what is the primary function of a refrigerant distributor at the outlet of a thermostatic expansion valve? what is the primary function of a refrigerant distributor at the outlet of a thermostatic expansion valve? allow the evaporator to operate with a proper superheat feed the evaporator sufficient liquid to control the leaving air temperature decrease the pressure drop across the evaporator coil evenly feed each evaporator circuit

Answer:

A

Explanation:

Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula. ... Small particles drew together, bound by the force of gravity, into larger particles.

The Sun consists primarily of gases least supports the theory that gravity helped form our solar system.

The Solar System can be defined as the gravitationally bound system of the Sun and the objects that orbit it. Our solar system is formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud. The vast majority of the mass is in the Sun, with most of the rest mass contained in the planet Jupiter.

The four giant planets of the solar system are substantially larger and extremely massive than the terrestrials planets. Jupiter and Saturn, are gas giants, being made of mainly of hydrogen and helium.

The initial molecular cloud was several light-years across and probably birthed several stars. It consisted mostly of hydrogen, with some helium, and little amounts of heavier elements fused by generations of stars.

This region would become the Solar System, called as the pre-solar nebula collapsed, conservation of angular momentum caused it to rotate.

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(3)False:a net force causes no change in an object's motion

(4)True: If Manuel exerts a force of 10 N to push a desk to the rigth at the same tiem Lynn exerts a force of 15 n to push the desk to the left , the desk will move to the left

Explanation

Step 1

(3)

Force is a push or pull on an object that produces acceleration in the body on which it acts

Newton's second law states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

therefore, the answer is

False a net force causes no change in an object's motion

Step 2

(4)

a) Diagram:

to find the net force, add the vectos( let positive to the rigth)

as the net force is negative,object willmove to the left,so

the answer is

True: If Manuel exerts a force of 10 N to push a desk to the rigth at the same tiem Lynn exerts a force of 15 n to push the desk to the left , the desk will move to the left

I hope this helps you

Force applied is directly proportional to displacement.

It is given by the formula

Here F is the force , k is the spring constant , x is the displacement.

Substituting the values,

The direction of the current in the current-carrying wire that produces the field indicated in the figure is given below.

Conventionally, a positive charge would go in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart. Indeed, electrons would go in the reverse direction across the cables.

According to Fleming's right-hand rule gives which direction the current flows. The right hand is held with thumb, index finger & middle finger mutually perpendicular to each other. The thumb is pointed in direction of motion to magnetic field of conductor relative to magnetic field.

(A) from right hand rule direction of current is towards left.

(B) Out of the Screen.

(C) Lower left to upper right.

According to Fleming's Right Hand Rule, if the thumb, forefinger, and middle finger are arranged in a straight line on the right hand, the thumb will point in the direction of the conductor's motion in relation to the magnetic field, the forefinger will point in the direction of the magnetic field, and the middle finger will point in the direction of the induced current.

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Full Question ;

Consider the following figures. Determine the direction of the current in the current-carrying wire that produces the field indicated in the figure. (a) * * * * * * * * * * * Bin * O out of the screen O into the screen O toward the left toward the right toward the top of the screen toward the bottom of the screen (b) O out of the screen O into the screen O toward the left toward the right O toward the top of the screen toward the bottom of the screen (C) * * * * O out of the screen into the screen lower right to upper left lower left to upper right upper right to lower left upper left to lower right

The maximum mass that plate B can have such that it does not slide down the plane is 4.708 kg.

Frictional Force:

Friction is the force that stops motion when the surfaces of two things come into contact. In other words, friction reduces the mechanical advantage of a machine and lowers the output to input ratio. One-fourth of the energy used by a car is used to reduce friction. However, the vehicle's capacity to hold its position on the road is also influenced by friction in the clutch and the tires. Friction, a phenomenon that has an impact on everything from machines to molecular structures to matches, is one of the most significant phenomena in the physical world.

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Explanation:

hope it is helpful to you

Hey there!

Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunlight, so we eat plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae, and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the green pigment found in the chloroplasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.

Hope this helps!

Have a great day! :)

Yes, the static value of the DC supply impact the output of the DC sweep. When using sweeps, the simplest sweep type is the DC sweep.

DC stands for Direct Current, which refers to the flow of electric charge in a circuit in one direction only. Unlike AC (alternating current) which changes direction periodically, DC maintains a constant polarity and magnitude. DC can be generated from batteries, solar cells, and some types of power supplies.

DC has several applications in physics and engineering, including powering electronic devices, electric motors, and electroplating. It is also used in telecommunications and computing, where digital signals are transmitted using on-off voltage signals. The behavior of DC circuits is described by Ohm's law, which states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance of the conductor.

