A 6 kg object has a speed of 24 m/s. What is its kinetic energy?

Answer:

Explanation:

Covalent, or molecular, compounds are formed when two nonmetals react with one another. By sharing electrons, the elements combine to form a compound, resulting in an electrically neutral molecule. Covalent Compounds Gilbert N. Lewis, an American physical chemist, first described covalent bonding in a 1916 article, though he did not use the term.

The current that can flow in the secondary is 23 A

According to Transformation ratio,

[tex]V_{p}[/tex] / [tex]V_{s}[/tex] = [tex]I_{s}[/tex] / [tex]I_{p}[/tex]

where,

[tex]V_{p}[/tex] = Voltage across the primary coil

[tex]V_{s}[/tex] = Voltage across the secondary coil

[tex]I_{s}[/tex] = Current in the primary coil

[tex]I_{p}[/tex] = Current in the secondary coil

Given that,

[tex]V_{p}[/tex] = 110 V

[tex]V_{s}[/tex] = 24 V

[tex]I_{p}[/tex] = 5 A

[tex]V_{p}[/tex] / [tex]V_{s}[/tex] = [tex]I_{s}[/tex] / [tex]I_{p}[/tex]

110 / 24 = [tex]I_{s}[/tex] / 5

[tex]I_{s}[/tex] = 22.9 = 23 A

Transformation ratio is the ratio of secondary voltage to primary voltage.

Therefore,  The current that can flow in the secondary is 23 A

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The average speed of a horse that gallops a distance of 10 km in a time of 30 min is: b. 20km/h.

The formula and procedure we will use to solve this problem is:

v = x/t

Where:

Information about the problem:

By converting the time units from (min) to (h) we have:

t = 30 min * 1 h/60 min

t= 0.5 h

Applying the velocity  formula we get:

v = x/t

v = 10 km/0.5 h

v = 20 km/h

It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).

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The period is 2 seconds.

A period is a time taken to make one simple harmonic motion. It can be described as time divided by how many waves do. We can write the period formula as

T = t / n

where T is period, t is time and n is the amount of simple harmonic motions.

From the question above, we know that the mass travel up and down, it means that the cycle is one simple harmonic motion.

n = 1

t = 2s

Hence

T = t / n

T = 2 / 1

T = 2 second

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The demand for widgets has a price elasticity of 0.5. If we assume no change in the demand curve for widgets, an increase in sales of 8 percent implies a(n) 32% reduction in price.

The basic formula for the price elasticity of demand coefficient is:

Percentage change in quantity being demanded/percentage change in the price

Demand elasticity the price elasticity of demand (PED) of a good is a measurement of how responsive the quantity demanded is to the price.

Almost all goods see a decrease in quantity demanded when prices rise, however certain goods experience this decrease more than others.

When a price increases by 1% while all other factors remain constant, the price elasticity provides the percentage change in the quantity required. If the elasticity is 2, a 1% increase in price results in a 2% decrease in the amount demanded.

Other elasticities gauge how changes in other factors affect the quantity needed (e.g., the income elasticity of demand for consumer income changes).

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Answer:

Thermal

Thermalphenomena.

Sound

Soundphenomena.

Mechanical

Mechanicalphenomena.

Light

Lightphenomena.

The frequency does the other car hear after they pass each other is 631.8 Hz.

The frequency heard by the second car is calculated as follows;

f = f'(v/v - vs)

where;

f = 595(343/343 - 20)

f = 631.8 Hz

Thus, the frequency does the other car hear after they pass each other is 631.8 Hz.

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Proportional scale or Proportion wheel are terms used to describe the process of preparing illustrations for expansion or reduction.

What is the proportional principle?

The relationship between two or more elements in a design and how they stack up against one another is known as proportion. When there is a proper size or quantity relationship between the elements, proportion is said to be harmonic.

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One of the fundamental general safety guidelines is to keep the work area clear of combustibles for at least 35 feet from the hot work area.

Hot works or combustible works such as welding, heating or cutting should be done at a location which is far away form any combustible material.

Prior to start working in such a location make sure there are no hazardous or combustible material around such as fire, ignition source or electric spark.

All precautionary measures must be taken to confine heat, fire or spark so that they don not come into contact with nay combustible object.

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Jennifer runs 5 miles east, then stops to take a break. after her break, she continues running 4 more miles east.

In this the total distance she covers is 9 miles and the total displacement is also the same as the distance that is 9 miles.

Displacement is the shortest distance between initial and final position, or we can say it is the straight-line distance between initial and final position.

