The modern periodic table is organized by:
atomic number
atomic mass
chemical name
chemical symbol

Given

Procedure

Dimensions of v are L/T

The answer would be:

The letter a is multiplying to one dimension in time, so it must be a value of distance over two of time. LT^(-2)

The letter b is in the numerator so it must be a distance dimension. L

The letter c is being operated as a subtraction in the denominator so it must be time T

A pair of magnetic poles or equal and opposite electric charges that are specially separated by a short distance are known as dipoles.

What does "electric dipole" mean?

A pair of opposing charges that are spaced apart from one another is what is referred to as an electric dipole. Electric dipoles always point in the direction of positive charge "q" from negative charge "-q" in space by default. The dipole's center is the location of the middle.

When a positive and negative charge are divided by a certain distance, a (electric) dipole is created in physics. Due to differences in the electronegativity of the two atoms, there are covalent bonds in polar molecules where one element is more attracted to the shared electrons than the other.

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Answer:

D

Explanation:

A is wrong as the direction of the car changes, implying velocity is changing and not constant.

B and C are wrong as both the change in speed and direction contribute to the change in velocity

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▹ Answer

This organelle is known as the mitochondria,

▹ Step-by-Step Explanation

The mitochondria is the site of cellular respiration and is often referred to as the "powerhouse of the cell". The mitochondria makes energy which is known as ATP, and also operates other processes.

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Answer:

The Mitochondria

Explanation:

The mitochondria is often known as the powerhouse of the cell.

This is because it produces energy (ATP) by breaking down glucose.

Also, as mentioned, it is where cell respiration takes place.

Let's explain why Common Emitter (CE) configuration is preferred over Common Collector (CC) for amplification purposes.

Common Emitter amplifier is an amplifier that offers high current gain, medium input resistance and high output resistance.

Common Collector is another type of amplifier where the input signal is applied to the base and the ouput signal is taken from the emitter.

The Common Emitter configuration is preferred over the Common Collector configuration because the Common Emitter offers a high power gain(high voltage and current gain), and has a lower resistance when compared to the Common Collector configuration.

ANSWER:

The common Emitter configuration has higher voltage and current gain when compared to the Common Collector configuration.

Answer:

The correct option is (c) "it bounces the light towards a focal point"

Explanation:

There are two types of spherical mirrors i.e. concave and convex.

A concave mirror is a type of spherical mirror that is curved inwards. For this type of mirror the rays of light are bounced back and converge to the focal point of the mirror.

So, the correct option is (c).

Answer:

c

Explanation:

Answer:

Explanation:

The centripetal acceleration:

aₙ = F /m = 125 /19 ≈ 6.6 m/s²

Answer:

7 Seconds

Explanation:

P=W/t

t=W/P

t=875,000/125,000

t=7 seconds

Answer: A circuit is said to be a parallel circuit if the electrical components are connected in a parallel configuration or their end are connected to a common point. It forms multiple loops or pathways for the current to flow. A circuit is said to be a series circuit if the components are connected in a series configuration or cascaded formation in a single line. A series circuit forms a pathway that has only one loop, therefore, the current flowing through components is the same and the voltage divides depending on the resistance of each component.

Explanation:

Answer:

a. The horizontal component of the velocity is constant so vxt = d where vx = v0 cosθ = 16m/s t = d/v = 2s

b. The height of the ball during its flight is given by y = v0yt + ½ gt2 where v0y = v0sinθ = 12m/s and g = –9.8m/s2 which gives at t = 2s, y = 4.4m. The fence is 2.5m high so the ball passes above the fence by 4.4m – 2.5m = 1.9m

Explanation:

Answer:

3km? im a beginner

Answer:

(1)

H² = B² × L²

H² = (9.2)² × (5.2)²

H² = 84.64 × 27.04

H² = 2288.6656

H = √ 2288.6656

H = 47.84

Answer:

Use Pythagorean theorem

19) A² + B² = C²

5.2² + 9.2² = C²

C = √111.68

C = 10.567875...

C ≈ 10.6

21) A² + B² = C²

B² = C² - A²

B² = 7.2² - 5.3²

B = √23.75

B = 4.873397...

B ≈ 4.9

Computerized axial tomography is a noninvasive roentgenography diagnostic technique.

Tomography can be described as imaging by sections or sectioning that uses any type of penetrating wave. The method is used in biology, radiology, archaeology, geophysics, atmospheric science, oceanography, plasma physics, astrophysics, materials science, quantum information, and other areas of science.

In some cases, the production of images will be based on the mathematical procedure of tomographic reconstruction, such as X-ray computed tomography being produced from projectional radiographs.

