what is deltoids muscle?

the answer should be and electric current

The rate of flow of electric charge is Electric Current.

The flow of the electricity in a electrical circuit by calculating the amount of electricity flows in the circuit is known as Electric current. The Electric current can be referred by the symbol 'I'. The unit of electric current is Ampere (A).

Some of the characteristics of Electric current are:

The Electric current can be described by the formula as,

I = V/R ( Ampere)

I - Current (Unit is Ampere)

V- Voltage (Unit is volts)

R- Resistance. (Unit is ohm).

Thus, Electric current is the rate of flow of electric charge.

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The correct conductor ampacity for a 10-horsepower, 230-volt, single-phase motor is option c. 62.5 A.

The ampacity of a conductor is a measure of the maximum amount of electrical current that can flow through it safely. The ampacity required for a motor is based on the size of the motor and the voltage of the electrical system. There are standard methods for determining the minimum ampacity for a given motor and voltage, such as the National Electric Code (NEC) and the American National Standards Institute (ANSI). The NEC and ANSI both state that the minimum ampacity for a 10-horsepower, 230-volt, single-phase motor is 62.5 amperes. It's important to note that using a conductor with ampacity lower than the recommended one may cause the motor to overheat and fail, leading to damage or even fire hazard.

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Answer:

(a) 1317.44 W/m²

(b) 1.74×10¹⁵ litres of heating oil

(c) -20.63°C

(d) Energy storage in the Earth and the air

Explanation:

The parameters given are;

Luminosity of the Sun = 3.828 × 10²⁶ Watt

Distance of the Earth from the Sun, d = 152.06 × 10⁶ km

The radius of the Sun = 696 × 10³ km

The radius of the Earth, \(r_E\) = 6730 km

The surface area of the Sun = 12000 × Surface area of the Earth

The surface area of the Sun = 6.09 × 10¹² km²

Cross sectional area of the Earth = 1.27 × 10⁴ m² = 0.0127 km²

By the inverse square law, we have;

\(R = \dfrac{Luminosity \, of \, the \, Sun}{4 \pi d^2}\)

Where:

R = Solar radiation reaching the Earth

Therefore;

\(R = \dfrac{3.828 \times 10^{26}}{4 \times \pi \times (1.5206 \times 10^{11})^2} = 1317.44 \ W/m^2\)

Hence, the energy, E, reaching the Earth in a day is given as follows;

E = R × 4×π×\(r_E\)²×60×60×24 = 1317.44 × 4 × π × 6730000² × 60×60×24

E = 6.479×10²² Joules

(b) The number of litres of heating oil is therefore;

6.479×10²² J ÷ (37.3×10⁶ J/litre) = 1.74×10¹⁵ litres of heating oil

(c) 30% of the Energy is reflected, therefore;

0.7 × 6.479×10²² Joules = 4.54×10²² Joules reaches the Earths surface

From Stefan-Boltzmann law, we have;

\(T = \left (\dfrac{\left (1 - \alpha \right ) \times R }{4\times \sigma } \right )^{\dfrac{1}{4}}\)

Where:

α = 0.3

σ = Stefan-Boltzmann constant = 5.6704×10⁻⁸ W/(m²·K⁴)

Therefore;

\(T = \left (\dfrac{\left (1 - 0.3 \right ) \times 1317.44 }{4\times 5.6704 \times 10^{-8} } \right )^{\dfrac{1}{4}} = 252.52 \ K = -20.63 ^{\circ} C\)

(d) The heat storage in the Earth and the air

Answer:

Playing hockey, driving a car, and even simply taking a walk are all everyday examples of Newton's laws of motion.

The maximum frequency affected by the blackout is approximately 7.943 MHz, and the location of the blackout is Laurel, Maryland, which is located at approximately 39.09°N, 76.85°W.

HF radio blackouts are a phenomenon that impacts High Frequency (HF) radio waves by causing them to become inaudible or distorted. The severity of an HF radio blackout is determined by a number of factors, including the frequency of the radio waves, the time of day, and the solar zenith angle.

Let us calculate the maximum frequency affected by the blackout: According to the model, the frequency of the radio wave is inversely proportional to the power of 1.24. So we can write:f∝(P)-1.24, Where f is the frequency of the radio wave, and P is the power of the blackout. So if a blackout occurs at 15 MHz, then we can find the power of the blackout:P=15^(1.24)P=26.98

So the power of the blackout is approximately 26.98.Next, we need to calculate the maximum frequency affected by the blackout. We can do this by using the formula: f∝(P)-1.24, where f is the frequency of the radio wave, and P is the power of the blackout. So if the power of the blackout is 26.98, then we can find the frequency of the radio wave:f=26.98^(-1/1.24)f=7.943MHz

So the maximum frequency affected by the blackout is approximately 7.943 MHz. Now let us find the location of the blackout: According to the question, the blackout occurred at 10 AM Eastern Daylight Time over Laurel, Maryland on September 10th. So the location of the blackout is Laurel, Maryland, which is located at approximately 39.09°N, 76.85°W.

