Distinguish the difference between parallel and
counter flow heat exchanger?

Answer:

Three (3).

Explanation:

The octet rule is a rule in chemistry that states that, chemical elements would either gain or loss electrons in their outermost shell in order to attain a stable electronic configuration i.e having eight (8) valence electrons in their outermost shell such as chemical elements found in group 8 (2-8-8) known as noble gas.

A phosphorus atom needs to gain three (3) electrons to achieve a full octet because the atomic number of phosphorus is 15 and as such it has the electronic configuration of 2-8-5 and needs three electron in order to become a stable element.

5 tickets for $ 12.50

Explanation

to figure out this we need to find the unit rate

so

Step 1

the rate is given by:

then

a) for 5 tickets and $12.50

replace and calculate

b) for 8 tickets and $20.16

replace and calculate

therefore, the better deal is 5 tickets for $ 12.50, you will get more tickets per dollar

I hope this helps you

Label the rows as the electron energy levels:

The rows of the periodic table are also known as periods. There are seven periods, and each period corresponds to a particular energy level. You can label them from 1 to 7, starting from the top row.

Label the number of valence electrons in Columns 1, 2, and 13-18:

Columns 1 and 2 are the s-block elements, and they have 1 and 2 valence electrons, respectively. Columns 13-18 are the p-block elements, and they have 3 to 8 valence electrons, respectively. You can label the number of valence electrons in each column.

Label the metals, semi-metals, and non-metals using different colors:

Metals are on the left side of the periodic table, semi-metals are in the middle, and non-metals are on the right side. You can use different colors to label them without obscuring any of the information about different elements.

Label the ion charges for elements in the first 3 rows:

Elements in the first 3 rows of the periodic table have predictable ion charges. The alkali metals (Group 1) have a charge of +1, the alkaline earth metals (Group 2) have a charge of +2, and the elements in Group 13 have a charge of +3. For Groups 15, 16, and 17, the charges are -3, -2, and -1, respectively. The noble gases (Group 18) are unreactive and do not form ions. You can write these charges for each element in their respective positions.

Label the trends for atomic size, ionization energy, and electron affinity:

Atomic size generally decreases from left to right across a period and increases from top to bottom within a group. Ionization energy generally increases from left to right across a period and increases from bottom to top within a group. Electron affinity generally increases from left to right across a period and becomes less negative from top to bottom within a group. You can label these trends on your periodic table as well.

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Answer:

ok

Explanation:

The First Law of Thermodynamics is generally referred to as the "Law of Conservation of Matter and Energy."

The wavelength will be longer, increasing the diffraction angle.

The separation between two successive wave crests or troughs is known as a wavelength.

Here are some wavelength illustrations: Yellow Light, for instance. All visible light has a wavelength between 400 and 700 nanometers (nm).

Radio waves, light waves, and infrared (heat) waves are examples of electromagnetic radiation that flow through space in distinct patterns.

The symbol for the wavelength in the SI is often the letter m. Additionally, multiples or fractions of a metre are employed when calculating wavelength. The use of exponential powers of 10 is noteworthy when wavelengths are a significant feature.

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Answer:

Simple Response: The diffraction angle of the waves is approximately equal to the wavelength divided by the gap width. Therefore, increasing the wavelength will increase the diffraction angle.

Explanation:

Answer:

The core muscles stabilize and protect the spine. True

hope this answer will help u

Answer:

In general, once the wire is connected, the two spheres have to be held at equal electric potential (voltage). Since they are of equal size, equal voltage means equal charge. (The voltage is kQ/R on the surface of the sphere — if the two spheres are far apart.)

Explanation:

each sphere has -1c

Explanation:

7.56 × 10^5 kilometers per hour / 1.600 x 10^3 kilometers per hour=

    4.78 x 10^2  =  478  =  about 500

Answer:

add 44m/s and 22m/s then multiply it by 11

Explanation:

A race car traveling at 44m/s slows at a constant rate to a velocity of 22m/s over 11 seconds, Acceleration is -2 m/s² (deceleration), and distance is 242 meters.

To solve this problem, it is given:

Initial velocity (\(\(v_i\)\) ) = 44 m/s

Final velocity (\(\(v_f\) ) = 22 m/s

Time (\(\(t\)\) ) = 11 s

We have two tasks: finding the acceleration (a) and then using it to calculate the distance (d).

1. Calculate Acceleration (a):

\(\[a = \frac{v_f - v_i}{t} \\\\= \frac{22 \, \text{m/s} - 44 \, \text{m/s}}{11 \, \text{s}} \\\\= -2 \, \text{m/s}^2\]\)

The negative sign indicates deceleration (slowing down).