Most algorithms come into these two categories: filtered back projection (FBP) and iterative reconstruction (IR). Optical coherence tomography is transmission methods, they do not require movement of the transmitter to need data from different directions.

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The image produced by a plane mirror is virtual, upright and is same sized as the object. And the image distance is same as the object distance.

Thus given statement is true.

The velocity of the car is equal to 20 m/s.

Given the following data:

Scientific data:

To determine the velocity of the car:

First of all, we would calculate the mass of the car by using this formula:

\(Weight = mg\\\\40000=m \times 10\\\\m=\frac{40000}{10}\)

Mass, m = 4,000 kg.

For the velocity:

Mathematically, momentum is giving by this formula;

\(Momentum = mass \times velocity\)

Making velocity the subject of formula, we have:

\(Velocity = \frac{Momentum}{Mass}\)

Substituting the given parameters into the formula, we have;

\(Velocity = \frac{80000}{4000}\)

Velocity = 20 m/s.

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Answer:

A - 25m/s

Explanation:

The velocity of the motorbike will be 25 m/s in order to ensure that the truck and the motor bike have the same kinetic energy.

The kinetic energy of the body is by the virtue of its motion.

Given is a large truck of mass 5000 kg which is travelling at 5.0 m/s and a motorbike that has a mass of 200 kg. Both the truck and the motor bike have the same kinetic energy.

The Kinetic energy of the truck will be -

E[T] = 1/2 mv² = 1/2 x 5000 x 25 = 2500 x 25 = 62500 joules

Then Kinetic energy of the motorbike will be -

E[M] = 1/2 x 200 x v²

E[M] = 100v² joules

Now-

E[T] = E[M]

100v² =  62500

v² = 625

v = 25 m/s

Therefore, the velocity of the motorbike will be 25 m/s in order to ensure that the truck and the motor bike have the same kinetic energy.

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The expression for the gravitational force between two bodies is given by:

where,

G: Cavendish's constant = 6.67*10-11Nm^2/kg^2

m1 = 3.0kg

m2 = 14kg

Solve the equation above for r:

Hence, the distance between the dog and the car is approximately 1.67m

B. An addition of 400 J of GPE and a loss of 250 J of thermal energy

The law of conservation of energy states that energy can neither be created nor destroyed but can be converted from one form to another.

From first law of thermodynamics;

ΔU = Q + W

where;

Thus, the scenario that will increase the total energy of a system is "An addition of 400 J of GPE and a loss of 250 J of thermal energy".

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The name for the rotating cloud of dust and gas that scientists theorized our solar system began as is the solar nebula.

This concept plays a crucial role in understanding the formation of our solar system approximately 4.6 billion years ago. The solar nebula was a massive, rotating disk composed primarily of hydrogen, helium, and other elements that eventually coalesced into the sun, planets, and other celestial bodies we observe today. The process began with the gravitational collapse of the solar nebula, causing the material to condense and flatten into a disk-like structure. As the temperature and pressure in the center increased, nuclear fusion reactions ignited, ultimately forming the sun.

Meanwhile, in the cooler outer regions, solid particles began to stick together, forming larger clumps called planetesimals. Over time, these planetesimals combined and grew into the planets and other bodies in our solar system. In summary, the solar nebula is the name given to the rotating cloud of dust and gas that scientists believe led to the formation of our solar system through processes such as gravitational collapse, nuclear fusion, and the coalescence of solid particles.

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Answer:

Wtens = (20 N) * (5 m) * cos (0 deg) = +100 Joules

Wgrav = (20 N) * (5 m) * cos (180 deg) = -100 Joules

Wapp= (10 N) * (5 m) *cos (0 degrees) = +50 Joules

Wfrict =(10 N) * (5 m) * cos (180 degrees) = -50 Joules

Wapp = (10 N) * (5 m) * cos (0 deg) = +50 Joules

Wfrict = (10 N) * (5 m) * cos (180 deg) = -50 Joules

Explanation:

Apply the work equation to determine the amount of work done by the applied force in each of the three situations described below.

Answer:

Explanation:

You didn't ask a question here, but I assume you want the pressure? You can use the ideal gas equation stating that:

PV = nRT

The 'P' is pressure, the 'V' is volume, the 'n is number of moles of gas, the 'R' is the ideal gas constant, and the 'T' is the temperature. First convert the Celsius degrees into Kelvin by using the following relation:

C + 273.15 = K

4 + 273.15 = 277.15K

Now, find the volume of a cylinder by using:

\(V=\pi r^2l\)

The 'l' is the length of the cylinder

Now just plug and chug everything into the ideal gas equation:

\(PV=nRT\)

\(P(\pi r^2l)=(5moles)(8.3145J/moles*K)(277.15K)P=\frac{11.52J}{\pi r^2l}\)

Answer:

Explanation:

The pressure at one end of the piston is equal to the pressure on the second piston.

