Match the object to the type of motion it's displaying. which letter goes with which number?

A. linear motion
1. the propeller of an aircraft in midair
2.a car driving up a winding mountain road
B. rotational motion
C. curvilinear motion
3. music being played on a stringed instrument, such as a guitar
4.runners sprinting across a straight track
D. vibrational motion.​

Answer:

Explanation:

Given data

the radius of curve= 90m

speed v= 90 km/h to m/s = (90*100)/60*60=  25 m/s

we know that the expression for the centripetal force acting on the car

[tex]Fc= \frac{mv^2}{r}[/tex]-------1

we also know that the expression for the frictional force between road and tire.

Ff= μmg--------2

Equating equation 1 and 2 we have

μmg= mv^2/r

μ= v^2/gr

substituting the values of speed and radius we have (assuming g= 9.81m/s^2)

μ= 25^2/9.81*90

μ= 625/882.9

μ= 0.7

Answer:

Decreases

Explanation More mass=More gravitational pull

Less mass=Less gravitational pull

Hope this helps

Answer:

decreses

Explanation:

In space we feel weightlessness because the earth's gravity has less effect on us. The Earth's gravitational attraction at those altitudes is only about 11% less than it is at the Earth's surface. If you had a ladder that could reach as high as the shuttle's orbit, your weight would be 11% less at the top.

Answer:

60 - 45 = A. 15

Explanation:

Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.

A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.

The image that follows illustrates how an object appears when viewed via a plane mirror.

Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

To learn more about Plane mirror, refer to the link:

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Answer:

Kinetic Energy=1/2×m×v^2,Where m=mass,v=velocity. So, kinetic energy of the object=1/2×150×15^2 = 16875 kg m^2 s^-2 .

Explanation:

math lol

The Direction of the Velocity Vector

Objects moving in uniform circular motion will have a constant speed. Velocity, being a vector, has both a magnitude and a direction. The magnitude of the velocity vector is the instantaneous speed of the object.

Answer:

I would say    B. It rids the body of something harmful.

Explanation:

Vomiting usually tries to get rid of something bad in your stomach. If you vomit when your sick its because its trying to get rid of that sickness.

Hope this helps >:3

Answer:

B. It rids the body of something harmful.

Explanation:

Answer:The awnser would be C!

Explanation:

Hope this helped!

Answer:

C. I will make it a priority.

Explanation:

Answer

Common issues that affect societies across places and times include healthcare, disease, natural disasters, drought, unemployment, racism, war, pollution, over-use of resources, selecting leaders, high taxes, education, and relationships with other countries.

Answer:

A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. A liquid is made up of tiny vibrating particles of matter, such as atoms, held together by intermolecular bonds.

Answer:

Initial velocity U = 0

Final velocity V = 32.23 m/s

Explanation:

Given that a coin is dropped from the top of the Tower of Pisa, 53m above the ground.

What is the coin's initial velocity ?

Since the coin is dropped from the tower, the initial velocity U will be equal to zero.

Therefore, U = 0

But the final velocity V will be calculated by using the formula

V^2 = U^2 + 2gH

V^2 = 0 + 2 × 9.8 × 53

V^2 = 1038.8

V = sqrt ( 1038.8)

V = 32.23 m/s

Answer:

[tex] \fbox{ \sf { \: Solid \: , \: Liquid \: and \:Gas}}[/tex]

Explanation:

[tex] \star[/tex] Let's learn about matter.

We see different kinds of things around us. Some of these are wood , book , salt , beaker , sugar , water , milk , oil, rubber and water vapour. All these things occupy space and have mass as they are matter. Anything that occupies space and has weight is called matter.

[tex] \star[/tex] States of Matter

Solid , liquid and gas are the three states of matter.

[tex] \hookrightarrow{ \text{ \underline{ Solid}}}[/tex]

Different things have different sizes and shapes but a particular thing has a fixed shape and size. The things which have definite size and definite shape are solids. Stone , word , ice , glass etc are some examples of solid.

[tex] \hookrightarrow{ \text{ \underline{ Liquid}}}[/tex]

The things having a definite volume but no definite shape of their own are called liquids. Water ,milk , petroleum , oil etc are as common examples of liquid.

