Physics High School

## Answers

**Answer 1**

The **situations **that sonar be most practical is option A: Measuring the distance between **objects **in the ocean.

What is the distance about?

Sonar, short for sound **navigation** and ranging, is a technology that uses sound waves to determine the distance and location of objects in the ocean.

Therefore, It works by emitting a **sound **wave and measuring the time it takes for the wave to bounce back, which allows the system to calculate the distance to the object. This technology is commonly used in navigation, search and rescue, and underwater mapping.

Learn more about **distance **from

https://brainly.com/question/26550516

#SPJ1

## Related Questions

The creator of the diagram above considers gerrymandering to be "stealing an election." How do the maps exemplify this?

OA. Map A is fair to members of the Red Party.

OB. Map B is fair to members of the Blue Party.

O C. The maps show representation that is proportional to the voters registered with each party.

O D. Both maps give disproportionate representation to the party that had the power to draw the lines.

M

31

DELL

### Answers

**District-based voting** is used to choose representatives in Congress, state legislatures, and many county and municipal positions. In contrast, populations shift. Depending on the district, folks may move in or move out. The demographics of districts may also shift.

Option C is correct Answer.

Why does redistricting matter?**Election power **is impacted by redistricting. It decides which political party rules the US Congress as well as the state and municipal governments. Redistricting so **directly influences** which issues a legislature decides to address and which to disregard.Also impacted by redistricting is the representation of the varied populations in the country's legislative bodies. By using redistricting, for instance, one can guarantee that communities of color have an equal opportunity to choose politicians who share their perspective and will support their issues. Another option is to deny them a place at the table. same goes for all other categories of communities of interest.

To Learn more About **District-based voting** Refer To:

**https://brainly.com/question/10284894**

#SPJ1

Help please thank you

### Answers

**Answer: Sun**

**Explanation:**

Pretty sure it's the sun because the others can't generate electrical energy

A transformer is opperating at a power of 508 w. The primary coil has 17 A of current 88 turns, the secondary coil has 42 turns. What is the voltage in the

secondary transformer? Round to 2 decimal places.

### Answers

The **voltage **in the secondary transformer will be 14.26V.

How can you tell the difference between a transformer's primary and secondary windings?

Primarily wound is always on the input side. The side connected to the voltage source is always on this side. **Secondary windings** are always the output side. Always **connected **to the load is this side.

Given, Power = 508 W

current in primary coil, i = 17A

number of turns in **primary coil**, N1 = 88

number of turns in secondary coil, N2 = 42

by using power formula, P = Vi **voltage **of primary coil can be calculated,

P = V1×i

508 = V1 × 17

V1 = 508/17

V1 = 29.88 V

now voltage of **secondary coil**, V2 = (N2/N1) × V1

V2 = (42/88)×29.88

V2 = 1254.96/88

V2 = 14.26 V

The voltage in the secondary transformer will be **14.26V**.

To know more about **Transformer **visit

https://brainly.com/question/15200241

#SPJ1

A rocket ship has several engines and thrusters. While the solid rocket booster (srb) and main engines only work together during the first 2 minutes of flight, the main engines operate for a total of 8. 5 minutes after the launch. Once the srbs are released, the main engines alone accelerate the rocket from about 1341 m/s to 7600 m/s.

### Answers

**A rocket ship** has several engines and thrusters. While the **solid rocket booster (srb)** and main engines only work together during the first 2 minutes of flight, the main engines operate for a total of 8. 5 minutes after the launch. Once the srbs are released, the main engines alone accelerate the rocket from about 1341 m/s to 7600 m/s. During the first two minutes of flight, the SRB and main engine accelerate at a rate of 52.16 m/s2.

**Acceleration** is the rate at which a moving object's speed and direction change over time. When something moves faster or slower, it is considered to be accelerating. The engine's** initial velocit**y (u), final velocity (v), and time of motion (t), which is equivalent to two minutes, are the parameters given (2 x 60 s).

