FERMI PROBLEM. Estimate the surface area of a sunflower. Please make all assumptions you make clear.
FERMI PROBLEM. Estimate the surface area of a sunflower. Please make all assumptions you make clear.
Homework Answers
It is best to assume that sunflower has disk shape. Hence its
surface area is 
considering one side and 
considering both side. Here R is radius of sunflower.
I will be glad to see your comment if you have any query and thumb up if you are satisfied. Thanks...
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FERMI PROBLEM. Estimate the surface area of a sunflower. Please
make all assumptions you make clear.
FERMI PROBLEM. how many eucalyptus trees would you need to cover the area of a medium...
FERMI PROBLEM. how many eucalyptus trees would you need to cover the area of a medium sized farm, if each tree cannot be closer than 1m to any other tree. I am using the assumption that the farm is a square with sides that are 1000m. Also that the trees are 7m long (without the extra meter)
please list assumptions, show work, and explain your reasoning carefully! please don't forget all this thanks...
please list assumptions, show work, and
explain your reasoning carefully! please don't forget all this
thanks
1. A tank contains water (20°C) at the initial height ho, the area of the water surface is Ar, the water flow from the bottom at a speed of v(t), the exit area is Aex- (a) Find the function of height h(t). (10 points) At hit) (b) Estimate the time t when all the water runs out. (10 points)
1) problem solution MUST include a clear, labeled schematic diagram. 2) All assumptions must be clearly...
1) problem solution MUST include a clear, labeled
schematic diagram.
2) All assumptions must be clearly stated.
4) Calculations and UNITS must be included
17.28 Radioactive waste is stored in a cylindrical stainless- steel container with inner and outer diameters of 1 m and 1.2 m respectively, so that Ro -0.5 m and Ri -0.6 m. Thermal energy is generated uniformly within the waste material at a volumetric rate of 2 x 105 W/m3. The outer container surface is exposed...
Please help me answer this quick! 1 Estimate the surface area of the Earth facing the...
Please help me answer this quick!
1 Estimate the surface area of the Earth facing the Sun (in meters2). 2 Estimate how much power reaches the Earth's surface (in Watts). 3 Estimate how much solar energy reaches the earth in one year (in Joules). 4 What is the current annual world consumption of energy in one year (in Joules)? 5 What is the ratio of the energy delivered by the sun to the energy consumed by humans?
Could you please provide a clear and detailed worked solution to the following problem. Please make...
Could you please provide a clear and detailed worked solution to
the following problem. Please make it clear which formulas you have
used. Thank you.
There is an object with some forces acting on it. Through its centre of gravity at (0, 0, 0) there is a force of size and direction (1, 1, 1) Through (1, 1, 1) there is a force (-1,-1,0) Through (0, 0, 1) there is a force (2,2,0) Through (0, 1, 0) there is a...
Estimate how many electrons are in the average human. Make any assumptions you feel are necessary,...
Estimate how many electrons are in the average human. Make any assumptions you feel are necessary, but clearly state what they are. What is the total negative charge of an average human?
Problem 5. We want to make a Schottky diode on one surface of an n-type semiconductor, and an ohm...
Problem 5. We want to make a Schottky diode on one surface of an n-type semiconductor, and an ohmic contact on the other side. The electron affinity is 5 eV, bandgap is 1.5 eV, and the Fermi potential (the difference between the Fermi level Ef and the intrinsic level Ei) is 0.25 eV d the values of the work functions of the two metals be? (Give your answer as greater than or less than certain values.) Sketch the band diagram...
solve the problem with the assumptions please H07.3 V-15 mi's Area = 0.3 m Arealm 15...
solve the problem with the assumptions please
H07.3 V-15 mi's Area = 0.3 m Arealm 15 ms Water flows as two free jets from the tee attached to the pipe shown in the figure. The exit speed is 15 m/s. If viscous effects and gravity are negligible, determine a) the inlet velocity in the pipe at ? Governing Equation: Area = 0.5 m Assumptions & Solution: b) the pressure at ? Governing Equation: Assumptions & Solution: c) the x and...
please show all work, thank you in advance! Find the exact area of the surface obtained...
please show all work, thank you in advance!
