A paper plane moving through the air experiences air _____ .

Frictional forces acting on an object are often converted into ______

energy, which causes the temperature of the object to rise slightly.

Answer:

Resistance and thermal

Explanation:

Edge 2020

A paper plane moving through the **air** experiences **air resistance**.

**Frictional forces** acting on an object are often converted into **thermal energy**, which causes the **temperature** of the object to rise slightly.

**Friction** is the **force **resisting the relative **motion **of solid surfaces, fluid layers, and material elements sliding against each other.

**Thermal energy** refers to the **energy** contained within a system that is responsible for its **temperature**. Heat is the flow of **thermal energy**.

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Write a brief summary of table tennis or tennis

Table tennis (or Ping Pong as it is more commonly known in the US) was invented in 1880s Victorian England. It was an adaptation the popular game lawn tennis as a way of continuing to play inside during the winter when it was too cold to play outside.

**Answer:**

A point is won by a player when the opponent cannot hit the ball with a racket over the net and onto the other side of the table. Each game is won by being the first player to win 11 points, and be at least 2 points ahead of their opponent. The equipment needed to play table tennis would be a table, rackets, and balls. Some of the rules are no hand-on table (even leaning your hands on the table is not allowed!) Also, if the ball hits the net, you have to serve again.

Mr. Mehta cut several 275-centimeter lengths of wallpaper to put in his

dining room. How many meters long was each piece of wallpaper?

**Answer:**

2.75 meters.

**Explanation:**

1 meter = 100 centimeters.

There are 275 centimeters.

275/100=2.75

So, each piece of wallpaper was 2.75 meters long.

Answer:

Think

Explanation:

An object moves 120 m in 15 seconds. Calculate

the object's speed.

**Answer:**

8m/s

**Explanation:**

speed= distance/time

s= 120/15

= 8m/s

Determine the average speed of an object that travels 200 miles in 4 hours.

**Answer:**

The average speed is 50 miles per hour

**Explanation:**

Speed is equals to distance divided by time

Then substitute your variables into the equation

Hope this helps

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4. A cylindrical tube has a length of 14.4cm and a radius of 1.5cm and is filled with a colorless gas. If the density of the gas is known to be 0.00123g/cm', what is the mass of the gas in the tube in mg?

**Answer:**

Mass, m of gas is 0.2504 grams.

**Explanation:**

First, we need to solve for the volume of the cylindrical tube.

Volume of cylinder is given by the formula;

[tex] V = 2\Pi r^{2}h[/tex]

Where, V represents volume.

π represents pie

r represents radius.

h represents height or length.

Given the following data;

Radius, r = 1.5cm

Length, h = 14.4cm

Density, d = 0.00123g/cm³

Substituting into the equation;

[tex] V = 2 * 3.142 * (1.5)^{2}14.4[/tex]

[tex] V = 2 * 3.142 * 2.25 * 14.4[/tex]

[tex] V = 203. 6016[/tex]

Therefore, the volume of the cylindrical tube is 203. 6016cm³

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the formula;

[tex]Density = \frac{mass}{volume}[/tex]

[tex] Mass = density * volume [/tex]

Substituting into the equation, we have;

[tex] Mass = 0.00123 * 203. 6016 [/tex]

Mass = 0.2504g.

Atomic theory describes the motion of particles in solids, liquids, and gases. Which statement best describes the particles in a given state of matter?

A. The particles in gases have a fixed position but can vibrate.

B. The particles in solids have a fixed position but can vibrate.

C. The particles in solids are very close to each other but they are able to move past each other. D. The particles in gases are very close to each other but they are able to move past each other.

B is the answer because a solid would not be able to hold its shape if it was able to move around

**Answer:**

B. The particles in solids have a fixed position but can vibrate

**Explanation:**

Answer choice "A" is incorrect because particles in gases are not held by bonds and move freely (not fixed).

Answer choice "C" is incorrect because while solids are close in proximity, their particles do not move past each other.

Answer choice "D" is incorrect because while the particles in gases are able to move past each other, they are not arranged in close proximity. In fact, them being spread out and free is why they are able to move past each other.

Which of the following are examples of acceleration?

A. A car speeds up after getting on a highway.

B. A car travels at a constant velocity on a highway.

C. A car slows down to exit a highway.

D. A car rounds a sharp curve on an off ramp at a constant speed.

**Answer:**

A, B, and D.

**Explanation:**

I've answered this exact question on a quiz. Hope it's not too late!

**Answer:**

A

C

D

Is the right answers not A.B,D.

trust

A 7kg of ball experiences a net force of 5N, what will be its acceleration.