The calculations for **the main engine's **and** SRB's acceleration** are listed below.

a= Δv / Δt

a=7600-1341 /2*60s

a=52.16 m/s²

As a result, during the first **two minutes of flight,** the main engine and SRB accelerate at a rate of 52.16 m/s2.

Your question is incomplete but most probably your full question is

A rocket ship has several engines and thrusters. While the Solid Rocket Booster (SRB) and main engines only work together during the first 2 minutes of flight, the main engines operate for a total of 8.5 minutes after the launch. Once the SRBS are released, the main engines alone accelerate the rocket from about 1341 m/s to 7600 m/s.

What is the height of the rocket when the rocket reaches the speed of 7600 m/s? Show your work.

Learn more about** acceleration** here-

brainly.com/question/12550364

#SPJ4

What is difference between EV and HEV PHEV?

### Answers

**EVs** lack an internal combustion engine, also confusingly referred to as BEVs (battery electric **vehicles**), which transform gasoline into propulsion power.

Instead, they only use the power from one or more sizable batteries to operate. When it comes to** EVs**, hybrids were the first significant market entrant, especially after the Prius' international launch in the early 2000s. These cars mastered the technique of alternating between an internal combustion **engine** and an electric motor to increase fuel efficiency. A plug-in hybrid electric vehicle (**PHEV**) is designed to run on both gas and battery power and is essentially a hybrid of an EV and an **HEV**. The main distinction is that they are more EV-like because the power is provided via plug-in **chargers**.

Want to know more about **vehicles **visit the link which is given below;

https://brainly.com/question/24745369

#SPJ4

How far would a car travel in 3 s if it's acceleration was 5 m/s²?

12.5 m

22.5 m

15.0 m

0.4 m

1.6 m

### Answers

The **distance** a car will travel in 3 s if it's acceleration was 5 m/s² is **22.5m** and is denoted as option **B**.

What is Acceleration?

This is defined as the rate at which **velocity** changes with **time** and is usually in terms of both speed and direction which makes it a vector quantity.

Acceleration = velocity / time

5 m/s² = v / 3s

v = 15m/s.

To calculate the distance we can use:

D = 1/2*a*t²

= 1/2 × 5 × 3²

= **22.5m**.

Read more about **Velocity** here https://brainly.com/question/25749514

#SPJ1

a stone tumbles into a mine shaft and strikes bottom after falling for 4.2 seconds. how deep is the mine shaft

### Answers

The **mine shaft** has been found to be exactly about 84 m deep.

How deep is it?

Let us know that in this case, we have to look at the equation of the motion that is taking place under **gravity**. This is because, we we can see, the shaft that we have would appear to have been **falling **freely under the influence of the force of gravity.

We have;

h = ut + 1/2gt^2

h = height

u = initial velocity

g = acceleration due to gravity

t = time taken

Given that u = 0 m/s

h = 1/2gt^2

h = 0.5 * 9.8 * 4.2^2

h = 84 m

Learn more about **distance covered**:https://brainly.com/question/20330990

#SPJ1

A student performs an experiment to determine the volume of hydrogen gas produced when a given mass.

### Answers

A student performs an **experiment** to determine the volume of hydrogen gas produced when a given mass.

To determine the volume of** hydrogen gas** produced in a chemical reaction, the student likely performed a series of steps. Here is an example procedure that the student may have followed

Measure the mass of the **reactant** that will produce the hydrogen gas.Prepare the **apparatus **by filling a gas collection tube with water and inverting it over a water bath.Add the reactant to the **reaction **vessel, which may be a flask or test tube.Seal the reaction vessel and start a **stopwatch** to record the reaction time.Observe the **gas bubbles** rising through the water in the collection tube.Once the reaction has completed, stop the stopwatch and measure the **volume **of gas collected in the tube.Adjust the volume measurement for **temperature** and pressure, if necessary, using the ideal gas law.

