If the radius of the CD below is 6.0 cm and the angular velocity is 5.0 rad/s, what is its angular displacement in 2.0 s? What is it's Linear displacement on the edge in 2.0 s? Please show work :(

**Answer:**

theta = ω t = 5.0 / sec * 2 s = 10 rad

S = R theta = 6 cm * 10 rad = 60 cm

The **angular **displacement of CD if the **radius **of the CD below is 6.0 cm and the angular **velocity **is 5.0 rad/s, is 10 rad, and the linear **displacement **is 60 cm.

When **anything **is moving, its velocity tells us how **quickly **that something's location is **changing **from a certain vantage point and as measured by a particular unit of **time**.

If a **point **moves along a path and covers a certain distance in a predetermined amount of time, its average **speed **over that period of time is equal to the **distance **covered divided by the travel time. A train traveling 100 kilometers in two hours, for instance, is doing it at an average **speed **of 50 km/h.

**Given**:

The radius of the CD, r = 6 cm,

The angular velocity, v = 5 rad / sec

The time, t = 2 sec,

Calculate the angular displacement by the formula given below,

[tex]v = s / t[/tex]

5 = s / 2

s = 10 rad,

Calculate the linear displacement by the formula given below,

Linear displacement = [tex]r\ s[/tex]

Linear displacement = 6 × 10

Linear displacement = 60 cm

Therefore, the angular displacement of CD if the radius of the CD below is 6.0 cm and the angular velocity is 5.0 rad/s, is 10 rad, and the linear displacement is 60 cm.

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A digital stopwatch reading 0:13 37. Read the elapsed time on the stopwatch and answer the questions. In which digit is there the least amount of confidence? How many significant figures does this measurement have?.

The **digit **with the **least amount **of **confidence **can be seen in the **second part **which is **7. **

The number of **significant figures** in the **measurement **of the **stopwatch **is **4. **

An **elapsed time** is the **difference **between the **time **prior to the **commencement **of an **event **and the **time **at which the **event **has **ended**.

From the **stopwatch**, the **elapsed time** is given as:

0hour : 13 minutes : 37 seconds

The **digit **with the **least amount **of **confidence **can be seen in the **seconds part i**s 7.

A **significant figure **is a **real figure **that is **dependable **and **absolutely **essential to **convey **the **quantity **of something.

The number of **significant figures** in the **measurement **of the **stopwatch **is **4. **

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Answer: 7 and 4

Explanation: A digital stopwatch reading 0:13 37.

Read the elapsed time on the stopwatch and answer the questions.

In which digit is there the least amount of confidence?

7

How many significant figures does this measurement have?

4

The power ratings of several motors are listed in the table. A 2 column table with 3 rows. The first column is labeled motor with entries, brand X, brand Y, brand Z. The second column is labeled Power in watts with entries 7460, 7650, 7580. An advertising agency writes marketing material for a new motor (Brand W) that has a power rating of 7,640 W. Which statement comparing the motors can they truthfully use? Brand W motor can finish any job faster than Brand Y motor can. Thereâ€™s not a more powerful motor available. Brand W motor does more work each second than Brand X or Brand Z. Every second, Brand W motor does 7,640 N of your toughest work.

The statement " **Brand**-**W **motor does **7,640 N** of your **toughest work**." can be **truthfully **use.

**Advertisement Rules:**

Here, the **brand**-**W **has the **power **rating of **7,640 W** that is less than brand-Y. **Advertiser **cannot compare his **brand **using the name of Brand X, Y, or Z.

Therefore, the statement " **Brand**-**W **motor does **7,640 N** of your **toughest work**." can be **truthfully **use.

To know more about **Advertisement Rules:**

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**Answer:**

The correct answer is **C**, Brand W motor does more work each second than Brand X or Brand Z.

The force involved in falling of an apple from a tree is known as? (a) Magnetic force (b) electrostatic force (c) Contact force (d) gravitational force

**Answer:**

it is known as gravitational force

**Answer:**

Gravitational force.

**Explanation:**

Gravitational force is the force that allows objects to drop which is how the apple dropped.