2. Calculate Distance (d):

Using the kinematic equation:

\(\[d = v_i \cdot t + \frac{1}{2} \cdot a \cdot t^2\]\)

Plugging in the values:

\(\[d = (44 \, \text{m/s}) \cdot (11 \, \text{s}) + \frac{1}{2} \cdot (-2 \, \text{m/s}^2) \cdot (11 \, \text{s})^2\]\)

Calculating the first part:

\(\[d = 484 \, \text{m} - 121 \, \text{m} \\\\= 363 \, \text{m}\]\)

Calculating the second part:

\(\[d = 363 \, \text{m} + \frac{1}{2} \cdot (-2 \, \text{m/s}^2) \cdot (121 \, \text{s}^2) \\\\= 363 \, \text{m} - 121 \, \text{m} \\\\= 242 \, \text{m}\]\)

The total distance the race car moves during this time is 242 meters.

Thus, acceleration is -2 m/s² (deceleration), and distance is 242 meters.

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122 N force does the car exert if it’s mass is 1201 kg and the car goes from 5.40 m/s to 16.3 m/s in 107 S.

At this point, it is perfectly acceptable to refer to a force as a pushed or even a pull. A power is not a material that an object "contains" or "has in it." A force is applied to one thing by another. The idea of a force encompasses both living and non-living things.

GIVEN-

a = (16.3- 5.4)/107

=0.10 m/s^2

m= 1201 kg

F = ma

= 122 N

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Answer:

15 cm

Explanation:

Dari pertanyaan yang diberikan di atas, diperoleh data sebagai berikut:

Gaya 1 (F₁) = 225 N

Jarak terpisah 1 (d) = 5 cm

Gaya 2 (F₂) = 25 N

Jarak terpisah 2 (d₂) =?

Kita dapat memperoleh persamaan yang berkaitan dengan gaya dan jarak muatan dua titik dengan menggunakan rumus berikut:

F = Kq₁q₂ / d²

Perbanyak silang

Fd² = Kq₁q₂

Menjaga Kq₁q₂ konstan, kita memiliki:

F₁d₁² = F₂d₂²

Dengan rumus di atas maka diperoleh jarak sebagai berikut:

Gaya 1 (F₁) = 225 N

Jarak terpisah 1 (d) = 5 cm

Gaya 2 (F₂) = 25 N

Jarak terpisah 2 (d₂) =?

F₁d₁² = F₂d₂²

225 × 5² = 25 × d₂²

225 × 25 = 25 × d₂²

5625 = 25 × d₂²

Bagilah kedua sisinya dengan 25

d₂² = 5625/25

d₂² = 225

Hitung akar kuadrat dari kedua sisi

d₂ = √225

d₂ = 15 cm

Oleh karena itu, muatan dua titik harus berjarak 15 cm untuk memiliki gaya tarik 25 N

Answer:

The magnitude of magnetic force between the two parallel wires is 1.13 N.

Explanation:

Given;

length of each wire, l = 31 m

distance between the two parallel wires, r = 0.155 m

current on each wire, I = 168 A

The magnitude of magnetic force between the two parallel wires is calculated as;

\(F = \frac{\mu _oI_1I_2 L}{2\pi r} \\\\F = \frac{(4\pi \times 10^{-7}) \times (168)^2 \times (31)}{2\pi \times 0.155} \\\\F = 1.13 \ N\)

Therefore, the magnitude of magnetic force between the two parallel wires is 1.13 N.

Answer:

For example, if the body rotates around a circle of radius r at 360o, then the angular displacement is found by the distance traveled around the circumference. This is found by 2πr, divided by radius θ = 2πr/r. In simplistic terms, it can be denoted as θ=2π, where 1 revolution is 2π radians.

Explanation:

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Answer:

3 volts / 2 ohms =1.5 Amperes

Answer:

The density is 1.1gcm3

Answer:

The light transmitted through the system will be 0.125*I₀.  

Explanation:

The light transmitted through the system can be found using Malus Law:

\( I = I_{0}cos^{2}(\theta) \)    (1)

Where:

I: is the intensity of the light transmitted

I₀: is the initial intensity

θ is the angle relative to the first polarizer’s = 60°

Because the light transmitted by the first polarizer is dropped by half, the equation (1) results as:  

\( I = \frac{I_{0}}{2}cos^{2}(\theta) \)

\( I = \frac{I_{0}}{2}cos^{2}(60) \)

\( I = 0.125I_{0} = \frac{1}{8}I_{0} \)

Therefore, the light transmitted through the system will be 0.125*I₀.  

I hope it helps you!

Speed is defined as the pace of the distance traveled. It is represented by v

Speed is defined as the rate of change of the distance or the height attained. it is a time-based quantity.

it is denoted by u for the initial speed while v for the final speed. its SI unit is m/sec.