Hence, by following this procedure, the student should be able to determine the volume of hydrogen gas produced when a given mass of reactant is used. This information can then be used to calculate the stoichiometry of the reaction, determine reaction rate, or make other useful observations about the** chemical system** under study.

To know more about **experiment** here

https://brainly.com/question/13981167

#SPJ1

If a van traveled 225 miles in 5 hours, how far could the van travel in 7 hours?.

### Answers

If a van traveled 225 miles in 5 hours, then the van could **travel **315 miles in 7 hours.

What is mile?

A mile is a unit of length in the imperial and United States customary systems of **measurement**. One mile is equal to 5,280 feet, 1,760 yards, or 1.609 kilometers. The word mile is derived from the Latin mille passus, meaning "a thousand paces." The mile was historically used as a unit of measurement for roads, and was once considered a basic unit of measurement in many countries, although usage has changed over time.

To determine how far a van could travel in 7 hours, you would need to know its **average speed**. If the van traveled 225 miles in 5 hours, you can calculate its average speed by dividing the distance traveled by the time it took to travel that distance:

225 miles / 5 hours = 45 miles per hour

Once you know the average speed of the van, you can calculate how far it could travel in 7 hours by multiplying the speed by the time:

45 miles per hour x 7 hours = 315 miles

So the van could travel 315 miles in 7 hours.

To learn more about **Mile **visit:

brainly.com/question/24421917

#SPJ4

An elevator weighing 230000 n is supported by a steel cable. What is the tension in the cable when the elevator accelerates down at a rate of 3. 7 m/s2 rounded to the nearest tenth?.

### Answers

The required tension in the cable when the** elevator** accelerates down at a rate of 3. 7 m/s2 is 143163.26 N.

What is acceleration?

The rate at which** velocity** changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily. An item that follows a **circular** course while maintaining a constant speed is still moving forward because the direction of its **motion** is shifting.

According to question:

We have,

Weight = 230000N, **Mass** of elevator = 23469.38 kg

a = 3.7 m/s^2

So, by free body concept

230000 - T = 23469.38 kg(3.7)

230000 - T = 86836.74

T = 143163.26 N

Thus, required tension in **string i**s 143163.26 N.

To know more about **Tension in string** visit:

brainly.com/question/4087119

#SPJ4

Mike jumps 1 m down onto a walkway. His downward motion stops in 0. 02 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones? mike's mass is 70-kg.

### Answers

The force that transmitted into his leg bones are **15479.52 N**. We use third law of kinematic equation to find it.

**How to find the force transmitted to his leg bones?**

First, we have to find the value of his** velocity **when he stop using the third kinematic equation.

V₂² = V₀² + 2 x g x h

V₂² = 0 + 2 x 9.8 x 1

V₂ = 4.42 m/s

Then find the **acceleration** he has as follow:

a = (V₂-V₁) : t

a = [tex]\frac{4.42-0}{0.02}[/tex]

a = 221.136 m/s

Then, find the** force** that we want to know by:

F = m x a

F = 70 x 221.136

F = 15479.52 N

Learn more about **force** here

https://brainly.com/question/12970081

#SPJ4

I need someone to explain this to me, I am confuse when it comes to this worksheet

### Answers

The mathematical formula for **frequency **and speed relationship is v = λf, where v denotes the wave's speed in meters per second, λ the wave's wavelength in meters, and f the wave's frequency in Hertz.

In a transverse wave, how is amplitude measured?

The largest deviation of any point on the string from its position when the string is at rest serves as the **amplitude **measurement for **transverse waves**, as the wave on a plucked string.

What are the transverse wave's amplitude and wavelength?

In this demonstration, the distance between the stick's maximum vertical **displacement **and its **equilibrium point** will determine a wave's amplitude (the point of zero displacement). The overall distance a wave travels during a single complete cycle is known as its wavelength (λ).