0.7 m/s

explanation:

5/7= 0.7 m/s

explanation:

5/7= 0.7 m/s

In a certain semiconducting material the charge carriers each have a charge of 1.6 x 10-19

C. How many are entering the semiconductor per second when the current is 2.0 nA?

**Answer:**

1124923453 electrons

**Explanation:**

The formula for charge in coulomb ,C =Current in amperes, A * Time in seconds, s

Given in question ;

Charge = 1.6 * 10⁻¹⁹ C

Current = 2.0 nA = 2*e⁻⁹ A

Calculate time in seconds as

1.6 * 10⁻¹⁹ = 2*e⁻⁹ * t

1.6 * 10⁻¹⁹ /2*e⁻⁹ = t

6.48e⁻¹⁶ s = t

So using t=6.48e⁻¹⁶ s and current =2*e⁻⁹ A , the charge will be;

C = 2*e⁻⁹ * 6.48e⁻¹⁶ =1.799e⁻¹⁰ C

But 1 coulomb = 6.25 x 10¹⁸ electrons

so 1.799e⁻¹⁰ C = ?,,,,{ 6.25 x 10¹⁸} *{1.799e⁻¹⁰} = 1124923453.06 electrons

When performing a standard push-up, our hands should be placed on the ground... as close together as possible to make it the most challenging as close together as possible to make it the most challenging really wide to focus on chest development really wide to focus on chest development just outside our shoulders

Answer:

Kindly check the explanation section.

Explanation:

The statement given in the question or problem above is true or let's say it is correct. And the statement describes different kinds or types of push up.

Push up is a kind of excercise that is being done mainly to strengthen the arm and the cheat. The way one goes about it determines which part of the body one is strengthening.

The kind of push up in which one has to close up the gap between his or hands is known as the close push ups. This kind of push up strengthens the arm more than the other part of the body and the more one puts his or her hands closer the more problematic the push up excercise becomes.

Other types or kinds of push ups are the Slow Eccentric Push Ups, Wide Push Ups, Staggered Push Ups, T push ups, Fingertip Push Ups and many more.

Typically in hot weather or when a person’s muscles heat up, a person can produce more________ than normal. IT’S P.E WORK!

**Answer:**

Sweat. Hope this helps!!

**Explanation:**

what is the speed of a cheetah that travels 112.0 m in 4.0 s?

28 meters per speed.

**Answer:**

I don't understand

1. A piece of iron has a volume of 11.6 cm and a mass of 63.5 9. What is its density?

75.1

51.9

5.74

0.18

it’s 5.74 if i’m not mistaken

How does changing the number of neutrons affect an atom?

**Answer:**

If you change the number of neutrons in an atom, you get an isotope of the same element. The addition of a neutron can make an atom radioactive. When you change the number of protons in an atom, you will change the atom from one element to a different element.

**Explanation:**

The characteristics of the **atomic nucleus** allow to find the answer for the effect of the **change** of **neutrons** in an atoms is

The change in neutrons changes the

A **chemical element** is made up of **protons**, **neutrons** and **electrons**; the first two are in the **atomic nucleus** and the **electrons** are in **orbits** around them.

The number of **protons** corresponds to the **atomic number **and its change changes the type of element.

The **neutrons** that are **neutral charge **together with** protons** form the **mass **of the atom, as neutrons are neutral if the number does not affect the type of atom, but if its** atomic mass** changes.

Elements with the** same atomic number**, but **different atomic mass**, different number of neutrons are called **isotopes**; in general **all elements** **have isotopes**, for example hydrogen has an isotope called deuterium that has a neutral and another radioactive isotope called tritium that has two neutrons.

In conclusion using the** characteristics **of the **atomic nucleus** we find the answer for the effect of the **change** of **neutrons** in an atoms is

The change in neutrons

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If a train goes at constant speed of 40 miles per hour for one hour, then at constant

speed of 55 miles per hour for two hours, what is its average speed at the train?

**Answer: because the train goes 72 mph for 2 hours**

**Explanation:**

does the train go 72mph for 2 hours as well? if so the answer would be 324 because you have to add 90 twice scene it goes at that speed for 2 hours thats 180. assuming the train goes 72 mph for 2 hours it would be 144. then add 180 and 144 and you get 324 merry christmas and a happy newyear to you and your family

What is the depth of the crater if the time is 6.3 s? An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2. To determine the depth of the crater, she drops a rock and measures the time it takes for it to HIT the bottom

Complete Question

An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2. To determine the depth of the crater, she drops a rock and measures the time it takes for it

to hit the bottom. If the time is 6.3 s, what is the depth of the crater?