Pressure = Force/Area

F1/A1 = F2/A2

Given

F1 = 250N

A1 = 2.0m²

A2 = 0.5m²

F2 = ?

Substituting the given values in the formula;

250/2 = F2/0.5

cross multiply

250*0.5 = 2F2

125 = 2F2

F2 = 125/2

F2 = 62.5N

Hence the  force needed to lift this piston if the area of the second piston is 0.5 m^2 is 62.5N

Answer:

v = 2,99913 10⁸ m / s

Explanation:

The velocity of propagation of a wave is

         v = λ f

in the case of an electromagnetic wave in a vacuum the speed that speed of light

         v = c

When the wave reaches a material medium, it is transmitted through a resonant type process, whereby the molecules of the medium vibrate at the same frequency as the wave, as the speed of the wave decreases the only way that they remain the relationship is that the donut length changes in the material medium

         λ = λ₀ / n

where n is the index of refraction of the material medium.

Therefore the expression is

           v = \(\frac{\lambda_o}{n} f\)

Let's look for the frequency of blue light in a vacuum

           f =\(\frac{c }{\lambda_o}\)  

           f = \(\frac{3 \ 10^8}{450 \ 10^{-9}}\)

           f = 6.667 10¹⁴ Hz

the refractive index of air is tabulated

           n = 1,00029

let's calculate

           v = \(\frac{450 \ 10^{-9} }{1.00029} \ 6.667 \ 10^{14}\)450 10-9 / 1,00029 6,667 1014

            v = 2,99913 10⁸ m / s

we can see that the decrease in speed is very small

Answer:2n

Explanation:10/5=2

Answer:

First graph

Explanation:

The inequality is

y < -x² + 4x + 5

The line that separates the regions is the graph of the parabola y = -x² + 4x + 5

So, this is a parabola that opens down because the coefficient of x² is -1 and it is negative.

Therefore, the possible options are the first and the third graph

Then, let's see if the point (x, y) = (0, 0) belongs to the region

y < -x² + 4x + 5

0 < -0² + 4(0) + 5

0 < 5

Since the inequality is satisfied, the point (0, 0) belongs to the region and the answer is the first graph.

Therefore, a 60kg object would weigh approximately 96 Newtons on the moon.

The acceleration due gravity on the moon is a measure of how much objects accelerate toward the moon's surface under the influence of its gravitational force. It is denoted by the symbol g and gas a value of approximately 1.6m/s²

To calculate the weight of a 60kg object on the moon, you can use the formula:

Weight = mass × acceleration due to gravity

Weight = 60kg × 1.6m/s²

Weight on the moon = 96N

Therefore, a 60kg object would weigh approximately 96 Newtons on the moon.

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The heating curve could be describing processes such as boiling and endothermic reactions.A heating curve is a graphical representation that shows the changes in temperature as a substance is heated.

It typically consists of two distinct segments: heating and phase change. Boiling is a process where a substance changes from its liquid phase to its gaseous phase. During the heating phase, the temperature of the substance gradually increases until it reaches its boiling point. At this point, the substance undergoes a phase change, and the temperature remains constant until all the liquid has vaporized. Therefore, the heating curve could be describing the process of boiling.

Endothermic reactions are chemical reactions that absorb heat from their surroundings, resulting in a decrease in temperature. If the heating curve represents the temperature changes during an endothermic reaction, we would observe a decrease or plateau in temperature during the reaction, followed by a subsequent increase. Thus, the heating curve could also be describing an endothermic reaction.

Condensation, on the other hand, is the process by which a substance changes from its gaseous phase to its liquid phase. It typically occurs when a gas is cooled down, and the temperature decreases. However, the heating curve represents temperature changes during the heating process, not cooling. Therefore, condensation is not applicable to the heating curve.

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This type of energy utilizes heat that is stored beneath the surface of the Earth to heat water and produce steam : geothermal energy.

Geothermal energy is the heat produced deep in the Earth's core and is a clean, renewable resource that can be harnessed for use as heat and electricity. Geothermal energy is the thermal energy in the Earth's crust that originates from the formation of planet.

Geothermal energy is the heat within the earth. Geothermal energy is a renewable source of energy because heat is continuously produced inside the earth. People use geothermal heat for bathing, heating buildings and to generate electricity.

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