To know more about **Transverse wave** visit

https://brainly.com/question/13863548

#SPJ1

What is the velocity of a ball that is thrown 8 meters toward 3rd base in 4 seconds

### Answers

**Answer:**

V=∆s/∆t

V=800/4

V=200

you have to change 8meters into centimeters and please let me know if I'm wrong

Two airplanes are flying in the sky in such a way that gravitational attractions between them decreases. The planes must be flying away from each other.

### Answers

According to the given statement The **planes **must be flying away from each other.

Why is gravitational attraction?

It is a characteristic of things, of substance. All matter is drawn to all other matter, to put it simply. The stronger the **attraction **between things, the more substance there is, and also the closer together the items are. Gravity constantly draws objects together, unlike power and magnetism, which may either attract or repel.

Is the gravitational attraction a theory?

Regarding the law of attraction, the concept of universal **gravitation **is a theory, not an established reality. It is important to approach this information with only an open mind and to thoroughly read through and think about it. In spite of the fact that it is not even a good hypothesis, the General Theory of Gravity is frequently taught in schools as truth.

To know more about **Gravitational attractions **visit:

https://brainly.com/question/19822389

#SPJ4

The complete question is -

Two airplanes are flying in the sky in such a way that the gravitational attractions between them decreases ?

a truck hits a brick wall with a force of 100 000 kg m/s2. the truck comes to a stop in 0.5 s. calculate the impulse the truck experienced

### Answers

**Answer:**

[tex]\huge\boxed{\sf I = 50,000\ Ns}[/tex]

**Explanation:**

Given data:

Force = F = 100,000 N

Time = t = 0.5 s

Required:

Impulse = I = ?

Formula:

I = F × t

Solution:

I = 100,000 × 0.5

**I = 50,000 Ns**

[tex]\rule[225]{225}{2}[/tex]

How can a protective device minimizethe magnitude of the net

force acting on an egg in a cart during a collision?

### Answers

A protective device such as an egg carton, foam padding, or bubble wrap can be used to minimize the **magnitude **of the net force acting on an egg in a cart during a collision by providing cushioning some of the impact.

**What is magnitude?Magnitude** refers to the size or scale of an object, event, or phenomenon. It is typically used to describe the intensity or

**amplitude**of a physical quantity, such as the strength of an earthquake or the brightness of a star. Magnitude is also used to quantify the size of a population, the severity of an

**economic downturn**, or the power of a political movement. Magnitude is usually expressed as a

**numerical value**, such as a number on a Richter scale or a magnitude rating on a star catalog.

**Magnitude**can also be expressed in terms of a relative or subjective scale, such as a rating of “strong” or “weak” for an earthquake. Magnitude is often used in

**scientific research**to quantify the size of a phenomenon, such as the magnitude of climate change or the magnitude of a new medical breakthrough.

To learn more about **magnitude**

https://brainly.com/question/24468862

#SPJ1

What is the relationship between current and voltage across a circuit?

O inversely proportional

O no relationship

O joint variation

O directly proportional

### Answers

The** relationship** between current and voltage across a circuit is directly proportional. It is given as per the **Ohm's law**. Thus, the correct option is **D**.

What is Ohm's law?

**Ohm's law** states that the current in an **electric circuit **through a conductor between the two points is** directly proportional **to the voltage across the two points of the conductor. Introducing the constant of proportionality, the resistance (R), where one arrives at the usual **mathematical equation **which describes this relationship:

**I = V/ R**

**V = IR**

where, I is the electric current flowing through the circuit,

V is the voltage of the electric circuit,

R is the resistance across the electric circuit

More specifically, the **Ohm's law** states that the R in this relation is a constant, which is independent of the electric current in the circuit.

Therefore, the correct option is** D**.

Learn more about** Ohm's law **here:

https://brainly.com/question/1247379

#SPJ1

Please help, will give brainiest

QUESTION 1.

Element X on Planet Qatar has three known isotopes: X-121 with a relative abundance of 43.2%, X-123 with a relative abundance of 53.1%, and X-129 with a relative abundance of 3.70%. What is the average atomic mass in amu of Element X given this information?