Answer:

The depth is 32 m

Explanation:

From the question we are told that

The time is t = 6.3 s

The acceleration due to gravity is [tex]g = 1.62 \ m/s^2[/tex]

Generally from kinematic equation

[tex]s = ut + \frac{1}{2} - at^2[/tex]

Here the u is the initial velocity and the value is 0 m/s

[tex]s = 0 + \frac{1}{2} - (1.62) * (6.3)^2[/tex]

[tex]s = 32 \ m [/tex]

Moral Dilemma A man is sitting at home worrying about the fact that his daughter needs a major surgery in order to continue living, but he does not have the money to pay for it. He has asked family and friends to help with the cost of the surgery, but he was only able to raise about a quarter of what the surgery costs. He then remembers that he has power of attorney (i.E., control over someone else's finances/legal issues) for his out-of-touch-with-reality, but healthy, 85-year-old father. The man could, without anyone knowing, use his father's money to pay for the surgery. However, this would leave his father with only one year of living expenses. The man decides to take his father's money for his daughter's surgery. Should the man have done that? Why?

**Answer:**

Mostly with aid of Kohlberg 's moral growth theory, I clarify this answer, which would also be separated into three stages under which this particular problem is illustrated below.

**Explanation:**

The daughter's father would think about either the penalty during that point if he commits any wrongdoing or breaches laws to save her daughter. But another way to make that happen for surgery is that a person cares about either the legislation and rules as well as the significance of respecting them throughout the pre-conventional process. He will also attempt to establish its insight into solving these problems.

As per the traditional process of the spiritual psychosocial development of Kohlberg, her father would think of civilization because there are conventions that unless he borrows money of his dad again for the procedure of their daughter, culture would label him greedy or prejudice against him to pay the profits of his father despite his consideration.

As per this argument, he might determine for her child as well as father in his philosophy including perspectives, which means that his father is not in the situation of requesting credit, but because he's in a position to give a recommendation, therefore he certainly gives authorization rescue her grandchildren even though she is small and has several activities to do in hers life. And subsequently, with emerging profits, he will take care of his father as well as daughter, and nowadays focus says their daughter wants treatment to recover.

HURRY! Please!

How do the lights in a series circuit behave when one bulb burns out?

O The rest of the bulbs continue to shine at maximum brightness.

OThe rest of the bulbs continue to shine at a lower brightness.

OThe rest of the bulbs continue to shine at a higher brightness

OThe rest of the bulbs stop shining and shut off.

**Answer:**

D. The rest of the bulbs stop shining and shut off.

**Explanation:**

When one **bulb **in a **series circuit** burns, out, the **rest **of the **bulbs **stop **shining **and shut off.** **Option **D** is correct.

**What is an electric bulb?**

An **electric bulb** is a **gadget **that uses **electricity** to create **visible light. **It is the most popular type of **artificial lighting** and is necessary for modern society.

The **light bulb** is connected to a **switch **in a **parallel **configuration. The **switch **is **open**, which means there will be a lot of **resistance **and no **current **will flow via this **route**.

Across the **parallel **connection, the **battery **would create the same **potential difference**. Because the **current **would not go via the **open switch**, it would instead flow through the** light bulb**, causing it to **illuminate**.

When one **bulb **in a **series circuit** burns, out, the rest of the **bulbs **stop **shining **and shut off.

Hence, option **D **is correct.

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.

Answer in units of N.

There is nothing to answer because there is no question

Which sentence describes Newton's first law?

A. Forces always come in pairs that have the same magnitude.

B. The action force applied by one object to another is opposite in

direction to the reaction force.

C. It takes a larger net force to accelerate an object at a greater rate.

D. Unbalanced forces cause an object to move.

SM

[tex]\Large{\red{\bf{\blue{\dag} Answer:-}}}[/tex]

**Newton's First Law of Motion **:

An object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

Here this statement is best represented by the statement : *Unbalanced forces cause an object to move.** ***[**** ****option**** ****c**** ****]**

**More**** to**** know**** ****:****-**

Newton's 3 laws of motion :-

**Newton's**** ****First**** Law**** of**** Motion**** ****:****-**

It states that an object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

**Ex**** ****-**** ** (i) We tend to fall backwards while standing in the bus , when it starts suddenly.

(ii) We tend to fall forward while standing in the bus , when it stops suddenly.

**Newton's ****Seco****nd**** Law of Motion :-**

It states that the rate of change of momentum is directly proportional to the applied force in the direction of the force . That is ∆p [tex]\propto[/tex] Force .