Whereas distance is considered as the total path length covered from initial position till the final position. The Displacement of a body is always less than or equal to the distance.

Displacement can be zero in case the initial and final positions coincide, but distance can never be zero.

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The average speed of the complete round trip is 65.57 km / h.

We need to know about the average speed to solve this problem. The average speed can be determined as the total distance divided by the total time. It can be written as

v = d / t

where v is average speed, d is distance and t is time.

From the question above, we know that

d1 = 300 km

v1 = 93 km/h

t lunch = 1 hour

d2 = 300 km

v2 = 56 km/h

Find the time during the outgoing

v1 = d1 / t1

t1 = d1 / v1

t1 = 300 / 93

t1 = 3.23 hours

Find the return time

v2 = d2 / t2

t2 = d2 / v2

t2 = 300 / 56

t2 = 5.36 hours

Hence, the total time

t = t1 + t2 + t lunch

t = 3.23 + 5.36 + 1

t = 9.59 hours

Find the average speed

v = d / t

v = (300 + 300) / 9.59

v = 65.57 km / h

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By using ideal gas approximation, the sun's temperature is 2.27 x 10⁷ K.

We need to know about ideal gas to solve this problem. The ideal gas will follow the rule

P . V = n . R . T

where P is pressure, V is volume, n is the amount of substance, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

From the question above, we know that:

Mr = 2 g/mol

ρ = 1.4 g/cm³

P = 1.3 x 10⁹ atm = 1.32 x 10¹⁴ Pa

m(sun) = 1989 x 10³⁰ g

Find the amount of sun substance

n = m / Mr

n = 1989 x 10³⁰ / 2

n = 994.5 x 10³⁰ mol

Find the volume of sun

V = m/ρ

V = 1989 x 10³⁰ / 1.4

V = 1420.71 x 10³⁰ cm³

V = 1.42 x 10²⁷ m³

By substituting the parameters, we get

P . V = n . R . T

1.32 x 10¹⁴ . 1.42 x 10²⁷ = 994.5 x 10³⁰ . 8.31 . T

T = 2.27 x 10⁷ K

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Your blue receptors will become fatigued if you stare at a blue image for too long, and the afterimage will be the opposite colour: orange.

A yellowing of the optical medium of the eye causes Xanthopsia, a colour vision impairment in which blue dominates in perception. Digoxin's inhibition of the sodium pump as well as cataract formation, which can have the effect of a yellow filter, are the most frequent causes.

A blue-green, or cyan, afterimage of the same size and form can be seen if you stare at a red item and then look at a white region shortly after.

Digibind or Digifab, also known as digoxin-specific antibody antigen-binding fragments (DSFab), are a potent antidote that binds digoxin directly.

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To increase the electric force between two charged particles by a factor of 16, we D. Increase one particle's charge by a factor of 16.

Electric force is the force of attraction between two charged particles.

The magnitude of the electric force is given by F = kq₁q₂/r² where

Given that we have two charged particles q₁ and q₂ separated by a distance r, the electric force betwen them is given by F = kq₁q₂/r²

Now, if we want to increase the force by a factor 16, we have the new force F' = 16F

F' = 16kq₁q₂/r²

F' = k16q₁q₂/r²

F = k(16q₁)q₂/r² or kq₁(16q₂)/r²

This implies that either one of the charged particles q₁ or q₂ is increased by a factor of 16

So, to increase the electric force between two charged particles by a factor of 16, we D. Increase one particle's charge by a factor of 16.

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In the canopies of tropical forests, plants are able to survive despite the high temperatures and high levels of solar radiation due to the process of Transpiration.

Most of the water absorbed by roots of water is not used for growth of plant but to maintain a moisturized environment. For this purpose water is evaporated as vapour from stoma on the underside of leaves.

This process is called transpiration. Transpiration is the evaporation of water from plants. This cools down plants under hot conditions. This process also pulls water from stems and roots to leaves to hydrate mesophyll cells.

Therefore, In the canopies of tropical forests, plants are able to survive despite the high temperatures and high levels of solar radiation due to the process of Transpiration.

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The deceleration of the rocket sled if it comes to rest in 1.1 s from a speed of 1000 km/h is  [tex]252.52\ m/s^2[/tex].

The acceleration in opposite direction is known as the deceleration. Basically the deceleration is negative value of the acceleration since the negative sign depicts its opposite in direction.

