**Answer:**

pressure in liquids is given as:

P= hpg

where h is the depth

where p is the density

where g is 10

**Explanation:**

From the formula above

p = 10 X 1000 X 10

p = 100000N/m

the turns ratio for a transformer with 225 turns of wire in its primary winding and 675 turns in the secondary is: n

The **ratio** of the **primary turns** to the **secondary turns** is **1****/****3**

The correct answer to the question is **Option A. 1/3**

From the question given above, the following data were obtained:

Primary turn (Nₚ) = 225 turnsSecondary turn (Nᵣ) = 675 turnsRatio = Nₚ/Nᵣ

Nₚ/Nᵣ = 225 / 675

**Nₚ/Nᵣ**** ****=**** ****1****/****3**

Therefore, the **ratio** of the **primary turns **to the **secondary turns **is **1****/****3**

**Complete**** ****question****:**

See attached photo

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The security alarm on a parked car goes off and produces a frequency of 769 Hz. The speed of sound is 343 m/s. As you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 69.5 Hz. At what speed are you driving

**Answer:**

**Explanation:**

ASSUMING your speed is constant

f₀ = f(v + vo)/(v + vs)

Δf = f approach - f depart

69.5 = (769(343 + vo)/(343 + 0)) **-** (769(343 - vo)/(343 + 0))

69.5 = 769(2vo/343)

** vo = 15.5 m/s**

The **speed **of car driving is 15.5 m/s as the car is **parked **and drive away.

**Speed **is defined as a measurement of the length of time it takes for an object to travel a certain **distance**. You can determine an object's speed if you know how far it moves in a given amount of time. Time does not move, hence there is no concept of a speed of time. Time refers to how we move through the **temporal realm**. Speed is a unit of measurement for how quickly something is moving. A change in velocity results in a change in speed.

To calculate the speed we use the formula

**f₀ = f (v + vo) / (v + vs)**

Δf = f approach - f depart

69.5 = (769(343 + vo) / (343 + 0)) - (769(343 - vo)/(343 + 0))

69.5 = 769(2vo/343)

vo = 15.5 m/s

Thus, the **speed **of car driving is 15.5 m/s as the car is **parked **and drive away.

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What activity in orienteering can improve a player's math skills?

**homework**

or just play some 2012 math game

**Answer:**

I think calculating distance (if thats an option)

**Explanation:**

Really hope this helped!

how far from the lens is the image of the house if the house is 16 ft from the thin convex lens with a focal length of 8 ft

This question involves the concepts of the **thin lens formula**, **focal length**, and **image distance**.

The image of the house is **"16 ft" **away from the lens.

According to the **thin lens formula**:

[tex]\frac{1}{f}=\frac{1}{p}+\frac{1}{q}[/tex]

where,

f = **focal length **= 8 ft

p = object distance = 16 ft

q = **image distance **= ?

Therefore,

[tex]\frac{1}{8\ ft}=\frac{1}{16\ ft}+\frac{1}{q}\\\\\frac{1}{q}=\frac{1}{8\ ft}-\frac{1}{16\ ft}\\\\\frac{1}{q}=0.125\ ft^{-1}-0.0625\ ft^{-1}\\\\q=\frac{1}{0.0625\ ft^{-1}}\\\\[/tex]

**q = 16 ft**

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If the velocity and frequency of a wave are both doubled, how does the wavelength change?

The wavelength will remain unchanged.

**Explanation:**

The velocity [tex]v[/tex] of a wave in terms of its wavelength [tex]\lambda[/tex] and frequency [tex]\nu[/tex] is

[tex]v = \lambda\nu[/tex] (1)

so if we double both the velocity and the frequency, the equation above becomes

[tex]2v = \lambda(2\nu)[/tex] (2)

Solving for the wavelength from Eqn(2), we get

[tex]\lambda = \dfrac{2v}{2\nu} = \dfrac{v}{\nu}[/tex]

We would have gotten the same result had we used Eqn(1) instead.

**Answer:**

the wavelength increases

**Explanation:**

please help 9.2.1 project in science just ned an example

**Answer:**

Give me what kind of example you need please so I can help you. Put it in the comments.

**Explanation:**

22 Newton force is working on a 1,901 gram object. What is the acceleration in

meter/s^2 unit

**Answer:**

11.573

**Explanation:**

f = m*a

where f is the force in Newtons, m is the mass of the object (in kg) and a is the acceleration

so, we solve for a

a = f/m

a = 22/1.901

a = 11.573

A car move at an initial velocity of 240m and reach at the final velocity of 540m in 8hours. calculate its acceleration.

