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3 years ago

How can a model be created to predict how forces affect objects at a distance?

Physics

1 answer:

olchik [2.2K]3 years ago

8 0

Answer:

Gravitational force increases as the masses of the objects increase and decreases as the distance between the objects increases. Balanced forces acting on an object cause no change in the motion of the object. When unbalanced forces act on an object, the sum of the forces is not equal to zero.

Explanation:

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Estimate the Joule-Thomson coefficient of refrigerant-134a at 0.70 MPa and 50°C. Assume the second state will be selected for a

leva [86]

Answer:

$\mu = 0.018\,\frac{^{\textdegree}C}{kPa}$

Explanation:

The Joule-Thomson coefficient is the ratio of the change of temperature to the change of pressure under isoenthalpic conditions:

$\mu = \left(\frac{\Delta T}{\Delta P}\right)_{h}$

Initial and final properties are:

$T_{1} = 50^{\textdegree}C, P_{1}=700\,kPa, h_{1}=288.54\,\frac{kJ}{kg}$ . Superheated Vapor.

$T_{2} = 48.186^{\textdegree}C, P_{2}=600\,kPa, h_{2}=288.54\,\frac{kJ}{kg}$ . Superheated Vapor.

The Joule-Thomson coefficient is approximately:

$\mu = \frac{50^{\textdegree}C-48.186^{\textdegree}C}{700\,kPa-600\,kPa}$

$\mu = 0.018\,\frac{^{\textdegree}C}{kPa}$

5 0

4 years ago

What is the distance of a car travels is its velocity is 30 mph and its time is 2 hours ?

Alborosie

Answer:

distance = 60 miles

Explanation:

3 0

2 years ago

A. I am a natural indicator. I turn my pink color to deep pink in an acid and green in a basic solution. I am …………………. B. I am a

olga nikolaevna [1]

Answer:

A. China rose

B. Methyl red

C. Phenolphthalein

Explanation:

An indicator is a substance used to detect the presence of an acid or base as characterized by the indicators color change. An indicator can either be natural or synthetic depending on whether it is obtained from naturally occurring substance (natural) or synthesized in a laboratory (synthetic).

A. China rose is a type of natural indicator that turns deep PINK or MAGENTA in the presence of an acid or GREEN in the presence of a base.

B. Methyl red is a synthetic Indicator that turns RED in the presence of an acid or YELLOW in the presence of a base.

C. Phenolphthalein is an organic dye that is originally colorless but turns PINK in the presence of a base but remains colorless in the presence of an acid or neutral substance.

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3 years ago

The practice of playing top hits several times a day on radio stations is called _____. blocking rotation circulation format dri

spin [16.1K]

The practice of playing top hits several times a day on radio stations is called rotation.

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3 years ago

Read 2 more answers

Which type of mirror would you use to cook a hot dog and why?

alexandr1967 [171]

As long as it’s a good mirror then any one of them is fine bc at the end of the day i’m getting a hot dog

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3 years ago