what makes a force a vector quantity

Answer:

Linear momentum is defined as the product of a system's mass multiplied by its velocity.

Answer:

From spectral lines astronomers can determine not only the element, but the temperature and density of that element in the star.

Answer:

The answer would be the chemicals in the atmosphere of the star.

true North is fixed point on the globe

magnetic North is the direction that a compass needle points to as it aligns with the earths magnetic field and what is interesting is that the magnetic North pole shifts and changes over time in response to change in the earth's magnetic core

4.55 seconds

Given, Speed = 330.0 m/s

To find the time, it will take for the sound of thunder to travel 1.5 km, we have to apply the formula for speed :

[tex]speed = \frac{distance}{time} [/tex]

This implies that:-

[tex]time = \frac{distance}{speed} [/tex]

So, Let's get started with the steps -

Step 1- Convert 1.5 km to metres.

[tex]1.5 \: km \: \\ = > \: 1.5 \times 1000 \\ = > 1500 \: m[/tex]

Step 2- Now, to get time, substitute the values you got now in "time=distance/speed"

[tex]t = \frac{1500}{330}[/tex]

[tex] => t = 4.55 \: seconds[/tex]

Therefore, the answer is 4.55 seconds

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Answer: The pressure of a gas is inversely proportional to its volume.

Explanation:

One way to state Boyle's law is “All other things being equal, the pressure of a gas is inversely proportional to its volume.”

Answer:

One way to state Boyle's law is “All other things being equal, the pressure of a gas is inversely proportional to its volume.”

Explanation:

Hope this helps.

Answer:

Stars create new elements in their cores by squeezing elements together in a process called nuclear fusion. First, stars fuse hydrogen atoms into helium. Helium atoms then fuse to create beryllium, and so on, until fusion in the star's core has created every element up to iron.

Explanation:

Hope this helps.

Answer:

hahahahahaha hahahahaha hahah

Answer:

I THINK it’s A

Explanation:

Because all the other answers don’t make sense.

Answer:

Below

Explanation:

To find the acceleration of the car you can use this formula :

     vf = vi + at OR a = v/t

I'm going to use the first one because it explains the steps more clearly :

vf = 24 m/s

vi = 0 m/s

t = 9.4 s

a = ?

     24m/s = 0 + (a)(9.4s)

     24m/s = a9.4

Divide both sides by 9.4

     a = 2.55319 m/s^2

Round to 3 sig figs

     a = 2.6 m/s^2

Hope this helps! Best of luck <3

When a force acts on an object, the object may change shape by bending, stretching or compressing - or a combination of all three shape changes. ... Pull an object's ends apart, eg when a rubber band is stretched. Push an object's ends together, eg when an empty drinks can is squashed.

Answer: Its like clay.

Explanation:

When you push down on clay it changes. Boom answered

Answer:

atoms

Explanation:

i dont know

im  pretty sure it atoms

Answer is 4 m/s

Let :-

Constant velocity = v

Time (t) = 2 seconds

Height (h) = 16 metres

As the raindrop has constant velocity, we can write that :

[tex] \frac{h}{2} = vt[/tex]

Substituting the values, we get,

[tex] \frac{16}{2} = v \times 2[/tex]

[tex]8 = v \times 2[/tex]

[tex] \frac{8}{2} = v[/tex]

[tex]v = 4 \: m/s[/tex]

Therefore, the velocity of the raindrop is 4 m/s.

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Answer:

you just calculate the time in the two cases then add. I decided to convert into minutes and seconds

lực ma sát khi viết phấn lên bảng

Huh??

Have a blessed day <333

Answer:

With Full Honesty I'm Not Sure Who Does, And It Also May Be Hard To Find Someone Who Does, Thanks For Reading This Is Also Have Some More Information Down Below. Thank You!

And I'm Taking It, Your A Single Male So, Lets Get Into The Point

Explanation:

Oh And BTW Brainly Isn't A Good Place To Look For People Who Are Interested In You, And That's Also A Good Explanation Because They Don't Even Know You, If Your Interested In Well Dating Someone Be Upfront And In-Person With Them, Just Look On Dating Appz And/or More Different Sites. IT'S REALLY SIMPLE!   (～￣▽￣)～

Answer:

Baking a cake requires heat to be applied to the batter in order for it to cook and chemically change into cake. The energy or heat applied is absorbed by the ingredients, so this represents an endothermic reaction.

Explanation:

that's the sample answer, hope it helps

The batter needs to be heated in order to cook and chemically transform into a cake when it is baked. An endothermic reaction is taking place because the energy or heat applied is being absorbed by the constituents.

The quantitative characteristic that is transferred to a body or a physical system in physics is referred to as energy. It manifests itself as heat and light, as well as the act of doing work. Energy is a resource that is conserved; it can only be changed from one form to another and cannot be created or destroyed, according to the law of conservation of energy. The SI unit of energy measurement is the joule (J).

According to the question, there are various types of reactions two of which are endothermic reactions and exothermic reactions.

In an endothermic lot of energy is absorbed and in opposition to the exothermic reaction lot of energy is released.