Find the distance traveled in one back-and-forth swing by the weight of a 12 in. Pendulum that swings through a 75 degree angle.

The **distance **traveled by **pendulum**, in one **back**-and-**forth swing **is **75.75 inches.**

The **period **of **pendulum **can be calculated by

[tex]T = 2\pi \sqrt {\dfrac Lg}[/tex]

Where,

[tex]T[/tex] - period

[tex]L[/tex] - length =** 12 inches**

[tex]g[/tex]- gravitational acceleration = [tex]\bold {9.8\rm \ m/s^2}[/tex]

Put the **values**,

[tex]T = 2\pi \sqrt {\dfrac {12}{9.8}}\\\\T = 2 \times 3.14 \times \sqrt {0.122}\\\\T = 2.191[/tex]

Now, the **angular displacement **of the **pendulum **can be calculated by,

[tex]\theta = A\times\rm \ cos(\omega T)[/tex]

Where,

[tex]A[/tex]- amplitude

[tex]\theta[/tex] - angle = [tex]75^o[/tex]

[tex]\omega[/tex] - **angular displacement = **[tex]2\pi/T[/tex] = **2.866 m**

Put the **values **and calculate for [tex]\omega[/tex],

[tex]75 = A\times{\rm \ cos}(2.866\times 2.191)\\\\75 =A \times cos\ 6.26\\\\A =\dfrac {75}{0.99}\\\\A = 75.75 \rm \ inches[/tex]

Therefore, the **distance **traveled by **pendulum**, in one **back**-and-**forth swing **is **75.75 inches.**

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What is electromagnetic wave ?

its an electric magnetic cell this uses electricity

To overcome an object's inertia, it must be acted upon by __________. A. Gravity B. Energy C. Force D. Acceleration Please select the best answer from the choices provided. A B C D.

Taking into account the Newton's first Law, the **correct answer** is **option C**. To overcome an object's inertia, it must be acted upon by **a force**.

**Newton's First Law**, also called the Law of inertia, indicates that "**Every body perseveres in its state of rest or of uniform rectilinear motion **unless it is **forced to change its state** by forces impressed on it." This means that for a body to come out of its state of rest or of uniform rectilinear motion, it is necessary for a force to act on it.

**In other words**, it is not possible for a body to change its initial state (be it rest or motion) unless one or more forces intervene.

Finally, the **correct answer** is **option C**. To overcome an object's inertia, it must be acted upon by **a force**.

**Learn more**:

Answer:

C) Force

Explanation:

1 If you measured the distance travelled by a snail in

inches and the time it took in minutes, what would

be the units of its speed?

The answer is m/s hope it helps

How can you decrease the amount of input force of a wheel and axle?

**Explanation:**

hmm by the increasing the size of wheel and decreasing axle

If the 0.10 kg baseball on the right has a

kinetic energy of 5 J, what is its velocity?

**Answer:**

**Explanation:**

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass

v is the velocity

Since we're finding the velocity we make v the subject

That's

[tex]v = \sqrt{ \frac{2k}{m} } \\ [/tex]

From the question

k = 5 J

m = 0.1 kg

We have

[tex]v = \sqrt{ \frac{2 \times 5}{0.1} } = \sqrt{ \frac{10}{0.1} } = \sqrt{100} \\ = 10[/tex]

We have the final answer as

10 m/sHope this helps you

Now you need to put handles on your cookware! You have five different options, including metals and nonmetals such as wood. Based on specific heat, which material would be the best choice? the material with the smallest specific heat the material with the greatest specific heat the material whose specific heat is farthest from the specific heat of the metal pan the material whose specific heat is closest to the specific heat of the metal pan.

