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3 years ago

Which of the following statements is true regarding the use of refrigerants?

Physics

2 answers:

Damm [24]3 years ago

5 0

B.

Refrigerants should be handled using approved equipment only.

Mandarinka [93]3 years ago

4 0

<h2>Use of Refrigerant - Option B </h2>

Recover and recycle refrigerant using epa-approved equipment. Refrigerants must be examined by utilizing just guaranteed material. A refrigerant is a thing or blend which is generally a liquid that utilized in a warmth pump and preservation period.

In most periods, it supports phase transformations from a liquid to a gas and repeated. Several moving liquids have been utilized for such goals.

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Read 2 more answers

Captain Jack Sparrow has been marooned on an island in the Atlantic by his crew, and decides to builda raft to escape. The wind

Marianna [84]

Answer:

d₃ = 37,729 km, θ= 5.1º North of West

Explanation:

This is a velocity addition problem, the easiest way to solve it is to decompose the velocities in a Cartesian system, the x-axis coincides with the West-East direction and the y-axis with the South-North direction

* first displacement is

d₁ₓ = 11 km

* second offset is

cos 6 = d₂ₓ / d₂

sin 6 = d_{2y} / d₂

d₂ₓ = d₂ cos 6

d_{2y} = d₂ sin 6

d₂ₓ = 6 cos 6 = 5.967 km

d_{2y} = 6 sin 6 = 0.6272 km

* third displacement is unknown

* fourth and last displacement

cos (-11) = d₄ₓ / d₄

sin (-11) = d_{4y} / d₄

d₄ₓ = d₄ cos (-11)

d_{4y} = d₄ sin (-11)

d₄ₓ = 21 cos (-11) = 20.61 km

d_{4y} = 21 sin (-11) = -4.007 km

They tell us that at the end of the tour you are back on the island, so the displacement must be zero

X axis

x = d₁ₓ + d₂ₓ + d₃ₓ + d₄ₓ

0 = 11 +5.967 + d₃ₓ + 20.61

d₃ₓ = -11 - 5.967 - 20.61

d₃ₓ = -37.577 km

Y axis

y = d_{1y} + d_{2y} + d_{3y} + d_{4y}

0 = 0 + 0.6272 + d_{3y} -4.007

d_{3y} = 4.007 - 0.6272

d_{3y} = 3.3798 km

This distance can be given in the form of module and angle

Let's use the Pythagorean theorem for the module

d₃ = $\sqrt{d_{3x}^2 + d_{3y}^2}$

d₃ = $\sqrt{37.577^2 + 3.3798^2}$

d₃ = 37,729 km

Let's use trigonometry for the angle

tan θ = d_{3y} / d₃ₓ

θ = tan⁻¹ $\frac{d_{3y}}{d_{3x}}$

θ = tan-1 (-3.3798 / 37.577)

θ = 5.1º

Since the y coordinate is positive and the x coordinate is negative, this angle is in the second quadrant, so the direction given in the form of cardinal coordinates is

θ= 5.1º North of West

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2 years ago

When a particle is a distance r from the origin, its potential energy function is given by the equation U(r)=kr, where k is a co

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Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.

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3 years ago