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3 years ago

A physical property is

Physics

1 answer:

Elis [28]3 years ago

5 0

Answer:

One that we describe using our 5 senses

Explanation:

A physical property describes something we can physically observe.

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Water flows steadily through a fire hose and nozzle. The hose is 78 mm inside diameter, and the nozzle tip is 20 mm I.D.; water

IgorC [24]

Answer:

The reaction force is 2.776kN as the force is negative and on the left of the Control Volume this indicates that the coupling in in tension.

Explanation:

By applying the continuity equation as

$A_1V_1=A_2V_2\\$

By simplifying the equation

$V_1=V_2(\frac{D_2}{D_1})^2$

Here

V_2=43 m/2

D1=78 mm

D2=20 mm

So the velocity is given as

$V_1=V_2(\frac{D_2}{D_1})^2\\V_1=2.827 m/s$

Now by applying the equation of momentum in x direction

$R_x=-P_{1g}A_1+\rho V_1^2A_1-\rho V_2^2A_2$

Here

P1g is given as 427 kPa

A1 is given by $\pi D_1^2/4=\pi (78/1000)^2/4=0.00477 m^2$

ρ is the density of water given as 1000 kg/m3
V1 is calculated above as 2.827 m/s
V2 is given as 42 m/s

A2 is given by $\pi D_2^2/4=\pi (20/1000)^2/4=0.00031 m^2$

Substituting the values in the equation gives

$R_x=-P_{1g}A_1+\rho V_1^2A_1-\rho V_2^2A_2\\R_x=-(470 \times 10^3)(0.00477)+(1000) (2.827)^2(0.00477)-(1000) (43)^2(0.00031)\\R_x=-2776.96 N$

So the reaction force is 2.776kN as the force is negative and on the left of the Control Volume this indicates that the coupling in in tension.

5 0

4 years ago

On the continuum of traditional dramatic outcomes, what is the opposite of death? life birth love marriage

SCORPION-xisa [38]

<span>The correct answer is "birth." On the continuum of traditional dramatic outcomes, the opposite of death is birth. Birth is when we start to feel the world in our whole sense. It is the time where we are brought to world because of life. But life has an end. That is where death comes in. It marks the final stage of life.</span>

8 0

3 years ago

Read 2 more answers

Select all that apply.

ryzh [129]

Answer:

All of above.

Explanation:

6 0

3 years ago

The metal with the highest melting temperature is tungsten which melts at around 3400 K. What is the wavelength of the peak of t

alekssr [168]

Explanation:

It is given that, the metal with the highest melting temperature is tungsten which melts at around 3400 K, T = 3400 K

We need to find the wavelength of the peak of the black body distribution for this temperature. It can be calculated using Wein's displacement law as :

$\lambda\times T=k$

k is the constant, $k=2.89\times 10^{-3}\ m.k$

$\lambda=\dfrac{k}{T}$

$\lambda=\dfrac{2.89\times 10^{-3}\ m.k}{3400\ k}$

$\lambda=8.5\times 10^{-7}\ m$

$\lambda=850\ nm$

The wavelength of infrared is from 700 nm to 1 mm. So, the lies in infrared region of the spectrum. Hence, this is the required solution.

7 0

3 years ago

Assume a current of 1 ampere enters a parallel circuit at Point A. This 1 ampere of current will ________________ between Resist

kow [346]

If a current of 1 ampere enters a parallel circuit at Point A. This 1 ampere of current will divide between Resistors R1 and R2 and then recombine at Point B

<h3>Parallel circuit</h3>

A parallel circuit is a circuit with separate branches with a common endpoint. In a parallel circuit, the voltage across each branch is the same but the currents vary. The total current is the sum of the currents flowing through each component.

If a current of 1 ampere enters a parallel circuit at Point A. This 1 ampere of current will divide between Resistors R1 and R2 and then recombine at Point B.

Find out more on Parallel circuit at: brainly.com/question/80537

5 0

2 years ago