Answer: B the material with the greatest specific heat

Explanation:

Just did the assignment

Answer:

B. The material with the greatest specific heat

Explanation:

Describe when the chemical

reaction occurs in a dry-cell

battery

**Answer:**

**For a dry-cell battery to operate, oxidation will occur from the zinc anode and reduction will take place in the cathode. The most common type of cathode is a carbon graphite. Once reactants have been turned into products, the dry-cell battery will work to produce electricity.**

**Explanation:**

**The battery operates through electrochemical reactions called oxidation and reduction. These reactions involve the exchange of electrons between chemical species. If a chemical species loses one or more electrons, this is called oxidation. The opposite process, the gain of electrons, is called reduction.**

yvonne van gennip of the netherlands ice skated 10.0 km with an average speed of 10.8 m/s. suppose vang ennip crosses the finish line at her average speed and takes a huge boquet of flowers handed to her by a fan. as a result her speed drops t o10.01 m/s. if van gennip’s mass is 63.0 kg what is the mass of the boquet?

By **conservation of momentum**, we will find that the mass is **4.97 kg.**

So in the original **system**, we have two objects, the bouquet of flowers of mass M that is not moving and Yvonne, which has a mass of 63 kg and a speed of 10.8 m/s.

Then the total** momentum **of this** system **is:

P = (63kg)*(10.8m/s) + M*(0 m/s) = 680.4 kg*m/s.

Remember the** conservation of momentum**, thus, the **final momentum **must be equal to the above one.

In the final situation, Yvonne and the bouquet move together with a speed of 10.01 m/s,

Then the **final momentum** is:

P' = (63kg + M)*(10.01 m/s)

And that must be equal to the **initial momentum**, then we have the equation:

(63kg + M)*(10.01 m/s) = 680.4 kg*m/s.

630.63kg*m/s + M*10.01 m/s = 680.4 kg*m/s.

M*10.01 m/s = 680.4 kg*m/s - 630.63kg*m/s = 49.77 kg*m/s

M = (49.77 kg*m/s)/(10.01 m/s) =** 4.97 kg**

So the** mass** of the bouquet is** 4.97 kg**

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How long did it take Sally riding her bike to slow down from 18 km/h to 6 km/h if the deceleration was at a rate of 4 km/h/s?

4.5 seconds

3 seconds

3 hours

6 seconds

Answer:

I’m pretty positive that it’s 3 seconds

Hope this helps!

I’m pretty positive that it’s 3 seconds

Hope this helps!

What is the final velocity of an object that starts from rest and travels for 5 seconds at an acceleration of 4.3 m/s2?

**Answer:**

This is the answer that I got.

**Explanation:**

Hope it is right.

Above sea level, water boils at a __ temperature due to the __ atmospheric pressure.

**Answer:**

lower, lower

**Explanation:**

When atmospheric pressure is lower, such as at a higher altitude, it takes less energy to bring water to the boiling point. Less energy means less heat, which means water will boil at a lower temperature at a higher altitude.

Can we get less ads please i don’t like this

I hope we can! I dont like the ads either! they are horrible on these appsn

3. Suppose Earth orbited a star whose mass was double the mass of the sun. If the radius of Earth's orbit remained

the same as it is now, then compared with gravitational force between Earth and the sun, the gravitational force

between Earth and the star would be -

A. half as much

B. the same

C. two times as much

D. four times as much

**Answer:**

F1 = G M m / R^2 current force on earth

F2 = G M * 2 m / R^2 force if mass were doubled

F2 / F1 = 2 the force would be twice as large

The **gravitational force** between two objects not only depends on the mass but also the distance between them. If the distance to the star is same as to sun, then by doubling mass** force** also doubles. Thus option** C **is correct.

**Gravitational force** is the attractive force by which an object attracts other objects into its centre of mass. We are all standing in the ground because of the gravitational pull by **earth**.

The gravitational force between two objects of mass M1 and M2 at a distance r is written as follows:

g = G M1 M2/ r ² . where, G is **gravitational constant**.

As per this relation, gravitational force is directly proportional to the mass and inversely proportional to the square of the distance.

If the star has a distance from earth equal to the distance between sun and earth, but its **mass** is double the mass of sun, then the gravitational force will be two times compared with the sun.

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Is science based off observations? Explain how observations are important to your experiment.

**Answer:**

Observation is essential in science. Scientists use observation to collect and record data, which enables them to construct and then test hypotheses and theories. Scientists observe in many ways – with their own senses or with tools such as microscopes, scanners or transmitters to extend their vision or hearing. These tools allow for more precise and accurate observations. Scientists also use equipment to measure things like radiation or pH – phenomena not directly observable.

