PLEASE HELP ME
NEED IT FAST WILL GIVE B !! If correct

Answer:

An object's speed or direction can be changed by a force. This means a greater force against a lesser force, and it results in acceleration. This means any push or pull against another equal push or pull. It results in no change of acceleration

Explanation:

Answer:

 t = 6.6 10⁻⁸ m

Explanation:

In this case we have that the reflection in the film is constructive, we take into account that

* When the light is reflected from the air (n = 1) to the film (n=2) it has a phase change of 180º

* within the film the wavelength is modulated by the index of refact

          λₙ = λ₀ / n

taking into account these two aspects the expression for constructive interference is

         2n t = (m + ½)  λ₀

let's find the minimum thickness (t) of the film

         t = (m + ½)  λ₀ / 2n

for m = 0

        t = ½   527 10⁻⁹ /(2 2.00)

        t = 6.6 10⁻⁸ m

Answer:

I don't know if these are all right but these are my best answers. good luck and I hope you do well.

1. true

2. true

3. false

4. true

5. true

6. true

7. true

8. true

9. false

10. false

13. it stimulates the heart through chest compressions

14. on bare skin upper right shoulder and lower left ribs

15. no CPR

Explanation:

Answer:

Since heat is carried by electromagnetic waves, it does not need a physical medium to transfer it. Instead it radiates through space - this is how the Earth is heated by the Sun despite space being a vacuum.

Explanation:

Answer:

The matter has mass and takes up space. The amount of space that matter takes up is called its : density

Answer:

Mass

Explanation:

Mass is the amount of matter occupied by an object.

Answer:

wave

Explanation:

A wave is defined as the disturbance that causes the movement of energy. The energy is transferred as the waves move from one place to another. A medium is required for the transfer of energy. Usually a wave travels through air or water. The process is carried on at a specific speed that is termed as the speed of propagation.

Answer:Cricket !

The origins of cricket are very vague, and many theories have been put forward suggesting its origins, but it is, without doubt, very English. The first evidence of cricket being played was recorded in the year 1550, by the pupils of Royal Grammar School, Guildford.

Answer:

e search mo sa utak mo kasi di mo alam

Answer:

206

Explanation:

The axial skeleton, comprising the spine, chest and head, contains 80 bones. The appendicular skeleton, comprising the arms and legs, including the shoulder and pelvic girdles, contains 126 bones, bringing the total for the entire skeleton to 206 bones.

A fully grown adult features 26 bones in the spine, whereas a child can have 34.

Answer:

The human body is made up of 206 bones

Answer:

Hope this helps you out if you could please leave 5 stars or brainiest thank you

Answer:

[tex]4i+59j+33k[/tex]

Explanation:

Given that,

Vector A = 7i+4j-8k

vector B = 3i-3j+5k​

We need to find B×A. It can be calculated as follows :

[tex]B\times A=(3i-3j+5k)\times (7i+4j-8k)\\\\=i (24 - 20) - j (-24 - 35) + k (12 + 21) \\\\=4i+59j+33k[/tex]

So, the value of vector product is [tex]4i+59j+33k[/tex].

Answer:

As atoms in the spoon vibrates about their equilibrium positions and transfer energy form one end to other end. This process is called conduction.

Explanation:

By using v=( f )x( lambda )

v= 45 s^-1 x 3 m

Therefore v = 135 ms^-1

Answer:

1788.402 MJ

Explanation:

Work done = Force (N) x distance (m)

First we have to convert distance into metres:

173.8 x 1000 = 173,800 m

Then plug these values into the equation above:

173,800 x 10290 = 1788402000 J

The reason it's Joules (the unit for energy) is because work done = energy transferred

Now we have to convert Joules into Mega Joules:

1 J = 1/1000000 MJ

1788402000 J = 1788402000/ 1000000 = 1788.402 MJ

Answer: A. silicon and oxygen

Explanation:

The two most abundance elements in earth's crust are silicon and oxygen.

The most abundant element in earth's crust is Oxygen (O) which has a percentage composition of 46.6%.  Oxygen is mainly present as silicates, carbonates, sulphates etc.

The second most abundant element in earth's crust is Silicon (Si) which has a percentage composition of 27.7% . Silicon is present in the form of silicates.

The third most abundant element in earth's crust is aluminium (Al) which has a percentage composition of 8.1 %.

The fourth most abundant element in earth's crust is Iron (Fe) which has a percentage composition of 5.0 %.

Answer:

A

Explanation:

Work formula:

[tex]W = Fd\cos(\theta)[/tex]

F = 50N, d = 1.0 m

When you lift something straight up, the angle of the force is 90º

cos(90º) is 0, so there's no work done when you lift the microwave off the ground

[tex]W = (50N)(1.0)(0) = 0[/tex]

F = 50N, d = 1.0 m

When you push the microwave, the angle is 0º and cos(0º) is 1. So there is work done here:

[tex]W = (50 N)(1.0m)(1)[/tex]

[tex]W = 50[/tex]

total work = 50 joules

Answer:

huh? I think it's Power.....