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The place of a north equatorial current is taken by the Monsoon Current. There is, however, an South Equatorial Current.

The South Equatorial Currents are ocean currents in the Pacific, and Atlantic, loose westerly with the trades north of latitude 22° S, it divides to form the East Africa Coastal Current, operating northward, and a south-flowing stream. correctly, equatorial-current systems comprise two westward-flowing currents approximately 600 miles

The North Equatorial Current (NEC) is a westward wind-driven current mostly detected near the equator, but the location varies from dissimilar oceans. Trade winds drive both North and South Equatorial Currents westward, thus conveying warm ocean-surface waters in that direction.

So we can conclude that The South Equatorial Current is a broad, westward flowy current that extends from the surface.

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Answer:

1200 kg?

Explanation:

The critical angles for red and violet light through diamond are 24.5° and 24.0°, respectively.

The incidence on incidence at which the refraction angles equals 90 degrees is known as that of the critical angle. The polarization di incident light and the light beam bends in the direction of normal when it enters a thicker environment from a similarly rarer medium.

The critical angle is the angle of impact that provides a 90-degree angle of refraction. Keep in mind that an angle of impact value is how the angle of inclination is defined. For water-air borders and crown glass-water borders, the angle of inclination would be 48.6 degrees and 61.0 degrees, respectively.

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If me and my friend are looking at the diagram, I am right because letter A is the amplitude and letter B is the wavelength.

The amplitude is usually of two types. They are:

In a peak amplitude, the distance between crest and trough of a wave is measured. In a semi amplitude the distance between the peak and equilibrium is taken.

Wavelength of a wave is the distance between either two successive crests or two successive troughs.

λ = v / f

λ = Wavelength

v = Velocity

f = Frequency

Therefore, the letter A is the amplitude and letter B is the wavelength.

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The hot air inside a hot air balloon is less dense than the surrounding air, which is why the balloon floats. The amount of lift generated by the balloon depends on the difference in density between the hot air and the surrounding air.

The hotter the air inside the balloon, the less dense it will be, and the more lift it will generate. To calculate the temperature of the air inside the balloon, we need to know the mass of the balloon and its basket, the volume of the balloon, and the density of the surrounding air. We can then use the following equation:

Lift = (Mass of air in balloon) * (Density of surrounding air - Density of hot air)

The mass of the air in the balloon is equal to the mass of the balloon and its basket. The density of the surrounding air can be found in a table of physical properties. The density of the hot air depends on its temperature.

Solving for the temperature of the hot air, we get:

Temperature = (Density of surrounding air - Lift / Mass of air in balloon) * Density of air

Temperature = (1.225 kg/m^3 - 240 kg / 3200 m^3) * 1.225 kg/m^3

Temperature = 60 degrees Celsius

Therefore, the air inside the balloon would have to get to 60 degrees Celsius in order for the balloon to lift off the ground.

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When a car accelerates from 15 m/s to 60 m/s in 30 seconds, the acceleration of the car is 1 meter/second².

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Given parameters:

Initial speed: u = 15 m/s.

Final speed: v = 60 m/s.

Time interval: t = 30 seconds.

Then, according to definition of acceleration,

Acceleration of the car = change in speed/ time interval

= ( final speed - initial speed)/time interval

= ( 60 m/s - 30 m/s)/30 seconds

= 1 meter/second²

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The magnitude of the magnetic field produced by the current at a distance of 3.3 cm from the wire is roughly 1.21 107 T when using the exact formula and approximately 6.06 107 T.

To calculate the magnitude of the magnetic field made by the current at a location 3.3 cm from the wire, we can use both the exact formula and the approximate formula.
Exact formula:
The exact formula to calculate the magnetic field created by a current-carrying wire is given by the Biot-Savart Law:
B = (μ₀ * I) / (2π * r)
where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), I is the current, and r is the distance from the wire.
Plugging in the given values:
B = (4π × 10⁻⁷ T·m/A * 0.8 A) / (2π * 0.033 m)
Simplifying:
B = (8π × 10⁻⁸ T·m) / (2π * 0.033 m)
B = (4 × 10⁻⁸ T·m) / (0.033 m)
B ≈ 1.21 × 10⁻⁷ T
Approximate formula:
For small distances from the wire, an approximate formula can be used. It states that the magnetic field is inversely proportional to the distance from the wire:
B ≈ (μ₀ * I) / (2 * π * r)
Plugging in the given values:
B ≈ (4π × 10⁻⁷ T·m/A * 0.8 A) / (2 * π * 0.033 m)
Simplifying:
B ≈ (8π × 10⁻⁸ T·m) / (2 * π * 0.033 m)
B ≈ (4 × 10⁻⁸ T·m) / (0.066 m)
B ≈ 6.06 × 10⁻⁷ T
So, the magnitude of the magnetic field created by the current at a location 3.3 cm from the wire is approximately 1.21 × 10⁻⁷ T using the exact formula and approximately 6.06 × 10⁻⁷ T using the approximate formula.