**Explanation:**

In a car engine, fuel is ignited within a cylinder to cause an explosion that moves a piston. If the explosion exerts 300 Pa of pressure on a piston with a surface area of 80 cm^2?

The **force **exerted by the **explosion **on the** piston **is **2.4 N.**

The given parameters:

The **force **exerted on the **piston **by the **explosion **is calculated as follows;

F = PA

where;

A is the area of the piston in m²

The **surface area** of the **piston **in square meter is calculated as follows;

[tex]A = 80 \ cm^2 \times \frac{(1m)^2}{(100 \ cm)^2} \\\\A = 0.008 \ m^2[/tex]

The **force **exerted by the **explosion **on the** piston **is calculated as follows;

[tex]F = 300 \ (N/m^2)\ \times \ 0.008 \ (m^2)\\\\F = 2.4 \ N[/tex]

The **complete question** is here:

In a car engine, fuel is ignited within a cylinder to cause an explosion that moves a piston. If the explosion exerts 300 Pa of pressure on a piston with a surface area of 80 cm^2, what is the force exerted on the piston?

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Find the area of the given figure

**Answer:**

77 sq.cm

**Explanation:**

*Solution**,*

*Trapezium*

*P**erpendicular** **(**P**1**)**=**8**cm*

*P**erpendicular**(**P**2**)**=**1**4**cm*

*height**(**h**)**=**7**cm*

*Now**,*

*We** **know** **that**,*

* ** ** ** **Area**(**A**)**=** **1**/**2** **×**h** **(**P**1**+**P**2**)*

* ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **=** **1**/**2** **×** **7**cm** **(**8**cm**+**1**4**cm**)*

* ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **=** **1**/**2** **×** **7**cm**(**2**2**cm**)*

* ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **=** **1**/**2** **×** **1**5**4** **squarecm*

* ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **=**7**7** **sq**.**cm** *

Is mechanical energy the result of both kinetic and potential energy?

**Answer:**

Yes

**Explanation:**

Because putting them together would make a type of energy making the answer yes

The answer is: Yes, mechanical energy can be both kinetic and potential energy.

Explanation:

The mechanical energy of an object can be the result of its motion (i.e., kinetic energy) and/or the result of its stored energy of position (i.e., potential energy).

The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy. This sum is simply referred to as the total mechanical energy.

Explanation:

The mechanical energy of an object can be the result of its motion (i.e., kinetic energy) and/or the result of its stored energy of position (i.e., potential energy).

The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy. This sum is simply referred to as the total mechanical energy.

Galois drove 60.0 kilometers due west in 5.00 hours and then drove 43.0 kilometers due north in 3.00 hours.

(a) How far did he travel?

(b) What was his average speed?

(c) What was his displacement?

(d) What was his average velocity?

**Answer:**

**Explanation:**

See the attachment for the details. A right triangle is formed to find the hypotenuse of the two legs consisting of the actual driving distances and times. The hypotenuse gives the vector information for the displacement at the end of 8 hours of driving.

The individual driving times and distances are summed to provide:

(**a) How far did he travel?**

** 103 km**

**(b) What was his average speed?**

**12.88 km/h**

**(c) What was his displacement?**

**73.82 km**

**(d) What was his average velocity?**

**9.228 km/h**

A young diver is practicing his skills before an important team competition. Use the diagram below in order to analyze the energies of the diver and complete the statements below.

Where m = mass (kg), g = 9.8 m/s2, v = velocity (m/s), h = height (m), KE = kinetic energy (J), and GPE = gravitational potential energy (J).

Use the equations above to answer the following questions.