**Answer:**

a = 0.01m/s²

**Explanation:**

V_f = V_0+a*t

V_f = Velocity final

V_0 = Velocity initial

a = acceleration

t = time

a = (V_f-V_0)/t

a = (540m/s-240m/s)/((8hr)*(60min/1hr)*(60s/1min))

a = 0.01m/s²

which statement about metals is true?

All metals are solid at (our) living temperatures except for mercury which is a liquid. Metals are shiny for a while at least when properly finished. Metals are good conductors of both heat and electricity. This is due to the excess electrons in their valence clouds that facilitate energy transfer.What are 5 characteristics of metal?

Metals are lustrous, malleable, ductile, good conductors of heat and electricity

Silver conducts electricity better than any other metal.

Brass is an alloy made from zinc and copper.

Pure gold is too soft for many things so most gold is combined with other metals to make it stronger. ...

World time periods are often listed by the metal used.

This is an image of a satellite traveling around Earth. Explain what are the two forces that are keeping the satelite around Earth without flying off or hitting the ground.

**Answer:**

One force will be gravity & inertia.

**Explanation:**

Bioth are combine to keep Earth in orbit around the sun, and the moon in orbit around Earth

A pendulum with a length of 2 m has a period of 2.8 s. What is the period of a pendulum with a length of 8 m

**Answer:**

P = 2 pi (L / g)^1/2

P2 / P1 = (8 / 2)^1/2 = 2

The period would be twice as long or 5.6 sec.

I can learn new things but I cannot change how good I am at math. A strongly agree B. agree C disagree D. strongly disagree

Mathematics is a broad subject that anyone who constantly practices by learning from first **principle** and from example will grow in **perfection** of the subject as time goes by. Hence,** I strongly disagree**

During my **schools** days, I struggled learning mathematics, at the time it was difficult, I began **practising** and learning from text examples, with time I got a hang of it and my grade and **confidence** level in the **subject** **increased**.

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48.36

g.

MgSO4 to motes

**Answer:120.3676**

**Explanation: using the molecular calculator and molar mass of MgSO4. hope this helps!**

A cyclist rides in a circle with speed 8.1 m/s. What is his centripetal

acceleration if the circle has a radius of 27 m?

**Explanation:**

We know that the tangent velocity is 8.1 m/s. We also know that the tangent velocity can be written in the following way:

Vt = ωr with ω being the angular velocity.

We now calculate ω:

ω = Vt/r = 8.1 m/s / 27m = 0.3 rad/s

Now that we have ω we can calculate the centripetal aceleration:

a = ω^2 * r = ( 0.3 )^2 * 27 = 2.43 m/s^2

The qualitative equivalent of external validity is:

A- Credibility

B- Dependability

C- Transformability

D- Confirmability

c transformability i think

Which statement describes the particles in a liquid?

A. They do not move.

B. They are far apart.

C. They are close together.

D. They are locked in position.

I think it’s C- hope that helps

1. Wha' is the relationship between potential and kinetic energy?

As potential energy increases, kinetic energy increases.

b. As potential energy increases, kinetic energy decreases.

C. As potential energy decreases, kinetic energy decreases.

d. Potential and kinetic energy are two separate things and have no

relationship.

**Answer:**

B

**Explanation:**

The kinetic energy in an object is converted into potential energy. This makes the kinetic decrease, while the potential increases.

Help me outtttt jejjejejeje

**Answer:**

do it got a picture

**Explanation:**

How much power does it take to lift 30.0 N 10.0 m high in 10.00 s?

**Answer:**

60w

**Explanation:**

The **power **required is **30 Watt.**

Let us recall that **power **is defined as the **rate **of doing **work**. Hence, we can write as follows;

Power = **Work done**/ **time taken**

Now;

work done = Force × distance

Force = 30.0 N

Distance = 10.0 m

work done = 30.0 N × 10.0 m = **300 J**

The power expended = 300 J/10.00 s = **30 Watt**

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Shorter the vibrating part more will be the pitch. How?

Answer:When the length of a string is changed, it will vibrate with a different frequency.Shorter strings have higher frequency and therefore higher pitch.

For northern hemisphere observers, which celestial object would be above the horizon for the greatest

amount of time: one that is on the celestial equator, one that is 30° above the celestial equator, one that is

70° above the celestial equator, or one that is 40" below the celestial equator? Which one would be above

the horizon the greatest amount of time for southern hemisphere observers? Explain your answer.

