Which most accurately describes the path that sound travels??

A spherical piece of candy is suspended in flowing water. The candy has a density of 1950 kg/m3 and has a 1.0 cm diameter. The w

miss Akunina [59]

The question is incomplete. The complete question is :

A spherical piece of candy is suspended in flowing water. The candy has a density of 1950 kg/m3 and has a 1.0 cm diameter. The water velocity is 1.0 m/s, the water density is assumed to be 1000.0 kg/m3, and the water viscosity is 1.0x10-3 kg/m/s. The diffusion coefficient of the candy solute in water is 2.0x10-9 m2/s, and the solubility of the candy solute in water is 2.0 kg/m3. Calculate the mass transfer coefficient (m/s) and the dissolution rate (kg/s).

Solution :

From flow over sphere, the mass transfer equation can be written as :

$Sh = 2 + 0.6 Re^{1/2} Sc^{1/3}$

where, Sherood number, $Sh = \frac{K_L d}{D_{eff}}$

Reynolds number, $Re=\frac{Vd\rho}{\mu}$

Schmid number, $Sc= \frac{\mu}{\rho D_{eff}}$

So,

$\frac{K_L d}{D_{eff}}=2+0.6 \left( \frac{V d \rho}{\mu} \right)^{1/2} \ \left( \frac{\mu}{\rho D_{eff}} \right)^{1/3}$

Diameter, d = 1 cm = $1 \times 10^{-2}$ m

V = 1 m/s

$\rho = 1000 \ kg/m^3$

$\mu = 10^{-3} \ kg/m/s$

$D_{eff} = 2 \times 10^{-9} \ m^2/s$

$\frac{K_L \times 10^{-2}}{2 \times 10^{-9}}=2+0.6 \left( \frac{1 \times 10^{-2} \times 10^3}{10^{-3}} \right)^{1/2} \ \left( \frac{10^{-3}}{10^3 \times 2 \times 10^{-9}} \right)^{1/3}$

$K_L \times 5 \times 10^6=478.22$

$K_L=9.5644 \times 10^{-5}$ m/s

So the mass transfer coefficient is 9.5644 $\times 10^{-5}$ m/s. It is given solubility,

$\Delta C = 2 \ kg/m^3$

$N = Md^2 \times \Delta C \times K_L$

$N= M \times (10^{-2})^2 \times 2 \times 9.5644 \times 10^{-5}$

$N= 6 \times 10^{-8}$ kg/s (dissolution rate)

6 0

3 years ago

Westinghouse and Edison fought what was known as the war of the currents. Eventually, Westinghouse triumped using Alternating Cu

DerKrebs [107]

The answer is B! :) Hope it helped

6 0

3 years ago

Read 2 more answers

To see how two traveling waves of the same frequency create a standing wave.

WARRIOR [948]

Answer: The wave is traveling in the - x direction.

Explanation: The parameter in a wave function determines the direction of the wave is "ωt"

Where ω = angular frequency(in hertz ) and t = time taken (in seconds)

The product of ωt = 2π which is angular displacement in radian.

A negative value of the of ωt means the wave is traveling in the negative direction.

Also a positive value of sin ωt means the wave is traveling in the positive direction

7 0

3 years ago

The formula for speed is v = s/t. <br> a. True<br> b. False

crimeas [40]

If you mean S is the distance then it is true
Velocity = Distance / time

3 0

3 years ago

A heat engine is designed to do work. This is possible only if certain relationships between the heats and temperatures at the i

ryzh [129]

Answer: option D

Explanation: let us first define an heat engine.

An heat engine is that device that converts partly heat energy into mechanical energy.

Inside the heat engine is a substance that undergoes compression and expansion, intake and outtake of heat, this is known as a working substance.

For heat engines to work perfectly, the working substance has to take a substantial large amount of heat energy from a source, this source is the hot reservoir, the amount of heat energy given out by this reservoir is Qh and the temperature at this region is Th. The heat from the hot reservoir is accepted by the working substances and sent to a region that will discard it out, this region is known as the cold reservoir and the heat energy at this point is Qc and temperature is Tc.

Judging by the direction of heat flow, heat energy moves from hot reservoir to the cold reservoir for the heat engine to work perfectly fine, hence Qh must be greater than Qc and Th must be greater than Tc.

Hence Qh>Qc and Th>Tc

5 0

3 years ago

Which most accurately describes the path that sound​ travels??

Which most accurately describes the path that sound travels??