Find the exact area of the surface obtained by rotating the curve about the x-axis. 72 y = sin , Os x 5 6 Preview
Could you please provide a clear and detailed worked solution to the following problem. Please make...
Could you please provide a clear and detailed worked solution to
the following problem. Please make it clear which formulas you have
used. Thank you.
There is an object with some forces acting on it. Through the centre of gravity at (0, 0, 0) there is a force of size and direction (1, 1, 1). Through (1, 1, 1) there is a force (-1,-1,0) Through (0, 0, 1) there is a force (2,2,0) Through (0, -0.5, 0) there is a...
please list assumptions, show work, and
explain your reasoning carefully! please don't forget all this
thanks
1. A tank contains water (20°C) at the initial height ho, the area of the water surface is Ar, the water flow from the bottom at a speed of v(t), the exit area is Aex- (a) Find the function of height h(t). (10 points) At hit) (b) Estimate the time t when all the water runs out. (10 points)
1) problem solution MUST include a clear, labeled
schematic diagram.
2) All assumptions must be clearly stated.
4) Calculations and UNITS must be included
17.28 Radioactive waste is stored in a cylindrical stainless- steel container with inner and outer diameters of 1 m and 1.2 m respectively, so that Ro -0.5 m and Ri -0.6 m. Thermal energy is generated uniformly within the waste material at a volumetric rate of 2 x 105 W/m3. The outer container surface is exposed...
Please help me answer this quick!
1 Estimate the surface area of the Earth facing the Sun (in meters2). 2 Estimate how much power reaches the Earth's surface (in Watts). 3 Estimate how much solar energy reaches the earth in one year (in Joules). 4 What is the current annual world consumption of energy in one year (in Joules)? 5 What is the ratio of the energy delivered by the sun to the energy consumed by humans?
Could you please provide a clear and detailed worked solution to
the following problem. Please make it clear which formulas you have
used. Thank you.
There is an object with some forces acting on it. Through its centre of gravity at (0, 0, 0) there is a force of size and direction (1, 1, 1) Through (1, 1, 1) there is a force (-1,-1,0) Through (0, 0, 1) there is a force (2,2,0) Through (0, 1, 0) there is a...
Problem 5. We want to make a Schottky diode on one surface of an n-type semiconductor, and an ohmic contact on the other side. The electron affinity is 5 eV, bandgap is 1.5 eV, and the Fermi potential (the difference between the Fermi level Ef and the intrinsic level Ei) is 0.25 eV d the values of the work functions of the two metals be? (Give your answer as greater than or less than certain values.) Sketch the band diagram...
solve the problem with the assumptions please
H07.3 V-15 mi's Area = 0.3 m Arealm 15 ms Water flows as two free jets from the tee attached to the pipe shown in the figure. The exit speed is 15 m/s. If viscous effects and gravity are negligible, determine a) the inlet velocity in the pipe at ? Governing Equation: Area = 0.5 m Assumptions & Solution: b) the pressure at ? Governing Equation: Assumptions & Solution: c) the x and...
please show all work, thank you in advance!
Find the exact area of the surface obtained by rotating the curve about the x-axis. 72 y = sin , Os x 5 6 Preview
Could you please provide a clear and detailed worked solution to
the following problem. Please make it clear which formulas you have
used. Thank you.
There is an object with some forces acting on it. Through the centre of gravity at (0, 0, 0) there is a force of size and direction (1, 1, 1). Through (1, 1, 1) there is a force (-1,-1,0) Through (0, 0, 1) there is a force (2,2,0) Through (0, -0.5, 0) there is a...
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