**Answer:**

**Explanation:**

For a person at about 20° North latitude, an object 70° above the celestial equator would never set. It's arc path would touch the horizon be never sink below it. Observers north of 20° see it all night. Observers south of 20° an object 70° above the celestial equator would spend the greatest amount of time above the horizon.

For southern hemisphere observers, the object 40" below the celestial equator will spend the most time above the horizon. Nearly 12 hours per day. Did you mean 40°? 40 seconds is very close to the equator itself. However, the result is the same.

For **northern **hemisphere observers, the celestial object that is 70° above the celestial **equator **would be above the horizon for the **greatest **amount of time.

The Equator is an **imaginary **line passing through the middle of a globe. It is **equidistant **from the North Pole and the **South **Pole, Its is a horizontal line residing at 0 **degrees** latitude.

For northern **hemisphere** observers, the celestial **object **that is 70° above the celestial equator would be above the horizon for the greatest amount of **time**.

One that is 40" below the **celestial **equator would be above the **horizon** for the greatest** **amount of time for southern hemisphere **observers**.

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Why does the earth stay in orbit around the sun instead of drifting away from it into space?

A Electric force between the Sun and Earth

B Magnetic force between the Sun and Earth

Gravitational force between the Sun and Earth

**Answer:**

b it is b part answer i think so

At the local hockey rink, a puck with a mass of 0.12kg is given an initial speed of 5.3m/s. If the coefficient of friction between the puck and ice is 0.11, how much time does it take the puck to come to rest?

Here’s my work to your question. I used Newton’s Second Law and a kinematics equation to arrive at the answer.

At the local hockey rink, a puck with a mass of 0.12kg is given an initial **speed** of 5.3m/s. If the coefficient of** friction** between the puck and ice is 0.11, time it take the puck to come to** rest **is 4.51 sec.

The **speed **of an item, which is a scalar quantity in everyday usage and kinematics, is the size of the** change** in that object's** position** over time or the size of the change in that object's position** per unit of time**.

Given in the question at the local hockey rink, a puck with a mass of 0.12kg is given an initial **speed** of 5.3m/s. If the coefficient of friction between the puck and ice is 0.11,

**force** = ma = μmg, putting the value,

a = - 1.175 m/sec²

now using equation of motion

v = u + at

t = 4.51 sec

So,** time** taken by the puck to come to rest is 4.51 sec.

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Question No. 1 Marks = = 5 +5 +2 = 12

The driver of a 2.0 × 103 kg red car traveling on the highway at 45m/s slams on his brakes to avoid striking a second yellow car in front of him, which had come to rest because of blocking ahead as shown in above Fig. After the brakes are applied, a constant friction force of 7.5 × 103 N acts on the car. Ignore air resistance.

(a) Determine the least distance should the brakes be applied to avoid a collision with the other vehicle?

(b) If the distance between the vehicles is initially only 40.0 m, at what speed would the collision occur?

(c) Write your conclusive observations on the result obtained from this numerical. i.e. the importance of Physics in daily life.

Question No. 2 Marks = 8

Consider an automobile moving at v mph that skids d feet after its brakes lock. Calculate how far it would skid if it was moving at 2v and the brakes were locked.

The **kinematics** and **Newton's second law** we can find the results for the questions about the braking movement of the car are;

**Question 1.**

** a) **The **stopping distance** is: x = 270 m

** b) **The** initial velocity** is: v₀ = 17.3 m / s

** c)** Concepts of **kinematics** and **Newton's second law** show us the expressions to make **safe trips** and **avoid accidents** on the roads.

**Question 2.**

**Given parameters**

**To find**

**Question 1.**

a) Minimum braking distance.

b) If the distance is x = 40.0 m, what speed should the vehicles have?

c) Conclusive importance of physics in daily life.

**Question 2.**

**Kinematics **studies the **movement** of bodies, looking for relationships between the **position**, **speed** and** acceleration** of bodies.

v² = v₀² - a2 x

Where v and v₀ are the current and initial velocity, respectively, at acceleration and x the distance traveled.

**Newton's second law **states that the **net force** is proportional to the **mass** and the **acceleration** of the body.

F = ma

Where F is force, m is mass and acceleration.

In the **attachment** we see a diagram of the **forces** in the system. Let's look for the **acceleration** of the body

fr = m a

a =[tex]\frac{fr}{m}[/tex]

a = [tex]\frac{7.5 \ 10^3}{2.0 \ 10^3 }[/tex]

a = 3.75 m / s²

This** acceleration** is in the **opposite direction** to the **speed**.