Therefore, the maximum frequency affected by the blackout is approximately 7.943 MHz, and the location of the blackout is Laurel, Maryland, which is located at approximately 39.09°N, 76.85°W.

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The horizontal velocity of the projectile it leaves the launcher is 0.283 m/s.

The horizontal speed of a projectile is regular, and there's a vertical acceleration because of gravity; its cost is 9.8 m/s/s, down, The vertical speed of a projectile changes via nine.8 m/s every second, The horizontal motion of a projectile is impartial to its vertical movement.

Projectile motion is a form of motion experienced with the aid of an object or particle that is projected in a gravitational field, such as from Earth's floor, and movements alongside a curved route below the action of gravity best.

Projectile motion is the movement of an object thrown (projected) into the air. After the initial force that launches the item, it most effectively reports the pressure of gravity. The object is known as a projectile, and its route is called its trajectory.

Calculation:-

Horizontal distance = 40 cm

                          = 0.4 m

height of table = 10 m

Let vertical velocity is 0.

S = ut +1/2 at²

10 = 0 + 0.5 × 10 t²

t² = 10/5

t    = 1.414 sec.

At the same time, it will take to cover a horizontal distance of 0.4 m.

Velocity = distance/time

                = 0.4/1,414

                  = 0.283 m/s

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Answer:

Both A and C

Explanation:

I just got it correct on Edg

Answer:

A and C is incorrect the real answer is B

Explanation:

Answer:

Explanation:

equal in magnitude and opposite in direction

Answer:

dd

Explanation:

I dont know I dont know I dont know I dont know

The required speed of the rock just before it reaches the water 23.0 m below the point where the rock left your hand is calculated to be 3.82 m/s.

The measurement of distance is the separation between two things or points. Typically, it is expressed in measures like meters, kilometers, miles, and feet. Distance can be used to gauge a journey's duration, a room's size, or the separation between two places. It can also be used to gauge an object's velocity, a mountain's elevation, or a lake's depth. Finding the shortest path between two places in daily life involves using distance, a key idea in both mathematics and science.

The time taken by the rock is given as 6 s.

The distance the rock below the point where the rock left your hand is 23 m.

The equation of speed, distance and time is known as,

⇒ 23/6 = 3.82 m/s

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The predicted consequences of the special theory of relativity seem so strange to most of us because they are obvious only at speeds that we never experience in our daily lives.

The theory of relativity, developed by Albert Einstein, is a framework for understanding the relationship between space and time, and how they are affected by gravity. It consists of two parts: the special theory of relativity and the general theory of relativity.

The special theory of relativity states that the laws of physics are the same for all observers in uniform motion relative to one another, and that the speed of light is constant for all observers. This means that time and space are not absolute but are relative to the observer's frame of reference.The general theory of relativity extends the special theory to include the effects of gravity. According to this theory, gravity is not a force between masses, but rather a curvature of spacetime caused by the presence of mass and energy.

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When light travels from one medium to another, it changes its direction due to the change in the speed of light. This change in direction is known as refraction. However, if the light hits the boundary at an angle less than the critical angle, it will undergo total internal reflection instead of refraction.

Total internal reflection occurs when the angle of incidence is greater than the critical angle, which is the angle of incidence that produces an angle of refraction of 90 degrees. At angles less than the critical angle, some of the light is refracted and some of it is reflected. However, when the angle of incidence exceeds the critical angle, all of the light is reflected back into the original medium.

This phenomenon is used in various applications such as optical fibers, periscopes, and binoculars. Optical fibers are used to transmit light over long distances without losing much of its intensity. They work on the principle of total internal reflection, where light is continuously reflected within the fiber without any loss of intensity.

In conclusion, total internal reflection occurs when light hits a boundary at less than the critical angle, resulting in all of the light being reflected back into the original medium. This phenomenon is utilized in various applications such as optical fibers, periscopes, and binoculars.

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The air pressure in the tires of a 980-kg car is 3.4×105 N/m2. It is important to maintain proper air pressure in car tires as it affects the handling, performance, and fuel efficiency of the vehicle.