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Answer:

Explanation:Understandably, students have a strong tendency to interpret reality only according to the way it is perceived from their own perspective. This has implications for their understandings of ideas that represent objects on a very large scale like the solar system. They observe the world from their own place on a very small region of the Earth. They often find it difficult to comprehend distances in the order of their own country and consequently larger distances like those involved with the solar system are often unimaginable for them. In addition, students observe motion from their own point of reference. In order to understand the motion of the sun and Earth they must imagine a different point of reference. This can make ideas in this area very challenging for students to grasp.

Research: Nussbaum (1985)

The views held by students about the shape of the Earth are varied and often unique to the individual. Even though students can often articulate that the Earth is a sphere, upon further investigation they often believe in fact that the Earth is how they perceive it, flat. Some children view the Earth as round or circular as opposed to spherical (see diagram 1 below). Another common view is of the Earth as flat and that it and the air form a sphere (see diagram 2 below). Students can often represent the Earth as a sphere (or circle on the plane of the paper) but they still perceive the person on the top of the sphere as the upright person (see diagram 3 below).

Diagram 1:

The view is that the Earth is a circular disc floating in the atmosphere. A person standing on a flat horizontal circular disk.

Diagram 2:

The view that the air and Earth form equal hemispheres and the observer is located centrally. A person standing on a hemisphere representing the ground.

Diagram 3:

The final momentum of the ball after collision is 13 kg.m/s.

The given parameters;

Let the final momentum of the ball after collision = P₄

Apply the principle of conservation of linear momentum to determine the final momentum of the ball after collision;

total momentum before collision = total momentum after collision

P₁ + P₂ = P₃ + P₄

15 + 3 = 5 + P₄

18 = 5 + P₄

18 - 5 = P₄

13  = P₄

Thus, the final momentum of the ball after collision is 13 kg.m/s.

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The root-mean-square (rms) voltage (Vrms) of a source is the effective voltage value that corresponds to the average power delivered by the source.

To determine the rms voltage of a source, you need to have the values of the instantaneous voltage over a complete cycle of the AC waveform. By squaring each instantaneous voltage value, calculating their average, and taking the square root of the result, you can find the rms voltage.

For example, if you have a sinusoidal AC voltage waveform with a peak voltage of Vpeak, the rms voltage (Vrms) can be calculated using the following formula:

Vrms = Vpeak / √2

Here, √2 is a constant value derived from the mathematical properties of sinusoidal waveforms.

The rms voltage is essential because it represents the equivalent steady DC voltage that would produce the same power or heating effect in a resistive circuit. It is commonly used to describe the voltage levels of AC power sources, electrical signals, and the voltage requirements of electrical devices.

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The correct answer is 378000 km.

The speed of light is the rate at which light waves move through distinct substances. In instance, it has now been established that the speed of light in a vacuum is 299,792,458 metres per second.

Using the equation

distance = speed × time,

the total distance travelled is calculated.

Consequently, the overall distance travelled is

Distance = ( 3.00 × 10^8 m/s ) ( 2.52 )

= 756000000 m

The total distance travelled divided by two determines the distance between the Earth and the Moon.

Distance between earth to moon = 756000000/2

= 378000000 meters

= 378000 km.

Approximately 384 thousand kilometres separate the Earth and the Moon.

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Answer:

can be called kinetic or potential energy

Explanation:

1000 calories is not sufficient; it is 172 calories short. The basal energy rate for the patient is 1702 calories, meaning that 1000 calories is 172 calories short of what he needs to maintain his body temperature and basic life processes.

Calories are a unit of energy that are found in food and beverages. They provide the body with energy to perform daily activities and are essential to our health. Calories are found in carbohydrates, proteins, fats, and alcohol. Generally, foods and beverages that are high in calories are high in fat, sugar, and/or alcohol. Eating too many calories can lead to weight gain and increased risk for chronic diseases such as diabetes, heart disease, and cancer. On the other hand, not getting enough calories can lead to malnutrition, fatigue, and other health problems. To maintain a healthy weight, it is important to eat a balanced diet that is low in calories and high in nutrient-rich foods such as fruits, vegetables, whole grains, and lean proteins.

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The values of all sub-parts have been obtained.

(a).  The frequency observed by the woman is approximately 442 Hz.

(b).  The ambulance needs to travel with a speed of approximately 41 m/s for the woman to hear the siren at an apparent frequency of 421 Hz.

(c).  The frequency that the woman would hear when the siren moved away from her with a speed of 41 m/s is approximately 315 Hz.

