Homework Answers
When the volumetric expansion coefficient will be larger, change in density will also be larger. larger change in density results in greater buoyancy force.
For greater buoyancy force, greater natural convection current will be initiated.
Hence, given statement is true.
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Consider two fluids that have the same viscosity. One of them has a large volumetric expansion...
An oscillator is used to measure the viscosity of fluids. The oscillator is submerged in two diff...
An oscillator is used to measure the viscosity of fluids. The oscillator is submerged in two different fluids and the signal of the oscillation is recorded in each case as shown in the plots below. A(0 Case A Case B Which of the two fluids has the smallest damping coefficient? OCase A OCase B OSame for both Survey Question) Briefly explain your answer to the previous question. )Consider Case A's plot above. If the mass of the oscillator is increased,...
Two rings each have a current I 1.0 Amp running through them. One has a radius...
Two rings each have a current I 1.0 Amp running through them. One has a radius 1.0 cm, the other 2.0 cm. a) Place them so they are concentric with each other, both have current in clockwise direction. Find the magnitude and direction of the magnetic field at the center of the rings. b) Rotate the small ring 90 degrees so that from above, you o on the right. Find the magnitude and direction of the magnetic field at the...
Two large containers A and B of the same size are filled with different fluids. The...
Two large containers A and B of the same size are filled with different fluids. The fluids in containers A and B are maintained at 0° C and 100° C, respectively. A small metal bar, whose initial temperature is 100° C, is lowered into container A. After 1 minute the temperature of the bar is 90° C. After 2 minutes (since being lowered into container A) the bar is removed and instantly transferred into the other container. After 1 minute...
Two oils have the same kinematic viscosity at room temperature. Oil brand A has a viscosity...
Two oils have the same kinematic viscosity at room temperature. Oil brand A has a viscosity index (VI) of 100. Oil brand B has a VI of 220. At a temperature of -10°C which oil brand has a lower viscosity.
Two large containers A and B of the same size are filled with different fluids. The...
Two large containers A and B of the same size are filled with different fluids. The fluids in containers A and B are maintained at 0C and 100C, respectively. A small metal bar, whose initial temperature is 100C, is lowered into container A. After 1 minute the temperature of the bar is 90C. After 2 minutes (since being lowered into container A) the bar is removed and instantly transferred to the other container. After 1 minute in container B, the...
Consider the following two situations: 7) Consider the following two situations: (1) We have two charges,...
Consider the following two situations:
7) Consider the following two situations: (1) We have two charges, one positive and one negative, in an empty space (that is, nothing around them at all), as shown below. (2) We have the same two charges at the same distance from one another in a fluid composed of a large number of positive and negative ions. A) In which situation will the attractive force between these two charges be greater? Explain your reasoning. B)...
Two objects of different material have the same mass and temperature. When adding them equal amount...
Two objects of different material have the same mass and temperature. When adding them equal amount of heat, the final temperature of each one can be different since they have different? Specific heat Density Expansion Coefficient Thermal conductivity Volume
organisms. If we have a sphere moving in a fluid of density ρ and viscosity μ,...
organisms. If we have a sphere moving in a fluid of density ρ and viscosity μ, and the sphere has a radius R and speed r and drag coefficient Co, then the drag and viscous forces are given by these equations: 2. in this problem, we'll estimate which resistive force- viscous force or drag force-dominates for two different The Reynolds number is given by Re ()Rv. For air and water, we can use the densities and viscosities in the table...
2) Two copper wires have the same voltage across them and the same length, but one...
2) Two copper wires have the same voltage across them and the same length, but one wire has twice the diameter as the other. How much power is dissipated in the wire with twice the diameter compared to the other wire?A) 1/4 as much B) 1/2 as much C) the same amount D) twice as much E) four times as much
Question 5 [20 marks) Consider Coutte flow, which occurs when we have a fluid suspended between two parallel plates, on...
Question 5 [20 marks) Consider Coutte flow, which occurs when we have a fluid suspended between two parallel plates, one of which is moving and the other of which is stationary. The velocity profile between these two plates is linear. We have water between these two plates and distance separating them of 1 mm. Given this information: (a) What is the force exerted on the stationary plate per m2 if the moving plate has a velocity of 0.1 m/s in...
An oscillator is used to measure the viscosity of fluids. The oscillator is submerged in two different fluids and the signal of the oscillation is recorded in each case as shown in the plots below. A(0 Case A Case B Which of the two fluids has the smallest damping coefficient? OCase A OCase B OSame for both Survey Question) Briefly explain your answer to the previous question. )Consider Case A's plot above. If the mass of the oscillator is increased,...
Two rings each have a current I 1.0 Amp running through them. One has a radius 1.0 cm, the other 2.0 cm. a) Place them so they are concentric with each other, both have current in clockwise direction. Find the magnitude and direction of the magnetic field at the center of the rings. b) Rotate the small ring 90 degrees so that from above, you o on the right. Find the magnitude and direction of the magnetic field at the...
Consider the following two situations:
7) Consider the following two situations: (1) We have two charges, one positive and one negative, in an empty space (that is, nothing around them at all), as shown below. (2) We have the same two charges at the same distance from one another in a fluid composed of a large number of positive and negative ions. A) In which situation will the attractive force between these two charges be greater? Explain your reasoning. B)...
organisms. If we have a sphere moving in a fluid of density ρ and viscosity μ, and the sphere has a radius R and speed r and drag coefficient Co, then the drag and viscous forces are given by these equations: 2. in this problem, we'll estimate which resistive force- viscous force or drag force-dominates for two different The Reynolds number is given by Re ()Rv. For air and water, we can use the densities and viscosities in the table...
2) Two copper wires have the same voltage across them and the same length, but one wire has twice the diameter as the other. How much power is dissipated in the wire with twice the diameter compared to the other wire?A) 1/4 as much B) 1/2 as much C) the same amount D) twice as much E) four times as much
Question 5 [20 marks) Consider Coutte flow, which occurs when we have a fluid suspended between two parallel plates, one of which is moving and the other of which is stationary. The velocity profile between these two plates is linear. We have water between these two plates and distance separating them of 1 mm. Given this information: (a) What is the force exerted on the stationary plate per m2 if the moving plate has a velocity of 0.1 m/s in...
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