The force that the Earth's atmosphere applies to the ground below is known as air pressure, commonly referred to as atmospheric pressure. The air molecules' gravitational attraction towards the Earth is what generates this pressure. The air pressure and density are increased due to the compression of the air molecules nearest to the Earth's surface. A barometer is often used to measure air pressure since it measures the force the atmosphere exerts on a unit of surface area. The pascal (Pa) is the accepted unit of measurement for air pressure, however millibars (mb) and inches of mercury (inHg) are also frequently used.

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True. Thomas Edison was the first to create a portable motion picture camera and projection system in 1889.

The Kinetograph was the name of the first movie camera. It was the first camera that could capture moving images on a strip of film. George Eastman (later of Eastman Kodak Camera) created celluloid film in 1889, which was utilized in Edison's Kinetoscope and Kinetograph.

Edison developed the camera as well as its viewer and put on multiple demonstrations of his invention. The first still photographers, Joseph Nicephone Niepce and Louis Daguerre of France, were responsible for discovering the photographic principles upon which the camera was founded. His invention, known as the Kinetoscope, consisted of a camera, film, and projection system.

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Explanation:

The vertical component describes the upward influence of the force upon Fido and the horizontal component describes the rightward influence of the force upon Fido.

Answer: C

Explanation:

Newton's Third Law of motion states that any action causes an equal and opposite reaction. This is the fundamental requirement for the conservation of classical momentum.

The force, in Newton's, on the player's bat is 18, 436 newtons. The correct option is C.

The word "force" has a specific meaning in science. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains." One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.

Although modest, the gravitational force has a relatively wide field of effect. Maturity is always appealing. Since mass is its source, it operates between any two particles of matter in the universe.

Every action results in a corresponding and opposing response, according to Newton's Third Law of Motion. The basic prerequisite for the conservation of classical momentum is this.

Therefore, the correct option is C. 18, 436 newtons.

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Answer:

The displacement would be 0

Explanation:

The displacement is the shortest distance between two points, and the distance traveled is the actual distance. It would be zero because a ball thrown into the air would come down and the shortest distance is 0.

Answer:

Astronomers refer to all the material between stars as interstellar matter; the entire collection of interstellar matter is called the interstellar medium (ISM). Some interstellar material is concentrated into giant clouds, each of which is known as a nebula (plural “nebulae,” Latin for “clouds”).

Explanation:

Astronomers use the term interstellar matter to refer to the material between stars, which is called the interstellar medium (ISM) and includes giant clouds known as nebulae.

Astronomers refer to all the material between stars as interstellar matter; the entire collection of interstellar matter is called the interstellar medium (ISM). Some interstellar material is concentrated into giant clouds, each of which is known as a nebula (plural "nebulae," Latin for "clouds"). The best-known nebulae are the ones that we can see glowing or reflecting visible light.

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Answer:

60 000 J

Explanation:

The PE will be converted to KE entirely (if the lowest point is ground level)

0 miles

Explanation:

delta displacment=position end-position beginning

The displacement of Adaline if she walks 2.0 miles north to school from her house. After school, she walks 2.0 miles south from the school to her house is zero miles so, option A is correct.

The overall modification of an object's location and direction of motion is referred to as displacement. Since displacement considers both the amount of the changing location and the direction of the motion, it is known as a vector quantity. There may be zero, positive, or negative displacement.

Given:

Adaline walks 2.0 miles north to school from her house. After school, she walks 2.0 miles south from the school to her house,

Calculate the displacement as shown below,

Displacement = Distance from house to school + Distance from school to house,

Displacement = 2 + (-2)  (North direction is taken as positive and south direction is taken as negative)

Displacement = 0 miles

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Answer/Explanation:

Part 1: 13 chromosomes.

Reproductive cell, male or female, whose nucleus contains only one chromosome of each pair (they are said to be haploid n = 13) and which unites with the gamete of the opposite sex (fertilization) to give birth to an egg (zygote 2n = 26 ) diploid resulting from the association of the two gametes with each his half of the genetic capital.

2. The process of creating a new flower is called reproduction.

Human reproduction is the process by which a man and a woman engender a new individual. It is a method of sexual reproduction.

Sexual reproduction requires:

The displacement due to the constant speed and the displacement due to the deceleration gives a total displacement of 238.5 mi.

Displacement is the measurement of how far an object has moved from its initial position. It is commonly expressed in terms of distance and direction, and is often measured in terms of meters or kilometers. Displacement is a vector quantity, meaning it has both magnitude and direction.

The total displacement of the jetliner between touchdown and coming to rest can be calculated by adding the displacement due to the constant speed for 1.1 seconds and the displacement due to the deceleration over the same time period.