QUESTION 2.

How did Rutherford's experiment change the way scientists had previously viewed atomic structure? How did this pave the way for subsequent changes up to and including the currently accepted quantum mechanical atomic model?

QUESTION 3.

How is percent abundance related to average atomic mass?

### Answers

a) The **relative atomic mass** is 122.35 amu

b) The **Rutherford **model introduced the planetary model

c) The percentage abundance shows how much of that mass is present.

What is the relative atomic mass?

We have to know that as what we need here is the relative atomic mass of the element X then we must have to be able to look at the weighted average of all the isotopes that have been shown to belong to the **element **that is in question called X.

Thus we would have;

(121 * 0.432) + (123 * 0.531) + (129 * 0.037)

= 52.27 + 65.31 + 4.773

= 122.35 **amu**

Learn more about** atomic mass**:https://brainly.com/question/17067547

#SPJ1

Scenario

Consider a coin of massm placed on a rotating surface a

distance R from the axis of rotation. The surface rotates with a

period T. There are some locations on the surface where the coin

can be placed and the force of static friction will not allow the com

to slip. At other locations, the coin will slip because static friction or

not strong enough to present the coin from slipping. The coefficient

of static fraction between the coin and the surface is u

### Answers

The coefficient of the **static friction**(ц) between the coin and the surface is v²/gR.

The mass of the coin = m kg

The distance of the coin from the axis of **rotation** = R meter

Let the speed of the rotating surface = v m/sec

We know that an object moving in a **circular motion** on a circular path of radius R, experiences a centrifugal force which acts outwards from the axis of rotation. This force is determined by the following formula,

F = mv²/R

This **force** is balance by the static friction force on the coin.

Static friction force on the coin = mg × static friction(ц)

mv²/R = mg × static friction(ц)

Static friction(ц) = v²/gR

To know more about **static friction**, here

https://brainly.com/question/24882156

#SPJ4

How to calculate the energy tranformed from the water in the kettle to the urrounding in 2 hour i 4600 J when the ma i 0. 50kg heat capacity i 4200 J/kg and initial temperature i 100°

### Answers

The **energy transformed** from the water in the kettle to the surrounding water loses 4200 J/kg °C * 0.5 kg = 2100 J/°C.

As it's lost 46,200 J in total (regardless of the time it took for this to happen), it must have reduced in **temperature **by 22 degrees. Assuming 100°C initially, temperature of water in kettle is now 78°C.

The purpose of this experiment is to determine the specific heat of two metal blocks. In one of these measurements you will also investigate the use of** Newton's Law** of Cooling to calculate a cooling correction. The units of specific heat in SI are J / kg ˚C.

When a body of mass M at temperature T1 receives an amount of heat (or energy) Q, its temperature may increase from T1 to T2. The **heat capacity** C of a body is the amount of heat required to raise its temperature by one (Kelvin) degree.

To know more about **energy transformed **here

https://brainly.com/question/26547865

#SPJ4

The purpose of refrigerant going through a restriction is to change all of these refrigerant characteristics EXCEPT:

### Answers

The purpose of refrigerant going through a restriction is to change all of these refrigerant characteristics except is **pressure**.

What is **pressure?**

Pressure is the amount of force applied over a given area. It is measured in units such as **pounds per square inch (psi)**. Pressure can be applied to a variety of things including gases, liquids, solids, and vacuums. It can be caused by a variety of sources, such as gravity, electromagnetic fields, and electric currents. Pressure can also be applied to change the **physical properties** of a substance such as its temperature, density, or viscosity. It can be used to move objects, create energy, and form objects. Pressure is an important concept in many areas of science, ranging from physics to engineering.

To learn more about **pressure**https://brainly.com/question/912155

#SPJ4

Convert 3600 s to hr

show all work please and thank you! (SHOW ALL WORK) thanks<3 ill give brainlist

### Answers

To convert time to hours from seconds, you have to divide the total seconds by 3600.