As per data:

Siren frequency (f) = 400 Hz,

Ambulance speed (v) = 28.5 m/s,

Speed of sound (c) = 343 m/s

(a). Frequency observed by the woman:

(fa) = f + (v/c) × f

     = (343 + 28.5)/343 × 400

     = 441.65 Hz

     ≈ 442 Hz

Therefore, the frequency observed by the woman is approximately 442 Hz.

(b). Apparent frequency of siren:

(fa) = f × [(c+v)/c]

     = 421 Hz,

f = 400 Hz Let's calculate the speed (v) of the ambulance.

The value of v = c × (fa/f) - c

                        = 343 × (421/400) - 343

                        = 41.05 m/s

                        ≈ 41 m/s

Therefore, the ambulance needs to travel with a speed of approximately 41 m/s for the woman to hear the siren at an apparent frequency of 421 Hz.

(c). Frequency observed when the siren moved away from the woman with speed v = 41 m/s is given by

fa = f × [(c-v)/c]

   = 400 × (343-41)/343

   = 314.5 Hz

   ≈ 315 Hz

Therefore, the frequency that the woman would hear when the siren moved away from her with a speed of 41 m/s is approximately 315 Hz.

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Answer:

???????????????????????????????????????

Explanation:

Answer:

q r s t u v w x y z

Explanation:

Answer:

12 m/s

Explanation:

Given data

Mass m= 1500kg

intitial velocity u= 20m/s

force F= 6000N

time t= 2 seconds

Required

The final velocity v

From

Ft= mΔv

Ft= m(u-v)

substitute

6000*2= 1500(20-v)

solve for v

12000= 30000- 1500v

collect like terms

12000-30000= -1500v

-18000= -1500v

divide both sides by  -1500v

v= 18000/1500

v=12 m/s

Hence the velccity is 12 m/s

Answer:

there are two way to get mate  and i gave them sepaert explation

Explanation:

55

N

Explanation:

Using Newton's second law of motion:

F

=

m

a

Force=mass

×

acceleration

F

=

25

×

2.2

F

=

55

N

So 55 Newtons are needed.

Answer link

Nam D.

Apr 6, 2018

55

N

Explanation:

We use Newton's second law of motion here, which states that,

F

=

m

a

m

is the mass of the object in kilograms

a

is the acceleration of the object in meters per second

F

=

25

kg

⋅

2.2

m/s

2

=

55

N

The net external force which is required to give a 25kg suitcase an acceleration of 2.2 m/s² to the right is 55N (Newton).

The net external force is the vector sum of all the forces which is acting on a system from outside of the system. There may be multiple external forces which are acting on a body or a system of bodies however there will be only one net external force which is the result of all those external forces which are acting on that body or system.

The net external force on the suitcase can be calculated with the formula:

f = m × a

where, f = net external force on the object,

m = mass of the object,

a = acceleration of the object

m = 25 kg

a = 2.2m/s²

f = 25 kg × 2.2 m/s²

F = 55N (Newton)

The net external force is required to have 55N.

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Answer: False

Explanation:

Yes, it is true that all modern nuclear power plants use water. This is because water is an excellent coolant and can absorb a lot of heat energy. However, there are some disadvantages to using water in nuclear power plants, particularly the high pressure under which the water must operate.

The water in a nuclear power plant is used to transfer heat from the reactor to the steam turbine. This heat transfer occurs at very high pressures and temperatures. The water is heated to over 500 degrees Celsius and must operate at pressures of over 150 times atmospheric pressure. This high pressure and temperature puts a lot of stress on the water and the components of the power plant.
One of the main disadvantages of using water in a nuclear power plant is that the high pressure and temperature can cause corrosion and erosion of the pipes and other components. This can lead to leaks and other failures that can compromise the safety and efficiency of the power plant.
However, heating water to high pressures also ties into the efficiency of the power plant. The higher the pressure and temperature, the more heat energy can be transferred from the reactor to the steam turbine. This means that the power plant can generate more electricity for a given amount of fuel. Therefore, it is important to maintain the high pressure and temperature to ensure that the power plant is operating efficiently.
Regarding the safety of the power plant, the high pressure and temperature of the water can pose some risks. If there is a leak or failure in the system, the high-pressure water can escape and cause damage to the surrounding area. Additionally, the high temperature of the water can pose a risk of thermal burns or injuries to workers who are working on the system. Therefore, it is important to have strict safety protocols in place to prevent accidents and minimize risks.

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All human cells contain mitochondria, which function as the cell's main "power generator" by transforming energy from food into a form the cell can use. Mitochondria are found in the cytoplasm of all human cells.

How do a generator and a mitochondria compare?

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