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4 years ago

15

A sealed, rigid vessel of 2 m3 contains a saturated mixture of liquid and vapor R-134a at 10C. If it is heated to 50 C, the liqu

id phase disappears. Find the pressure at 50 C and the initial mass of the liquid.

1 answer:

Iteru [2.4K]4 years ago

8 0

Answer: 93.30kg

Explanation:

in the attachment

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What are the functions of each computer program

Ludmilka [50]

A function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code reusing. ... Different programming languages name them differently, for example, functions, methods, sub-routines, procedures, etc.

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3 years ago

The drag coefficient of a car at the design conditions of 1 atm, 25°C, and 90 km/h is to be determined experimentally in a large

SIZIF [17.4K]

Answer: 0.288

Explanation:

Given

Pressure of the car, P = 1 atm

Temperature of the car, T = 25° C

Speed of the car, v = 90 km/h = 90*1000/3600 = 25 m/s

Height of the car, h = 1.25 m

Width of the car, b = 1.65 m

Force acting on the far, F = 220 N

Drag coefficient, C(d) = ?

Using our table A-9, we can trace that the density of air ρ, at the given temperature and pressure of 25 °C and 1 atm, is 1.184 kg/m³

Area = h *b

Area = 1.25 * 1.65

Area = 2.0625 m²

Now we solve for the drag coefficient using the formula

C(d) = F / (1/2 * ρ * A * v²)

C(d) = 220 / (0.5 * 1.184 * 2.0625 * 25²)

C(d) = 220 / (1.221 * 625)

C(d) = 220 / 763.125

C(d) = 0.288

Therefore, the drag coefficient is 0.288

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3 years ago

A Venturi meter (see below) uses the principles of the Bernoulli equation to measure the velocity of a flow in a reactor system.

LenaWriter [7]

Answer:

Q=0.000604 m³/s

Explanation:

Given that

d₁=5 cm

d₂=1 cm

P= 30 KPa

Density of water ,ρ=1000 kg/m³

As we know that volume flow rate Q given as

$Q=A_1A_2\sqrt{\dfrac{\dfrac{2\Delta P}{\rho}}{A_1^2-A_2^2}}$

$A_1=\dfrac{\pi}{4}\times 0.05^2\ m^2$

A₁=0.0019 m²

$A_2\dfrac{\pi}{4}\times 0.01^2\ m^2$

A₂=0.000078 m²

$Q=0.0019 \times 0.000078 \sqrt{\dfrac{\dfrac{2\times 30\times 1000}{1000}}{0.0019^2-0.000078^2}}\ m^3/s$

Q=0.000604 m³/s

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3 years ago

Describe the testing process you might use for a new tablet operating system.

rusak2 [61]

Answer:

You may execute some or all Test Cases based on the requirement in all versions of Mobile that is 2g, 3g, and 4g. Tablets and smartphones have special operating-system needs.

Explanation:

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3 years ago

The horizontal component of acceleration, ay during a projectile motion is usually assumed to be_________ a)-9.81 m/s^2 b)-Zero

Alenkinab [10]

Answer:

b) zero

Explanation:

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3 years ago