Hence, speed is represented by v.

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Answer:

its B

Explanation:

Answer:

It's B, No, because the grains are arranged in thin, parallel layers.

Explanation:

I literally took the test 5 seconds ago and it was right.

Answer:

The yo-yo :)

Explanation:

The three types of collisions are partially inelastic, complete inelastic and completely elastic collision.

The three types of collisions are partially inelastic, complete inelastic and completely elastic collision. Complete inelastic collision includes objects which will stick together afterward. Partially inelastic collision involves objects which cut apart after their collision, but deformations appear in some ways by the point of interaction. Elastic collision consists of objects which depart after the collision. These are the three types of  collisions. An elastic collision happens when two objects collide and bounce back to its initial place. So, the collision of two cars is not elastic rather, inelastic.

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Answer:

F = G M m / R^2 = 6.67E-11 * 1.99E30 * 5.98E24 / (1.5E11)^2

F = 6.67 * 1.99 * 5.98 / 2.25 E21 Newtons

F = 3.53E22 N

Answer:

4/3 kg

Explanation:

KE = (1/2)mv^2

6=0.5*m*(3)^2

m=4/3

The law of conservation of energy states that energy is always conserved, and cannot be destroyed.

At the top of the hill, the ball is at the maximum height. Because the equation for gravitational potential energy is (\(U_{g}\) = mgH), we can safely conclude that the GPE at A, the top of the hill, is the greatest in all 4 options.

Now, what about Kinetic Energy? Recall the law of conservation of energy. At the point where Gravitational Potential Energy is the lowest, Kinetic Energy will be the highest. Total energy is always conserved, and so it is logical that KE will increase to compensate for GPE decreasing. Therefore, we know that at point C, the ball will have the greatest Kinetic Energy. Because this point is the lowest point in the hill, the ball will have the lowest possible GPE and therefore the largest possible KE out of the 4 options.

4. A

5. C

If you're still confused or would like me to explain this further, just ask!

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Answer:

A mineral has a volume of 6 mL and a mass of 12g.

Explanation:

Was this right?

Considering the Charles's Law, the volume change by a factor of \(\frac{473 }{298 }\) or 1.587.

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain amount of ideal gas, which is maintained at a constant pressure, by means of a proportionality constant that is applied directly.

In other words, Charles' law states that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases: while if the temperature of the gas decreases, the volume decreases.

Mathematically, Charles's law is a law that says that when the amount of gas and pressure remain constant, the ratio between volume and temperature will always have the same value:

\(\frac{V}{T} =k\)

Considering an initial state 1 and a final state 2, it is true that:

\(\frac{V1}{T1} =\frac{V2}{T2}\)

In this case, you know:

Replacing in Charles's law:

\(\frac{V1}{298 K} =\frac{V2}{473 K}\)

Solving:

V2=\(473\frac{V1}{298 K}\)

V2=\(\frac{473 K}{298 K}V1\)= 1.587 V1

Finally, the volume change by a factor of \(\frac{473 }{298 }\) or 1.587.

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Temperature rise will be there in cylinder B more than in cylinder A because of internal energy.

what is internal energy?

The sum of the kinetic and chemical potential energies of all the particles in the system is the internal energy. Particles accelerate and pick up kinetic energy when energy is applied to increase the temperature.

Briefing:

Cylinder A uses the heat it absorbs to both work while expanding and to increase internal energy (or temperature).

While cylinder B solely uses the heat it absorbs to increase its internal energy 

As a result, cylinder B's temperature rise is greater than cylinder A's.

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Answer:

A) 20m/s

Explanation:

v= wavelength*frequency

You have a wavelength of 4m and a frequency of 5, so you just multiply 4*5=20 v= 20m/s

The ratio of the potentials of these surfaces is 1.2,

Option choice C is correct.

The potential at any point on an equipotential surface is constant.

Since both spheres are equipotential surfaces, the potential at the center of sphere A is equal to the potential at any point on sphere A, and likewise for sphere B.
The potential at the center of sphere A due to the point charge is given by the formula

V = kq/r,

where k is the Coulomb constant,

q is the charge,

and r is the distance from the charge to the point.

In this case,

V = kq/RA.
The potential at the center of sphere B due to the point charge is given by the same formula,

but with r = RB.

So V = kq/RB.
Taking the ratio of these two potentials, we get:
VA/VB = (kq/RA)/(kq/RB)
VA/VB = (RB/RA)
VA/VB = 0.0012/0.0010
VA/VB = 1.2.

Option choice C is correct.

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the answer is 104 atm I hope this helps!