[tex]\dfrac{3600}{3600} =\texttt{1 hour}[/tex]

3600 seconds would be 1 hour.

1 minute/60 minutes = 60seconds/X

(1minutes)(X) = (60 seconds *60 minutes)

Solve for X

X= 3600/1

X= 3600 seconds

PLEASE HELP

Fill in the blanks to correctly complete the statement.

The motion of an object moving with uniform circular motion is always_______

to the circle, so the speed of an object moving in a circle is known as _______

speed.

### Answers

**Answer:**

The first one is tangent, second is tangential.

A substance did not change its chemical nature in a reaction. Which most likely describes the reaction?

### Answers

**Answer:**

The substance would of been frozen

**Explanation:**

A substance did not change its chemical nature in a reaction. Which most likely describes the reaction? It was frozen.

Express, in terms of x, the value, in cents. of x pounds of 40-cent cookies and (30-x) pounds of 50-cent cookies.

### Answers

The value, in cents. of x **pounds** of 40-cent cookies and (30-x) pounds of 50-cent cookies are x(40) + (30-x)(50) = 40x + 1500 - 50x = 1500 - 10x

What is pound?

The pound is a mass and** weight measurement** unit that is used in both the imperial and American customary systems. It is equal to 16 ounces or 0.45359237 kilograms. It is used in a variety of contexts, including engineering, commerce and finance, as well as everyday use. In the United Kingdom and other countries of the Commonwealth of Nations, it is the basis of their **currency**; one pound sterling is equal to 100 pence. The origin of the pound dates back to the Roman Empire, when it was known as the libra.

To learn more about **pound**https://brainly.com/question/29310965

#SPJ4

According to the given statement 1500 -10xrepresents the **equation **in terms of x.

Is pound a mass or force?

The term "pound" can also refer to a **unit of mass** in other situations. The pound is a unit of mass, and the international standard sign for it is lb. The weight of the mass unit (pound-mass) onto Earth's surface is about equivalent to the force unit in the "engineering" categories (middle column) (pound-force).

We are assigned the task of expressing an equation in terms of x using the provided information.

In this case, we must multiply the pounds by the number of cookies.

Where,

x=pounds × cent cookies

In light of the fact that for x pounds of 40 **cent cookies**.

And (30-x) pounds of 50 cent cookies

Let us form an equations in terms of x:

⇒40x+50(30−x)

⇒40x+1500−50x

⇒1500−10x

As a result, 1500 -10xrepresents the equation in terms of x.

To know more about **Pounds **visit:

https://brainly.com/question/23942137

#SPJ4

A student is connecting three resistors of various resistances together in a circuit. In one configuration, the resistors are connected in a series. In another configuration, the resistors are connected in parallel. Explain which configuration results in a higher total resistance.

### Answers

The configuration with the resistors connected in series results in a higher total **resistance**.

**What is the difference between a series and parallel circuit configuration?**

A series circuit configuration is one in which the electrical components are connected end-to-end, so that the **current **must flow through each component before reaching the next one. This means that the current is the same through all components, and the total** resistance **of the circuit is equal to the sum of the individual resistances. In contrast, a parallel circuit configuration is one in which the electrical components are connected side-by-side, so that the current can flow through multiple components at the same time. This means that the voltage across all components is the same, and the total resistance of the circuit is lower than the smallest individual resistance.

To know more about **Resistance** visit : https://brainly.com/question/14547003

#SPJ1

Jordyn places a balloon near some paper scraps, but nothing happens. After Jordyn

rubs the balloon against her shirt, the paper scraps start sticking to the balloon.

Jordyn's teacher notes that there is now an electric force between the balloon and

the paper.

What could have happened when the balloon was rubbed on Jordyn's shirt to cause

this electric force?

The balloon has gained a net electric charge.

The balloon has lost its net electric charge.

The net electric charge of the balloon did not change.