Let's find the **distance** needed to **stop**, the **final speed** is **zero**.

0 = v₀² - 2 ax

x = [tex]\frac{v_o^2 }{ 2a}[/tex]

Let's calculate.

x = [tex]\frac{45^2 }{2 3.75}[/tex]

x = 270 m

This is the **minimum distance **that the **two vehicles** must separate to** avoid **a **collision.**

b) We look for **speed.**

v₀ = [tex]\sqrt{2ax}[/tex]

v₀ = [tex]\sqrt{2 \ 3.75 \ 40.0}[/tex]

v₀ = 17.3 m / s

c) The concepts of** kinematics** and **Newton's second law** show us the expressions to make **safe trips** and a**void accidents **on the roads.

**2) **They indicate that the **initial velocity** is v and the distance traveled to stop is d, let's find the acceleration.

0 = v₀² - 2ax

Let's substitute.

a = [tex]\frac{v^2}{2d}[/tex]

They ask the **distance traveled** if this car traveled from an **initial speed** 2v.

0 = v² - 2 a x

x = [tex]\frac{v^2}{2a}[/tex]

We substitute

x = [tex]\frac{(2v)^2 }{2} \ (\frac{2d}{v^2})[/tex]

x = 4 d

In conclusion, using the **kinematic** relations and **Newton's second law** we can find the results for the questions about the **braking movement **of the car are;

**Question 1**

a) The **stopping distance** is: x = 270 m

b) The** initial velocity** is: v₀ = 17.3 m / s

c) concepts of kinematics and Newton's second law show us the expressions to make safe trips and avoid accidents on the roads.

**Question 2.**

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What is work? A. What happens when energy is destroyed B. The number of molecules in a substance C. The total size of an object divided by its mass D. What happens when a force causes an object to move

**Answer:**

Which extended definition would be most helpful to add to this body paragraph?

Laughter Yoga, a new form of yoga, is becoming increasingly popular.

Laughter Yoga, which is becoming more and more popular, was created in the 1990s.

Laughter Yoga is modeled after traditional yoga but includes laughter exercises.

Laughter Yoga is a form of yoga that was created by Dr. Madan Kataria in the 1990s.

**Explanation:**

c

What is the approximate value of k when 30 = e^5k?

**Answer:**

**Explanation:**

30 = e^5k

ln30 = lne^5k

ln30 = 5k

k = ln30/5

**k = 0.68023947...**

round to your heart's content.

A car slams on its brakes creating an acceleration of -4.7 m/s^2. It comes to rest after traveling a distance of 235 m. What was its velocity before it began to accelerate?

**Answer:**

**Explanation:**

v² = u² + 2as

0² = u² + 2(-4.7)(235)

u² = 2209

**u = 47 m/s**

K

Mission CG9: Weightlessness

Consider the several locations along a roller coaster

track. In which location(s) would the riders feel less

than their normal weight? Select all that apply.

Location A

Location B

Location C

a

=-10 m/s/s, dn

--2 m/s/s, up

a--6 m/s/s, dn

Location D

Location E

x=-12 m/s/s, dn

---6 m/s/s, up

The **locations **where the **riders **feel less than their **normal weight** are Location **A**,** **Location **C **and Location **D**.

The given parameters;

The **normal weight **of the **riders **is calculated by applying **Newton's second law of motion** as follows;

W = mg

W = 9.8m

The **apparent weight** of the **riders **for the **upward acceleration** is calculated as follows;

[tex]R = m(g + a)[/tex]

The **apparent weight** of the **riders **for the **downward acceleration** is calculated as follows;

[tex]R = m(g - a)[/tex]

The** apparent weight** of the **riders **at **location A** is calculated as follows;

[tex]R_ A = m(9.8 - 10)\\\\R_ A = -0.2 m[/tex]

The** apparent weight** of the **riders **at **location B** is calculated as follows;

[tex]R_B = m(9.8 + 2)\\\\R_B = 11.8 m[/tex]

The** apparent weight** of the **riders **at **location C** is calculated as follows;

[tex]R_C = m(9.8 - 6)\\\\R_C = 3.8 m[/tex]

The** apparent weight** of the **riders **at **location D** is calculated as follows;

[tex]R_D = m(9.8 - 12)\\\\R_D = -2.2 m[/tex]

The** apparent weight** of the **riders **at **location E** is calculated as follows;