The given data:

time, t = 1.1 s

initial speed, u = 1000 km/h = [tex]\frac{2500}{9}\ m/s[/tex]

final speed, v = 0 m/s

So we will be using the equation of motion, that is,

v = u + at

[tex]\therefore 0=\frac{2500}{9} + a(1.1)[/tex]

[tex]\Rightarrow a=-\frac{2500}{9(1.1)}[/tex]

[tex]\therefore a = - 252.52 \ m/s^2[/tex]

Hence , the deceleration of the rocket is  [tex]252.52\ m/s^2[/tex].

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Valid line of code for displaying the twenty-eighth element of some array is System.out.println(somearray[27]).

Arrays are among the most well-known and essential data structures, and they are utilized by practically all programs. A wide variety of additional data structures, including lists and strings, are likewise implemented using them. They successfully take advantage of computers' addressing systems. The memory is a one-dimensional array of words whose indices are their addresses in the majority of contemporary computers and many external storage devices. Array operations are frequently optimized for by processors, especially vector processors.

The main reason why arrays are helpful is that the element indices may be calculated in real time. This feature, among other things, enables a single iterative statement to process an array's items in any number.

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The level (n) of the final state of the electron n₂ = 6

a photon, also known as a light quantum, is a very small energy package of electromagnetic radiation. When explaining the photoelectric effect in 1905, Albert Einstein proposed the potential of energy levels packets during the transmission of light.

A negatively charged subatomic component called an electron can be either attached to or detached from an atom (not bound). Protons, neutrons, and electron that is bonded to the atom make up the three basic types of particles that make up an atom. Protons, neutrons, and electrons make up the nucleus of an atom.

An atom of hydrogen has a value of 1.0952 x 10-6 m

starting at level 1, the electron n = 3

what is the electron's final state level (n).

[tex]\frac{1}{\lambda}=\bar{v}=R_H\left(\frac{1}{n_1^2}-\frac{1}{n_2^2}\right)[/tex]

λ =   1.0952 x 10⁻⁶m

  = 1.0952 x 10⁻⁴cm

R[tex]_H[/tex] = 109677cm⁻¹

n₁ = 3

n₂ = ?

Putting the value in the formula:

we get,

1/1.0952 x 10⁻⁴ = 109677cm⁻¹[tex]\left(\frac{1}{3^2}-\frac{1}{n_2^2}\right)[/tex]

0.0833 = 1/9 - 1/(n₂)²

(n₂)² = 1/0.0278

n₂ = 6

The level (n) of the final state of the electron n₂ = 6

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Digital camera demand is inelastic if the price elasticity of demand is 0.88, meaning that price rises for cameras will result in higher overall sales.

Price elasticity of demand measures how much a product's consumption changes in response to price changes. If a good's price elasticity is infinite, it is perfectly elastic (if demand changes substantially even with minimal price change). The good is elastic if price elasticity is more than 1, and inelastic if it is less than 1. A good is completely inelastic if its price elasticity is zero, meaning that no amount of price variation will alter demand. The quantity effect will be overpowered by the price effect. The relationship between the percentage change in a product's quantity demanded and the percentage change in price is known as price elasticity of demand. It helps economists comprehend how supply and demand shift in response to changes in a product's price.

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Speed of electron with which it is traveling is

0.56 x 10^8 m/s

It is given that

distance travelled by electron is 3.31 m

time taken to travel = 5.83 x 10^-8 s

We have to find Speed of electron with which it is traveling

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path. In other words, velocity is a vector, whereas speed is a scalar value.

Speed = distance/time = 3.31/5.83 x 10^-8

Speed = 0.56 x 10^8 m/s

Hence, Speed of electron with which it is traveling is 0.56 x 10^8 m/s

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The approximate radius is 6370 Km

The radius of the Earth is approximately 3,960 miles, while the radius of the Moon is approximately 1,080 miles.

Earth is the third planet from the Sun, the largest of the solar system's four terrestrial planets, the planet with the highest density, and the only planet in our solar system known to support life.

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The flow rate of incoming solar energy, as measured at the top of the atmosphere is called: insolation

The insolation is known as the amount of radiation from the sun's energy that the planet receives. A portion of the energy is absorbed or reflected by the atmosphere and another portion reaches the surface.

The insolation is caused major by:

The solar energy is a type of energy whose source is the sun that radiates heat.

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1.549×10-19lJ is the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from =7 to =1.

The equation E= hcE =hc, where h is Planck's constant and c is the speed of light, describes the inverse relationship between a photon's energy (E) and the wavelength of light ().

