Can anyone tell me what rock this is?

viva [34]

Answer:

The correct answer is option (c) An experimental observation that the velocity of a fluid in contact with a solid surface is equal to the velocity of the surface.

Explanation

Solution:

When a fluid is in proximity to the boundary the solid and the velocities are the same or uniform for the fluid and the surface, no slip condition does not exist.

However, because the no-slip meets the expectations for gas and liquids, this condition no way connected in this case of two solid in proximity.

hence, the other options are wrong here.

6 0

3 years ago

Resolver em c as equações:<br><br> Z elevado à 2 igual a 3+4i

Marrrta [24]

Answer:

Quando um (ou todos) os outros coeficientes de uma equação do segundo grau são iguais a zero, essa equação é chamada incompleta. Neste artigo, analisaremos os métodos que podem ser usados para resolver equações incompletas, no caso em que o coeficiente C = 0, ou seja, o coeficiente é nulo.

Explanation:

Um lado da equação será a potência e outro, o número inteiro. De outro modo, transforme a equação deixando-a isolada em um dos lados. Reescreva a equação. Prepare-a a fim de extrair o logaritmo de ambos os lados, que é o inverso da potência. Você pode calcular o logaritmo de base.

3 0

2 years ago

A sphere is assumed to have the properties of water and has an initial heat generation 46480 W/m^3 How much should the heat gene

Verdich [7]

Answer:

Resulting heat generation, Q = 77.638 kcal/h

Given:

Initial heat generation of the sphere, $Q_{Gi} = 46480 W/m^{3}$

Maximum temperature, $T_{m} = 360 K$

Radius of the sphere, r = 0.1 m

Ambient air temperature, $T = 25^{\circ}C$ = 298 K

Solution:

Now, maximum heat generation, $Q_{m}$ is given by:

$T_{m} = \frac{Q_{m}r^{2}}{6K} + T$ (1)

where

K = Thermal conductivity of water at $T_{m} = 360 K = 0.67 W/m^{\circ}C$

Now, using eqn (1):

$360 = \frac{Q_{m}\times 0.1^{2}}{6\times 0.67} + 298$

$Q_{m} = 24924 W/m^{3}$

max. heat generation at maintained max. temperature of 360 K is 24924 $W/m^{3}$

For excess heat generation, Q:

$Q = (Q_{Gi} - Q_{m})\times volume of sphere, V$

where

$V = \frac{4}{3}\pi r^{3}$

$Q = (46480 - 24924)\times \frac{4}{3}\pi\0.1^{3} = 21556\times \frac{4}{3}\pi\0.1^{3} W/m^{3}$

$Q = 90.294 W$

Now, 1 kcal/h = 1.163 W

Therefore,

$Q = \frac{90.294}{1.163} = 77.638 kcal/h$

3 0

2 years ago

High speed increases the risk of collision because of ALL of these things EXCEPT:

Fofino [41]

Answer:

visibility is increased

3 0

2 years ago

Consider a pond that initially contains 10 million gallons of fresh water. Water containing a chemical pollutant flows into the

Ostrovityanka [42]

Answer / Explanation:

To solve this , we start by recalling the conversion principle:

Thus, dc/dt = Rate of C in - Rate of C out,

Therefore, for the number of chemical C(t) , i gram, in the pond at time (t), the rate of flow of C is modeled as:

Rate of Cin = Cin F,

Where Cin is the concentration of the chemical going in ( in this case, Cin = 2 grams per gallon), and F is the rate of flow of water into the pond (in this case, F = 5 million gallons per year). We then have that

Rate of C in = 10 million grams per year

Therefore the rate of Cout = c(t)F, where c(t) = C(t) / V is the concentration of the chemical in the pond ( here, we are assuming instant mixing). The volume, (V) of the water in the pond is 10 million gallons (we are assuming that the rate of flow of water into the pond is the same as the rate of flow out, so that the volume of water in the pond remains constant). Thus,

Rate of C out = 1/2 C(t) million grams per year.

Thus, the differential equation describing the evolution of C =

C(t) in time is: dc/dt = 10 - C/2 in millions of grams per year.

Now to plot the solution using Maple and to describe in words the effect of the variation in the incoming chemical,

we have: C(t) = 20 +ce ∧ -t/2, where c is an arbitrary constant since there was no chemical in the pond initially.

Therefore, C(t) = 0 , then C = -20

So that Q(t) = 20 ( 1 - e ∧ -t/2)

Kindly find the expression of the above statement C = C(t) below:

Note: In the diagram, Q is represented by C

Therefore, C = Q

7 0

3 years ago

Read 2 more answers