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Firlakuza [10]
3 years ago
15

Water can form large dewdrops in nature how would droplets made of vegetable oil instead of water be different

Physics
2 answers:
Jlenok [28]3 years ago
6 0

Answer:

d

Explanation:

>3

Natasha2012 [34]3 years ago
3 0

Answer:d

Explanation: oil would form droplets but only tiny ones because it’s surface tension is lower than that of water

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saveliy_v [14]

Answer:

It is correct

Explanation:

8 0
3 years ago
Find the shear stress and the thickness of the boundary layer (a) at the center and (b) at the trailing edge of a smooth flat pl
melomori [17]

Answer:

a) The shear stress is 0.012

b) The shear stress is 0.0082

c) The total friction drag is 0.329 lbf

Explanation:

Given by the problem:

Length y plate = 2 ft

Width y plate = 10 ft

p = density = 1.938 slug/ft³

v = kinematic viscosity = 1.217x10⁻⁵ft²/s

Absolute viscosity = 2.359x10⁻⁵lbfs/ft²

a) The Reynold number is equal to:

Re=\frac{1*3}{1.217x10^{-5} } =246507, laminar

The boundary layer thickness is equal to:

\delta=\frac{4.91*1}{Re^{0.5} }  =\frac{4.91*1}{246507^{0.5} } =0.0098 ft

The shear stress is equal to:

\tau=0.332(\frac{2.359x10^{-5}*3 }{1}  )(246507)^{0.5} =0.012

b) If the railing edge is 2 ft, the Reynold number is:

Re=\frac{2*3}{1.215x10^{-5} } =493015.6,laminar

The boundary layer is equal to:

\delta=\frac{4.91*2}{493015.6^{0.5} } =0.000019ft

The sear stress is equal to:

\tau=0.332(\frac{2.359x10^{-5}*3 }{2}  )(493015.6^{0.5} )=0.0082

c) The drag coefficient is equal to:

C=\frac{1.328}{\sqrt{Re} } =\frac{1.328}{\sqrt{493015.6} } ==0.0019

The friction drag is equal to:

F=Cp\frac{v^{2} }{2} wL=0.0019*1.938*(\frac{3^{2} }{2} )(10*2)=0.329lbf

7 0
3 years ago
What will create static electricity?
frosja888 [35]

Answer:

Friction between two objects causes a transfer of electrons from one object to the other.

Explanation:

3 0
3 years ago
how much force does it take to push a 62.0 kg dresser at a constant speed across a carpet with µk=0.238. (unit=N)
Mama L [17]

Answer:

158.76504N

Explanation:

F = µk * m * g

F = 0.238 * 62 * 9.81

F = 158.76504N

3 0
4 years ago
Read 2 more answers
You have a rock with a density of 12 g/cm3 and a volume of 5c m3. What is its mass?
OverLord2011 [107]

Answer:

60 grams

Explanation:

Mass=density x volume

3 0
3 years ago
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