The Rydberg formula is used to determine the energy change.

Rydberg's original formula used wavelengths, but we may rewrite it using units of energy instead. The result is the following.

aaΔE=R(1n2f−1n2i) aa

were

2.17810-18lJ is the Rydberg constant.

The initial and ultimate energy levels are ni and nf.

As a change of pace from

n=5 to n=3 gives us

ΔE

=2.178×10-18lJ (132−152)

=2.178×10-18lJ (19−125)

=2.178×10-18lJ×25 - 9/25×9

=2.178×10-18lJ×16/225

=1.549×10-19lJ

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The seal's average velocity during the chase is 1.67 m/s.

The seal's average speed during the chase is 5 m/s.

The average velocity of an object is the change in the displacement of the object with time.

The seal's average velocity during the chase is calculated as follows;

Δx = xf - xi

Δx = 20 m - 10 m = 10 m

v = Δx/t

v = 10 m / 6 s

v = 1.67 m/s

The average speed is the ratio of total distance to total time of motion.

v = (10 m + 20 m) / 6 s

v = 30 m / 6s

v = 5 m/s

Thus, the seal's average velocity during the chase is 1.67 m/s.

The seal's average speed during the chase is 5 m/s.

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As shown in the figure below, a seal and shark are playing a fun game of tag. The seal swims leftward 10 m then dodges rightwards another 20 m. The seal swims a total time of 6 s.

Answer:

What is the seal's average velocity during the chase?

Answer: 1.67 m/s

What is the seal's average speed during the chase?

Answer: 5  m/s

The burning of fossil fuels is a threat to the environment.

The term pollution has to do with the introduction of harmful material and energy into the environment. We know that the burning of fossil fuels is one of the chief sources of pollution in the environment. This is can be seen from the images attached.

The burning of fossil fuels introduces carbon dioxide into the environment which in turn causes the temperature of the earth to rise. This is the situation that we call global warming.

The greatest concern of the earth is to ensure that the carbon burden is reduced and that the emission of the carbon to the atmosphere is mitigated in order to reduce the impact of this carbon on the earth.

Thus, the burning of fossil fuels is a threat to the environment.

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Operating capital - Operating capital refers to that amount of cash required to run day to day working or operation of business .

Total Operating Capital = Total assets (short term + long term)  - current liabilities  

total assets include inventories, accounts receivable , fixed assets etc.

current liabilities include account payables, accrued expenses, income tax accrued interest etc.

NOWC means net operating working capital it is difference between current assets and non interest bearing current liabilities

Current assets include cash accounts receivable and inventories and exclude marketable securities

Non interest bearing current liabilities means amount of money company must pay within a year without own interest.

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Carbon dioxide and water vapor are the two principal atmospheric gases that absorb solar energy.

Gases in the atmosphere of the Earth are referred to as atmospheric gases. While greenhouse gases (carbon dioxide, methane, nitrous oxide, water vapor, and ozone) only make up 1% of the air, they make up the majority of these gases, which account for 99% of the air's composition. Several separate gases, each with unique characteristics, are actually mixed together to form the air. Air's chemical makeup changes throughout time. It could change over time and from location to location. There are also some varying elements in the air in our environment. Water vapor, dust particles, and ozone are some of these changeable elements. The weather and environment can be significantly impacted by these, despite their rarity and low concentration.

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The volume of the solid is [tex]V=128\frac{r^{3} }{3}[/tex]

What do you understand by Volume ?

A liquid, solid, or gas's volume is the amount of three-dimensional space it occupies. Although there are many different units that can be used to indicate volume, the most common ones are liters, cubic meters, gallons, milliliters, teaspoons, and ounces.

base is x2+y2=(2r)2

==>y=-√(4r2-x2) ,√(4r2-x2)

So each cross section parallel has base = √(4r2-x2) - -(√(4r2-x2)) = 2√(4r2-x2) and height = base

So area of each cross section is 2√(4r2-x2)*2√(4r2-x2)= 4(4r2-x2)

Now we integrate from left side of circle to right side of circle (-2r to 2r)

V = 4 ∫[ -2r to 2r] (4r2-x2)dx

V = 4 (4r2x - x3/3) [ -2r to 2r]

V = 4 [(4r2(2r) - (2r)3/3) - (4r2(-2r) - (-2r)3/3)]

V = 4 [ (8r3 - 8r3/3) - (-8r3 + 8r3/3)]

V = 4 (16r3 - 16r3/3)

V = 4 (32r3/3)

V = 128r3/3

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