Answer:

           h = h₀/2,  the liquid column rises half the height

Explanation:

Pressure is defined as force per area,  

         P = F / A

in a barometer the force is the weights of the liquid column

         F = W = mg

         P = m g/A

if we use the definition of density

         ρ = [tex]\frac{m}{A h}[/tex]

         [tex]\frac{m}{A}[/tex] = ρ h

we substitute

         P = ρ g h

Let's use the index o for the mercury

         P₀ = ρ₀ g h₀

when we change the liquid for another with

          ρ = 2ρ₀

the pressure expression is

         P = 2ρ₀ g h

in the problem they indicate that the pressure is equal to the initial P = P₀

we substitute

           ρ₀ g h₀ = 2ρ₀ g h

           h₀ = 2h

           h = h₀/2

the liquid column rises half the height

Answer:

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

Explanation:

I could be wrong but I would say B :)

Have a good day!

answer:

i believe the answer is d

explanation:

here's why;

c. is incorrect because everything has a gravitational force.

a. is also incorrect because gravity is what holds the tennis ball down and keeps it on the ground.

i don't really know how to explain why b. is wrong, but d. is the correct answer because the force of friction opposes the motion of an object, causing moving objects to lose energy and slow down.

good luck :)

i hope this helps

**please let me know if this was incorrect**

have a great day !!

Answer:

Jackson 2: Smart 3: Ahmed

Explanation:

square + circle = egg

oops, wrong guy

Answer:

The box displacement after 6 seconds is 66 meters.

Explanation:

Let suppose that velocity given in statement represents the initial velocity of the box and, likewise, the box accelerates at constant rate. Then, the displacement of the object ([tex]\Delta s[/tex]), in meters, can be determined by the following expression:

[tex]\Delta s = v_{o}\cdot t+\frac{1}{2}\cdot a\cdot t^{2}[/tex] (1)

Where:

[tex]v_{o}[/tex] - Initial velocity, in meters per second.

[tex]t[/tex] - Time, in seconds.

[tex]a[/tex] - Acceleration, in meters per square second.

If we know that [tex]v_{o} = 5\,\frac{m}{s}[/tex], [tex]t = 6\,s[/tex] and [tex]a = 2\,\frac{m}{s^{2}}[/tex], then the box displacement after 6 seconds is:

[tex]\Delta s = 66\,m[/tex]

The box displacement after 6 seconds is 66 meters.

If one of the masses is tripled, then their product is tripled, and the force between them is tripled.  The new force is 750N .

Answer:

98.

Explanation:

divide

The change in the kinetic energy of the cart is equal to 34875 J.

The energy which is possessed by a moving body because of its motion is known as kinetic energy. Work should be done in order to bring the change in the kinetic energy of a moving object.

The kinetic energy of a moving object can be determined from the formula mentioned below:

K.E. = ½mv²     where ‘m’ and 'v' is the mass and velocity of the object.

Given, the mass of the carriage, m = 450 Kg

The speed of the carriage, u = 18 m/s

The initial kinetic energy of the cart = (1/2) × 450 × (18)²

(K.E.)₁ = 72900 J

The final speed of the cart, v = 13 m/s

The final kinetic energy of of the cart = (1/2) × 450 × (13)²

(K.E.)₂ = 38025 J

The change in the kinetic energy of the cart = (K.E.)₂ - (K.E.)₁

Change in the kinetic energy = 72900 - 38025 = 34875 J

Learn more about kinetic energy, here:

brainly.com/question/15764612

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Answer:

A

Explanation:

The image that shows an alignment of earth, moon and sun during spring tide is option A. All of them will be in a straight line.

A spring tide is a type of tide that occurs when the Earth, sun, and moon are aligned in a straight line. During a spring tide, the gravitational pull of the sun and the moon combine, resulting in higher-than-normal high tides and lower-than-normal low tides.

During a spring tide, the position of the sun, moon, and earth is aligned in a straight line. The gravitational force of the moon and sun both act upon the oceans of the Earth, creating a combined effect that results in unusually high tides.

During a spring tide, the moon is either new or full, which means it is in a position that aligns with the sun and Earth. The gravitational pull of the moon and sun reinforce each other, creating a stronger gravitational force on the Earth's oceans.

This causes the water level to rise higher than normal during high tide and lower than normal during low tide. Here, image A shows the correct alignment.

Find more on spring tides:

https://brainly.com/question/10703247

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Answer:

1a)Mass is the amount of matter in the body.

1b)Weight is the measure of the amount of force acting on a mass due to acceleration and gravity.

2a)Mass can never be zero

2b)Weight can be zero if no gravity acts upon an object. like in space

3a) Mass does not change according to location.

3b)Weight varies according to location.