depth of 1.5 m. The block is then released at rest and accelerates towards the surface. How high will it travel above the surface of the water? Ignore viscosity (friction) of water. Draw a FBD for full credit.

A 1-mm diameter sphere (density=7900 kg/m3) is dropped into a tank of oil (density=900 kg/m3). The...

A 1-mm diameter sphere (density=7900 kg/m3) is dropped into a tank of oil (density=900 kg/m3). The sphere develops a terminal speed of 0.25 cm/s, what is the oil's viscosity? You may assume a small Reynolds number. Show your work.

A 2.50 m -long, 550 g rope pulls a 14.0 kg block of ice across a...

A 2.50 m -long, 550 g rope pulls a 14.0 kg block of ice across a horizontal, frictionless surface. The block accelerates at 2.40 m/s2 . How much force pulls forward on (a) the ice, (b) the rope? Part A Express your answer with the appropriate units. Part B Express your answer with the appropriate units.

The density of copper is 8.92x10^3 kg/m3 . The resistivity is 1.73x10 ^-8 Ω m and...

The density of copper is 8.92x10^3 kg/m3 . The resistivity is 1.73x10 ^-8 Ω m and the weight of a copper atom is 63.5 amu (atomic mass unit). (i) Assuming each Cu atom contributes one conduction electron, calculate the electron mobility and the average time between collisions (relaxation time). (ii) Calculate the Fermi energy, Fermi wavevector, Fermi velocity and Fermi temperature. help its urgent please

a) A block of Aluminum has a density of 2700 kg/m^3 and a mass of 63...

a) A block of Aluminum has a density of 2700 kg/m^3 and a mass of 63 grams. The block is tied to one end of a string and the other end of the string is tied to a force scale. The block is allowed to hang in the air from the string. Calculate the force which will be registered on the scale. b) The block remains tied to the string but is now completely submerged in a container of water....

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