### Answers

A **balloon** absorbs electrons from a wool fabric when it is rubbed against it, leaving the balloon with a negative charge and the wool with a **positive charge.**

Is there static electricity in a balloon?

**Electrons** from the atoms and molecules in your hair migrate to the balloon when you brush it against your head. The balloon acquires a negative charge thanks to the **negative charge** of electrons, but your hair retains a positive charge.

Electrons **migrate** from the hair or wool to the balloon when the balloon is rubbed against it. The balloon picks up a net negative charge because electrons have a negative charge. The can rolls because the positive charges in the can are drawn to the negative charges in the balloon.

learn more about **static electricity** refer

**https://brainly.com/question/18562731**

#SPJ1

A boat attempts to cross a river going 12.0 mi/hr from the South bank travelling in a Northward direction. The river flows West at 5.0 mi/hr. What is the actual velocity of the boat? The answer should be in magnitude-direction form.

### Answers

The** actual velocity **of the boat is **13.0 mi/hr** at an angle **67.38° north-west **respect to south bank.

What is velocity?

The rate at which a body's displacement changes in relation to time is known as its **velocity**. Velocity is a vector quantity with both magnitude and direction. SI unit of **velocity **is meter/second.

The **actual velocity **of the boat = √(12.0²+5.0²) mi/hr = 13.0 mi/hr.

The **direction **of the velocity of the boat w.r.t south bank = tan⁻¹(12/5) = **67.38⁰.**

Hence, The actual **velocity **of the boat is** 13.0 mi/hr **at an angle** 67.38° north-west** respect to south bank.

Learn more about **velocity **here:

https://brainly.com/question/18084516

#SPJ1

A yellow lamp emits light with a wavelength of 6.00 · 10-7 m. How many such photons are required to produce 10.0 joules worth of photons? _____ photons 7.52 x 10 48 3.01 x 10 19 3.01 x 10 49 3.32 x 10 -18

### Answers

A yellow lamp emits light with a wavelength of 6.00 ·**. 3.01 x 10 19 photons** such photons are required to produce 10.0 joules worth of photons.

Why are photons immortal?

The **quanta** that make up light are called photons, and in the absence of any other interactions that would cause their characteristics to change, they remain ethereally stable with no indication that they would transform into any other particle.

In addition to releasing energy and generating heat, chemical activities within your body also release small **quantities of photons**, which are fundamental **light particles**. The bottom portion of your face and late afternoon are when the glow is most prominent.

learn more about **photons **

**https://brainly.com/question/15946945**

#SPJ1

What describes the speed of a planet traveling in an elliptical orbit around the sun? a. Constant b. Fastest when closest to the sun c. Slowest when closest to the sun d. Fastest when closest to the moon.

### Answers

The speed of a **planet** traveling in an **elliptical orbit** around the sun is b. Fastest when closest to the sun.

ABOUT ELLIPTICAL ORBIT

The **planets** in the solar system revolve around the sun in certain paths called **orbits** or orbits that are elliptical, not circular.

In ancient times, humans adhered to geocentric understanding. This theory was introduced by the Greek astronomer Claudius Ptolemy in 100-170 AD.

This belief persisted for 1,400 years. According to him, the earth is the center of the solar system. The sun and **planets** revolve around the earth in a circular path.

Then in 1543, the astronomer Nicolaus Copernicus sparked the Heliocentric model. According to him, the Earth and other planets revolve around the Sun in circular paths. This theory is better than ever. Although, the assumption that the trajectory of a planet's motion is still in the form of a circle.

The planet's orbit is **elliptical** due to the gravitational interaction between the planet and the sun and other celestial bodies. Johannes Kepler in the 1600s was the first to discuss the shape of planetary orbits.

Learn more about **elliptical orbit** at

https://brainly.com/question/18283031.

#SPJ4

**Answer: B.**

fastest when closest to the Sun

**Explanation: plato :3**

Hope this helps!