[tex]R_E = m(9.8 + 6)\\\\R_E = 15.8 m[/tex]

Thus, the **locations **where the **riders **feel less than their **normal weight** are;

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The more matter in an object, the _____.(1 point)

lower its weight and mass

lower its weight and mass

more likely it is to have gravity

more likely it is to have gravity

greater its gravitational attraction to Earth

greater its gravitational attraction to Earth

less likely it is to have weight on the moon

**Answer:**

more likely it is to have gravity

Identify the type of chemical reaction:

CaCO3 -->CaO + CO2

**Explanation:**

*decomposition **reaction.**.**.**.**.*

**Answer:**

caco₃--cao+co₂

calcium oxide + carbon die oxide gives us calcium carbonate

this is the reaction of Acidic oxide(cao) and Basic oxide (co₂) to form salt.

Which congruence criteria is met in the following scenario?ASASASSSSHLAAS
.17 La mujer (ensear)___________________________ su pasaporte al aduanero. *1 pointenseasteensearonenseensea
Isabelle is writing about a passage from the book Wonder by R. J. Palacio.Go inside if you want, Julian said. It was the first time he looked at me.I shrugged and walked over to the door. Julian moved out of the way quickly, like he was afraid I might accidentally touch him as I passed by him.Which best shows that Isabelle is making a personal connection to Julians character?I was very sick one winter with flu. I had to stay inside all month long, and no one could come to visit me. I was so lonely and felt so sad, because I wished my friends would come over, so I know how August might have felt when everyone stayed away from him.Once my brother fell off his bike and really scraped his leg badly. It looked so bad, I did not want to touch it at all. I stayed far away from my brother that week, so I understand why Julian might have been afraid to get too close to August.Julian was very cruel to August. Just because August looks different does not mean he does not have feelings. Julian should have ignored all the differences and tried harder to be nice to August. He could have given him a hug or high five.August must have felt very sad to always be different. It is not his fault that he looks different, and his feelings were probably hurt when Julian jumped away from touching him.PLZ HURRY IN TIMED TEST ILL GIVE BRAINLIEST TO THE !ST PERSON WITH CORRECT ANSWER AND NO LINKS!!!!!!!!!!! +30 points for answering
8.517 In word form, pleaseand expanded, please help
According to the self-determination theory, ________ is the need to be involved in close, warm relationships with others.
4. Write an equation of the vertical line that passes through the point (-2,-8)
why should the public have access to the technical records
A group of scientists is conducting an experiment on the effects of media on children. They randomly select 100 children and randomly assigneach child to one of four treatment groups. Each treatment group has a specific amount of screen time during a one-week time frame. Thefirst group has no screen time, the second group has two hours of screen time, the third group has four hours of screen time, and the fourthgroup has six hours of screen time,After the first week, the scientists conduct the same experiment, with the same subject groups, for three more weeks so that each groupexperiences each of the four treatments.Which statements about this study are true?This study uses blinding.This study uses random samplingThis study uses a control group.This study uses blocking.This study uses a repeated measures design.
YO ANYONE WHO IS REALLY GOOD AT MATH THAT COULD HELP ME ?
can someone help with this please
Taking an active stance to address the tangible aspects of a health condition is known as _________________.
A certain shampoo is available in two sizes. A 14.2 -ounce bottle costs 3.98$ . A 33.9 -ounce bottle costs 9.98$ .Find the unit price for each size. Then state which size is the better buy based on the unit price.Round your answers to the nearest cent.
How would you write the quotient as a simplified fraction?A) 85146 = 18 23/36B) 85146 = 18 1/2C) 85146 = 18.5 D) 85146 = 17 23/46
please help me :)ty ty
What does "however" tell readers about the sentence it introduces??A that it's a sentence that will show them a differenceB that they're about to be introduced to a new ideaC that they're about to hear an example of the idea in the previous sentenceD that it's a sentence that will show them similarity
Which is the percent composition of bromine in the compound nabr?.
Which phrase best completes the following sentence?A Sonia y Kenji_____los carros antiguos.Select one:1.les fascinan2.os fascina3.se fascina4.me fascinan
The TV station, in _______ to massive popular demand, decided notto discontinue the soapopera.A. reactionB. responseC. answerD. rely
After Mary finished college, began working in her chosen field, and started a family, her thinking became:
Solve for the value of R.PLEASE HELP ME SOMEONE ILL GIVE YOU POINTS AND BRAINLIST ANSWER!!!!