**Ex**** ****-**** **(i) When we push car & a truck with same force the car will have Greater acceleration due to less mass . (Imaginary case ).

(ii) We feel easy to push a empty cart than a full cart .

**Newton's ****Third**** Law of Motion :-**

It states that every action has equal and opposite reaction .

**Ex**** ****-**** **(i) We are able to walk on ground due to Newton's third law of motion .

(ii) When we push wall it also applies equal and opposite force .

"**Unbalanced **forces cause an **object **to move " is the sentence that describes **Newton's first law.**

A **body **remains in the state of **rest **or uniform **motion **in a **straight **line unless and until an **external **force acts on it.

The **object **is to be rest if the **velocity **and **acceleration **are zero. When an object is in **motion**, **velocity **is **not **equal to **zero **(v ≠ 0) but **acceleration **(a = 0) is equal to **zero**. Therefore, the **object **will continue in motion with **constant **velocity in the **same **direction.

Example:

If we **jump **from a bus while **moving**, our body will be like still moving in the same **direction **of the vehicle. When your feet hit the ground, the **grounds **act on your feet and stop moving. You will fall because the upper part of your body didn't stop and you will **fall **in the **direction **you were moving.

If the **object **have the greater **mass**, then the object will have more **inertia**. Forces can change the **object's **motion.

Hence, **Option D **is the correct answer.

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List two objects here on Earth that are sources of radiant energy. How can you tell they emit radiant energy?

They glow and feel hot

Your friend tells you “I no the moon does not rotate because we always see the same side.” do you agree or disagree with your friend? Write up what you would say to your friend to show why you agree or disagree with them. (THIS IS URGENT I REALLY NEED HELP WITH THIS BECAUSE I DONT KNOW HOW TO EXPLAIN)

**Answer:**

no the moon does not rotate it only goes in circle just like the sun so I disagree with your friend

4. Hijackers are taking over a plane, They tell the pilot to get to Spain as fast as possible. The plane goes from 900

km/hr (beginning speed) to 1140 km/hr (final speed) in just 6 seconds. What is the acceleration of the plane?

The acceleration is about 1457, because of the wind turbines and the way it’s going

i really need help please just answer at least one

**Answer:**

9) a = 25 [m/s^2], t = 4 [s]

10) a = 0.0875 [m/s^2], t = 34.3 [s]

11) t = 32 [s]

**Explanation:**

To solve this problem we must use kinematics equations. In this way we have:

9)

a)

[tex]v_{f}^{2} = v_{i}^{2}-(2*a*x)\\[/tex]

where:

Vf = final velocity = 0

Vi = initial velocity = 100 [m/s]

a = acceleration [m/s^2]

x = distance = 200 [m]

**Note: the final speed is zero, as the car stops completely when it stops. The negative sign of the equation means that the car loses speed or slows down as it stops.**

0 = (100)^2 - (2*a*200)

a = 25 [m/s^2]

b)

Now using the following equation:

[tex]v_{f} =v_{i} - (a*t)[/tex]

0 = 100 - (25*t)

t = 4 [s]

10)

a)

To solve this problem we must use kinematics equations. In this way we have:

[tex]v_{f} ^{2} = v_{i} ^{2} + 2*a*(x-x_{o})[/tex]

**Note: The positive sign of the equation means that the car increases his speed.**

5^2 = 2^2 + 2*a*(125 - 5)

25 - 4 = 2*a* (120)

a = 0.0875 [m/s^2]

b)

Now using the following equation:

[tex]v_{f}= v_{i}+a*t\\[/tex]

5 = 2 + 0.0875*t

3 = 0.0875*t

t = 34.3 [s]

11)

To solve this problem we must use kinematics equations. In this way we have:

[tex]v_{f} ^{2} = v_{i} ^{2} + 2*a*(x-x_{o})[/tex]

10^2 = 2^2 + 2*a*(200 - 10)

100 - 4 = 2*a* (190)

a = 0.25 [m/s^2]

Now using the following equation:

[tex]v_{f}= v_{i}+a*t\\[/tex]

10 = 2 + 0.25*t

8 = 0.25*t

t = 32 [s]

if two objects are repelled from each other which force most likely caused this?

A. gravitational

B. weak nuclear

C. electromagnetic

D. strong nuclear

C. electromagnetic

**Answer:**

it's C! electromagnetic

**Explanation:**

Which is the best estimate for the width of a typical adult hand?