The displacement due to the constant speed of 143 mi/h for 1.1 s is found by multiplying the speed (143 mi/h) by the time (1.1 s) to get 159.3 mi.
The displacement due to the deceleration is found by calculating the average speed of the jetliner between touchdown and coming to rest, then multiplying this average speed by the time (1.1 s). The average speed of the jetliner is found by taking the difference between its initial speed (143 mi/h) and its final speed (0 mi/h) and dividing it by 2. This gives an average speed of 71.5 mi/h. Multiplying this average speed by the time (1.1 s) gives a displacement due to deceleration of 79.2 mi.
Adding the displacement due to the constant speed and the displacement due to the deceleration gives a total displacement of 238.5 mi.

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Answer #1:

Physical.

Explanation:

The only thing mentioned to change is the color. Nothing about the gas in general is changing

Answer #2:

Chemical.

Explanation:

The fact this interacted with another element to completely turn something else rather than just being that color makes this a chemical change.

Answer #3:

Physical

Explanation:

Well, how does an element's density have to do anything with a chemical change?

Answer #4:

Chemical.

Explanation:

Fire/heat is involved, and it makes it change states.

The correct prescription for the eyeglasses that would serve the same purpose as the contact lenses is +2.40 diopters.

When wearing the contact lenses with a refractive power of 1.90 diopters, the man is able to read books held no closer than 0.265 m from his eyes. To find the prescription for the eyeglasses, we need to calculate the additional refractive power required to achieve the same focusing ability at a different distance. Using the lens formula

1/f = 1/v - 1/u,

where f is the focal length, v is the image distance, and u is the object distance, we can calculate the focal length of the contact lenses.

Since the person can read books held no closer than 0.265 m, the object distance (u) would be 0.265 m. The image distance (v) would be the distance from the contact lenses to the eyes, which is 0.020 m. The calculated prescription for the eyeglasses is +2.40 diopters, which means that eyeglasses with a refractive power of +2.40 diopters would enable the man to read books held at a distance of 0.020 m.

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Answer:

nuclear fission

Explanation:

nuclear fission

Answer: Nuclear fission

Explanation:

Explanation:

Momentum of an object is defined as the product of the mass of object and the velocity with which it is moving.

p = mv

where, p = momentum, m= mass and v= velocity

mass m = 0.7 Kg and v = 20 m/s

p = 0.7×20 = 14 Kg-m/sec

Therefore, momentum of the object  = 14 kg-m

The main difference between Ptolemy's and Copernicus' solar system models is that Ptolemy's model placed the Earth at the center with the Sun and planets orbiting around it, while Copernicus' model positioned the Sun at the center with the Earth and other planets orbiting around it.

Ptolemy's model, known as the geocentric model, proposed that the Earth was at the center of the universe, and all celestial bodies, including the Sun and planets, revolved around it in circular orbits. This model was based on observations and was widely accepted for many centuries. However, in Ptolemy's model, to account for the apparent retrograde motion of the planets, complicated systems of epicycles and deferents were introduced.

In contrast, Copernicus' model, known as the heliocentric model, challenged the geocentric view by placing the Sun at the center of the solar system. According to Copernicus, the Earth and the other planets orbited around the Sun in circular orbits. This simplified the explanation of planetary motion and eliminated the need for complex systems of epicycles and deferents.

Copernicus' heliocentric model gained support with advancements in observational technology and mathematical calculations. It provided a more accurate explanation of celestial phenomena, such as the retrograde motion of the planets, and laid the foundation for our modern understanding of the solar system.

The key distinction between Ptolemy's and Copernicus' models is the placement of the Earth and the Sun in their respective centers, with Ptolemy's model favoring a geocentric perspective and Copernicus' model proposing a heliocentric view.

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Only P-waves reach the side of Earth that is opposite the focus because P-waves option 4:  can travel through liquids and S-waves cannot.

A P wave is known to be a compressional wave. This is seen as  a kind of a seismic body wave that often moves or shakes the ground a lot in the same direction and also in its opposite direction as the  wave moving direction.

Note that the P waves can be able to move via liquid and solids and gases, but the S waves can only move through solids.

Hence, Only P-waves reach the side of Earth that is opposite the focus because P-waves option 4:  can travel through liquids and S-waves cannot.

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Answer:

It means that 400 J of heat is the required amount to raise or lower thh temperature of a 1kg piece of copper

Explanation:

390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C

From the given information,

The specific heat capacity of copper is 390 J/Kg °C. To determine what this means, we will define the term specific heat capacity.

The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1 kg of the substance by 1 °C.

Therefore, 390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C.

Hence, 390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C.

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Answer:

Carbon Dioxide is a compound and not an element.

Answer:

Carbon dioxide is a compound.

Explanation:

Elements are when you only have one type of atom that makes it up. Carbon dioxide is made up of two different types of atoms.