[tex] \hookrightarrow{ \underline{ \text{Gas}}}[/tex]

The things which have neither a definite volume not a definite shape of their own are called gases. The bases take the shape and the size of the vessels in which they are enclosed. Air , smoke , water vapours , hydrogen gas are some examples of gases.

[tex] \sf{Hope \: I \: helped !}[/tex]

[tex] \sf{Best \: regards !!}[/tex]

~[tex] \text{TheAnimeGirl}[/tex]

Answer:

you need to include the units for both axis to be able to answer this

Explanation:

average speed in uniform motion is the slope anywhere on the line but you could always pick 2 points and do it that way and speed is just rise over run

or y2-y1/x2-x1

Pick two points on the line and determine their coordinates.

Determine the difference in y-coordinates of these two points (rise).

Determine the difference in x-coordinates for these two points (run).

Divide the difference in y-coordinates by the difference in x-coordinates (rise/run or slope).

the second bit i think they are looking for this calculation y = mx + b, where m is the slope and b is the y-intercept (where the line crosses the y axis (the vertical one that has no units

Then use that formula for the last question and put in the x value of 10 and complete the formula to find out what y is

The  positive feedback influence the stability of a system is:  It can cause the system to remain stable as long as inputs are constant. Hence, option (A) is correct.

A body's capacity to return to its initial static equilibrium after being slightly shifted is referred to as stability.

A body in equilibrium doesn't suffer linear acceleration or a turning effect, and unless a force from the outside disturbs it, it will stay in that state forever. (The First Law of Newton)

Learn more about stability here:

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Answer:c

Explanation:got it wrong bc the other person didn’t know bc their small minded

The water. Take the specific heat of steel, estimate the volume of the nail, you know the volume of the water, which has a specific heat of one. Or be obvious. If you dropped a red hot nail into a liter of cold water, what would happen?

Answer:

Water

☆One litre boiling water has more amount of heat because it has much more greater mass than iron nail

I am not sure if its wrong,sorry

but here is the iron nail explanation also

☆A red hot nail has more amount of heat because the density of iron is more than that of water

By Bernoulli's Principle :

[tex]P_x+\dfrac{\rho v_x^2}{2}+\rho gz_x=P_y+\dfrac{\rho v_y^2}{2}+\rho gz_y[/tex]

Since , pipe is horizontal so every point is at same height .

So , [tex]z_x=z_y[/tex] .

The equation will reduced to :

[tex]P_x+\dfrac{\rho v_x^2}{2}=P_y+\dfrac{\rho v_y^2}{2}[/tex]    ..... 1 )

Also flow rate will be constant :

[tex]Q=A_xv_x=A_yv_y[/tex]

[tex]v_x=\dfrac{Q}{A_x}\\\\v_x=\dfrac{2.4\times 10^{-4}}{3\times 10^{-4}}\ m/s\\\\v_x=0.8\ m/s[/tex]

[tex]v_y=\dfrac{Q}{A_y}\\\\v_y=\dfrac{2.4\times 10^{-4}}{0.6\times 10^{-4}}\ m/s\\\\v_x=4\ m/s[/tex]

Now ,

[tex]P_x-P_y=\dfrac{\rho v_y^2}{2}-\dfrac{\rho v_x^2}{2}\\\\P_x-P_y=\rho[\dfrac{ v_y^2}{2}-\dfrac{v_x^2}{2}]\\\\P_x-P_y=1000\times [\dfrac{ 4^2}{2}-\dfrac{0.8^2}{2}]\\\\P_x-P_y=7680\ Pa[/tex]

Difference in pressure between X and Y is most near to 7700 Pa.

Hence, this is the required solution.

D.

They don't have directions.

The quantities with only magnitude and no direction are called scalar quantities. Therefore, option D is the correct answer.  

Scalar quantities have only magnitude but vector quantities have both magnitude and direction. Some examples of scalar quantities are,

• Mass

• Temperature  

• Speed

• Density

Thus, we conclude that the quantities with only magnitude and no direction are scalar quantities. Hence option D is the correct pair.