**Answer:**

About 4-5in

**Explanation:**

An object with a charge of 1.2 C is located 4.5 m away from a second object that has a charge of 0.36 C. Find the electrical force that the objects exert on each other. Use 8.988×10 N⋅m2/C2 for the value of Coulomb's constant. Give your answer to two decimal places.

**Answer:**

[tex]1.917*10^8\ N[/tex]

**Explanation:**

Coulomb's law states that the electric force between two charges is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them. It is given by the formula:

[tex]F=k\frac{q_1q_2}{r^2}\\ \\q_1=first\ charge = 1.2C,q_2=second\ charge=0.36C,k=coulomb\ constant=8.988*10^9 N.m^2/C^2, r=distance=4.5m,F=force\\\\F=8.988*10^9*\frac{1.2*0.36}{4.5^2} =1.917*10^8\ N[/tex]

why is a 5 rupees coin attracted by a magnet? name the metal present in the coin

Hey Mate

See a coin is attracted bcoz he it has a metal names iron Which is easily attracted by the magnets

Hope, you fell my answer Helpful ( ◜‿◝ )♡

The new metal in the coin is Ferritic Stainless Steel

The (old) metal in the coin is Cupro-Nickel

The (old) metal in the coin is Cupro-Nickel

how is kinetic energy is stored

Answer:

Explanation:

Kinetic energy can be stored. For example, it takes work to lift a weight and place it on a shelf or to compress a spring. ... Kinetic energy can also be transferred from one body to another in a collision, which can be elastic or inelastic. One example of an elastic collision would be one billiard ball striking another.

**Explanation:**

Kinetic energy can be stored. For example, it takes work to lift a weight and place it on a shelf or to compress a spring. ... Kinetic energy can also be transferred from one body to another in a collision, which can be elastic or inelastic. One example of an elastic collision would be one billiard ball striking another.

Two fish swimming in a river have the following equations of motion:

X 1 = - 6.4 m + (- 1.2 m/s) t

X 2 = 1.3 m + (- 2.7 m/s) t

Which fish is moving faster?

**Answer:**

The second fish, X2, is moving faster than the first fish, X1

**Explanation:**

The given parameters for the equation of motion of the fishes are;

X1 = -6.4 m + (-1.2 m/s)×t

X2 = 1.3 m + (-2.7 m/s)×t

The given equation are straight line equations in the slope and intercept form, where the slope is the speed and in m/s and the intercept is the starting point of swimming of the fishes

For the first fish, the intercept = -6.4 m, the slope = the speed = -1.2 m/s

For the second fish, the intercept = 1.3 m, the slope = the speed = -2.7 m/s

Whereby the fishes are swimming in the opposite direction of the measurement of length, we have;

The magnitude of the speed of the second fish [tex]\left | -2.7 \ m/s \right | = 2.7 \ m/s[/tex], is larger than the magnitude of the speed of the first fish [tex]\left | -1.2 \ m/s \right | = 1.2 \ m/s[/tex]

Therefore, the second fish, X2, is moving faster than the first fish, X1.

Your brother has cooked the books and skimmed money because he has six kids, one ex-wife, and may lose his home. The corporation's ISP sues the corporation for defaulting on the Web design and hosting contract, which you signed, claiming that the corporation is a sham corporation. You and your mom are personally liable. False True
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Luzadis Company makes furniture using the latest automated technology. The company uses a job-order costing system and applies manufacturing overhead cost to products on the basis of machine-hours. The predetermined overhead rate was based on a cost formula that estimates $900,000 of total manufacturing overhead for an estimated activity level of 75,000 machine-hours. During the year, a large quantity of furniture on the market resulted in cutting back production and a buildup of furniture in the companys warehouse. The companys cost records revealed the following actual cost and operating data for the year:Machine-hours 76,000Manufacturing overhead cost $637,000Inventories at year-end: Raw materials $20,000Work in process (includes overhead applied of $36,480) $115,800Finished goods (includes overhead applied of $91,200) $289,500Cost of goods sold (includes overhead applied of $480,320) $1,524,700Required:a. Compute the underapplied or overapplied overhead.b. Assume that the company closes any underapplied or overapplied overhead to Cost of Goods Sold. Prepare the appropriate journal entry. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)c. Assume that the company allocates any underapplied or over appliedoverhead proportionally to Work in Process, Finished Goods, and Cost of Goods Sold. Prepare the appropriate journal entry. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)d. How much higher or lower will net operating income be if the underapplied or overapplied overhead is allocated to Work in Process, Finished Goods, and Cost of Goods Sold rather than being closed to Cost of Goods Sold?
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