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Answer:

240÷6.0 =40

Explanation:

so that is the answer

Answer:

Liam played danganrampa

Explanation:

Answer:

from which class are you the answer of this depend on your class

The total amount of time the ball would be in the air is 2.04 secs

To determine how long the ball will be in the air,

We will the equation for calculating total time of flight, T

For a projectile motion, the total time of flight of an object is given by

[tex]T = \frac{2usin\theta}{g}[/tex]

Where T is the total time of flight

u is the velocity of projection

θ is the angle of projection

and g is the acceleration due to gravity

From the question,

u = 10.0 m/s

θ = 90° (This is because the ball is kicked straight up)

Put these values into the equation,

[tex]T = \frac{2usin\theta}{g}[/tex]

[tex]T = \frac{2\times 10.0 \ sin90}{9.8}[/tex]

(NOTE: g = 9.8 m/s²)

∴ [tex]T = \frac{2\times 10.0 \times 1}{9.8}[/tex]

[tex]T = \frac{20}{9.8}[/tex]

T = 2.04 secs

Hence, the total amount of time the ball would be in the air is 2.04 secs

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Answer:

1.Because the soil looks like rusty iron

Answer:

20m/s = 72,000m, 3m/s = 10800m

Explanation:

5 star please

Answer:

the crest of one wave to the crest of the next wave

Explanation:

In order to determine the wavelength, you must know the  crest of one wave to the crest of the next wave

Wavelength  is the distance between identical points (adjacent crust ) in the adjacent cycle of a waveform propagated in space or along wire .

wavelength can be determined by two methods

1) distance between crest and trough of that wave

2) distance between  crest of one wave to the crest of the next wave or

distance between  trough of one wave to the trough of the next wave

so , the correct answer will be d)the crest of one wave to the crest of the next wave

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Answer:

The average velocity from 5 to 6 seconds is -27 m/s

Answer:

The answer is two meter per second square

Answer:

The box gains 3200 J of kinect energy.

Explanation:

Kinect energy is the energy of an object has because of its motion. Almost anything that has mass and it's in motion has kinect energy. Examples:

Also known as the principle of work and kinect energy, it states that the work done by all forces acting upon an object equals the change of its kinect energy.

For example, if you pull a box, then you're exerting a force on it and it moves forward. Since the box has mass and it's in motion, you have changed its kinect energy.

Solution:

Write the data down:

[tex]\bullet \quad \mathsf{m=50\,kg}\\\\\bullet \quad \mathsf{F=400\,N}\\\\\bullet \quad \mathsf{d=8\,m}[/tex]

Apply work energy theorem:

[tex]\mathsf{W}= \Delta\mathsf{K}[/tex]

The amount work done equals the change of kinect energy:

[tex]\mathsf{W}=\mathsf{K-K_o}[/tex]

Since the block is at rest at the beginning, so it has zero initial kinect energy:

[tex]\mathsf{W}=\mathsf{K-0}\\\\\\\mathsf{W}=\mathsf{K}[/tex]

Now, apply the formula for work to the left hand side of the equation:

[tex]\mathsf{F\cdot d}=\mathsf{K}\\\\\\\mathsf{400\cdot 8}=\mathsf{K}\\\\\\\therefore \boxed{\mathsf{K=3200\,J}}[/tex]

Conclusion: the box has gained 3200 J of kinect energy.

Happy studying!

Brainly Team

The resultant of the four forces on the balloon is 1,212.35 N at 62⁰.

The given parameters;

The resultant vertical force is calculated as follows;

[tex]F_y = 5120 \ N - 4050 \ N\\\\F_y = 1,070 \ N[/tex]

The resultant horizontal force is calculated as follows;

[tex]F_x = 1520 \ N - \ 950 \ N\\\\F_x = 570 \ N[/tex]

The resultant of the four forces is calculated as follows;

[tex]F = \sqrt{F_y^2 + F_x^2} \\\\F = \sqrt{(1,070)^2 + (570)^2} \\\\F = 1,212.35 \ N[/tex]

The direction of the force is calculated as follows;

[tex]\theta = tan^{-1} (\frac{1070}{570} )\\\\\theta = 62^0[/tex]

Thus, the resultant of the four forces on the balloon is 1,212.35 N at 62⁰.

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Answer:

weight= density ×volume× 9.8

mass=density×volume

Explanation:

[tex]weight = 0.12 \times 0.04 \times 0.04 \times 3.14 \times 13600 \\ \times 9.8 = 80.351 \: n \\ \\ mass = 0.12 \times 0.04 \times 0.4 \times 3.14 \times 13600 = \\ = 8.199 \: kg[/tex]

Answer:

C.) Energy can be neither created nor destroyed.

Explanation:

There is no new energy on the earth. All energy is transformed into new sources but no energy has ever been destroyed or created.

Answer:

In June 1783, Lavoisier reacted oxygen with inflammable air, obtaining "water in a very pure state." He correctly concluded that water was not an element.

Explanation:

As the fire left behind ashes of a substance it indicated that it is not an element as element cannot be decomposed in to simpler substances.

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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