A diver with a mass of 90 kg is at a height of 10 m, and he has not jumped off of the board yet (v = 0 m/s). When the diver reaches a height of 5 m (Point C), his gravitational potential energy is

A. 1350 J

B. 8820 J

C. 4410 J

D. 0 J

and his velocity is

E. 4.5 m/s

F. 0 m/s

G. 3.2 m/s

H. 9.9 m/s

Please help will mark brainliest

Mass of the diver (m) = 90 Kg.Height of the board from the ground (h) = 10 m.Acceleration due to gravity (g) = 9.8 m/s^2.Height of the diver from the ground when he reaches point C (x) = 5mInitial velocity (u) = 0 m/sWe know, gravitational potential energy of a body = mass × acceleration due to gravity × height.Therefore, the gravitational potential energy of the diver when he reaches point C (GPE) = mg(h - x)or, GPE = [90 × 9.8 × (10-5)] Jor, GPE = [90 × 9.8 × 5] Jor, GPE = 4410 JFor a freely falling body,v^2 - u^2 = 2ghor, v^2 = 2ghWe know, kinetic energy of a body = 1/2 mv^2Therefore, kinetic energy of the diver when he reaches point C (KE) = 1/2 m(2gx)Here, 2gx = (2 × 9.8 × 5) = 98 (m/s)^2We have already seen v^2 = 2gh or, v = √2ghSo, the velocity of the diver = √2gx = √98 m/s = 9.9 m/s

Answers:

*The **gravitational** potential** energy** of** the** **diver **when **he** reaches** point** C** **is **4**4**1**0** **J.*

*The **velocity** **of **the **diver **is **9**.**9** **m/**s.*

Hope you could get an idea from here.

Doubt clarification - use comment section.

h=10m-5m=5mm=90Kgg=9.8m/s^2

[tex]\\ \sf\longmapsto PE=mgh[/tex]

[tex]\\ \sf\longmapsto PE=90(5)(9.8)[/tex]

[tex]\\ \sf\longmapsto PE=4410J[/tex]

Now

It's converted to kinetic energy while reaching ground.

[tex]\\ \sf\longmapsto K.E=4410[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{2}mv^2=4410[/tex]

[tex]\\ \sf\longmapsto 90v^2=8820[/tex]

[tex]\\ \sf\longmapsto v^2=98[/tex]

[tex]\\ \sf\longmapsto v=9.9m/s[/tex]

do we use more freshwater in our homes to provide us with electricity

**Answer:**

No. Water can be used in a hydroelectric dam to generate electricity, but this does not make us use more or less water in our homes.

**Explanation:**

**Answer:We use more freshwater to provide us with electricity. Water is the only compound that can be found naturally as a liquid, gas, and solid.**

**Explanation:**

Compare the amount of kinetic energy of particles in each state of matter￼- solid, liquid, gas

**Answer:**

gas moves around the most so it would have the most kinetic energy and solids would have the least as they only vibrate a tiny bit(not visible to the naked eye)

13. What are some ways that you can conserve energy?

**Answer:**

Adjust your day-to-day behaviors.

Replace your light bulbs.

Use smart power strips.

Install a programmable thermostat.

Use energy efficient appliances.

Reduce water heating expenses.

Install energy efficient windows.

Upgrade your HVAC system.

Turn Off Lights and Electronics When You Aren't Using Them. ...

Replace Traditional Light Bulbs with LEDs. ...

Get a Smart Thermostat. ...

Ensure Your Home is Properly Insulated. ...

Put Decorative Lights on a Timer. ...

Identify and Unplug Energy Vampires. ...

Reduce Appliance Use. ...

Use Less Hot Water.

A neutral object has:

a. Zero electrons.

b. Zero protons.

c. Only neutrons.

d. An attraction to negative objects.

e. An attraction to neutral objects.

**Answer:**

**c. Only neutrons.**

**hope**** ****it**** ****helps**** ****:****)**

Desperate Please Hurry

What was the evidence that Earth was round before there were photos from space?

**Answer:**

?????

**Explanation:**

????????????????????‽,??????????????????‽????????????????????????????????????

please help asap!!!!!!!!!!!

The answer would be 20000

The answer in standard form/scientific notation would be 2 x 10^4

(The exponent is 4 because that's how many digits after the 2 there is)

The answer in standard form/scientific notation would be 2 x 10^4

(The exponent is 4 because that's how many digits after the 2 there is)

???????????????????????????????????

What happened the thing is kinda glitched

Find the product mentally of(ab+3)(ab-3)
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