Learn more about scalar quantities here:

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Answer:

1.#potential energy = PE, m = mass in kg, g = force of gravity, h= vertical height above the ground.  ** means to the power of ie exponent. * means multiply.

PE = mgh

300 = m(10)(15)

m = 300/(10)(15)

m= 2kg

2. KE = 1/2 mv**2

     = 1/2(50)(50)**2

     = 2500 joules

Explanation

Is as in solution

Answer:Since most of the data scientist collect is quantitative, data tables and charts are usually used to organize the information • Graphs are created from data tables • They allow the investigator to get a visual image of the observations, which simplifies interpretation and drawing

Have a nice day (^-^) ;)

Answer:

2 m/s

Explanation: Given that a flatbed car of a train moves 8 m/s to the east. A jogger runs along to top the flatbed car (which is not very safe) with a velocity of 6 m/s to the west.

Since the jogger is moving in an opposite direction to the direction of the train, and velocity is the distance covered in a specific direction, the jogger will be moving at a velocity relative to the velocity of the train.

Velocity = (8 - 6) m/s

Velocity = 2 m/s

Therefore, the jogger will be moving at the speed of 2 m/s

All of the above.

For example:

A glass plate is a solid. Particles vibrate in a solid and are closely packed. together.

It doesn’t change shape if you touch it.

It doesn’t change volume like it’s water.

Answer:

D: all of the above

Explanation:

particles in a solid do vibrate but they're tightly packed and move around fixed location

Answer:

Yes because the hotter the water the less time it takes to dissolve.

Explanation:

Answer:

Magnetic energy and electromagnetic energy form of potential energy followed by a form of kinetic energy.

(B) is correct option.

Explanation:

Given that,

Lists a form of potential energy followed by a form of kinetic energy

We know that,

Sound energy :

The movement of energy through object it is called sound energy. When a object produced vibration by force then it moves in wave.

Sound wave is example of kinetic energy.

Nuclear energy :

The store energy in the nucleus of the atom it is called nuclear energy. This energy released when occurs fusion and fission.

Nuclear energy is the example of potential energy

Magnetic energy :

Magnetic energy is a type of potential energy which is depend on distance and position in the magnetic field.

Electromagnetic energy :

Electromagnetic energy is light energy. it is type of kinetic energy.

Gravitational energy :

Gravitational energy is a type of potential energy. It is an energy related with gravity or gravitational force.

Elastic energy :

The store energy in elastic object it is called elastic energy. This energy is a type of potential energy.

Electrical energy :

The movement of electrons is called electrical energy. When electrons move through a wire then it is are called electricity. Electrical energy is type of kinetic energy.

Hence, Magnetic energy and electromagnetic energy form of potential energy followed by a form of kinetic energy.

(B) is correct option.

Answer:

its B

Explanation:

Answer:

Structures that are tall or skinny are generally less stable, making them more likely to fall when exposed to lateral forces, whereas ones that are shorter or wider (at the base) are generally more steadfast.

Explanation:

Answer:

D). A sudden change in temperature increased the density of the atmosphere.

Explanation:

The claim that can be made and supported with evidence regarding the temporary decrease in light would be 'a sudden change in temperature will increase the density of the atmosphere.' As the temperature increases, the molecules in the atmosphere begin to move fastly which causes a decrease in atmosphere density while it increases with the fall in temperature. As a result, the intensity of sunlight gets affected due to molecules being heavier and floating in the atmosphere. Thus, option D is the correct answer.

Answer:  Its the atmosphere

Explanation:

I have had this Question before. hope this helps:)

Answer:

b) G.P.E = Mgh

300j = M x 10 m/s² x 15 m

300 j/ 10 m/s² x 15 m = M

300j/ 150 s² = M

2kg = M

c) K.E = 1/2 m v²

K.E = 1/2 (50) (50)²

K.E = 1/2 (50) (2500)

K.E= 125000/2

K.E = 625 000 J

Answer:

Symbol N

Explanation:

The SI unit of force is the newton, symbol N

The units of mass, length, and time are.

The combination is the unit of force, called the "Newton".

1 Newton is the force that accelerates 1 kilogram of mass at the rate of 1 meter per second every second.