What is the difference between a mixture and a pure substance? Give an example of each.

Answer:

c.triangle

Explanation:

this is because I played football in be and the teacher told up it should be a triangle

Answer:

→ Friction resists motion

→ Friction is a contact force.

→ Friction is caused by microscopic bumps and ridges on surfaces.

Explanation:

As the normal force, the friction is a contact force because it result when two objects interact by a direct contact, that is, touching to each other. Friction is important in everyday life and resists motion. For example, the oil in a car engine minimizes friction between moving parts, but a car can move because the friction between the tires and the road, but what about the microscopic level? well, as the normal forces friction forces result from the intermolecular forces between two rough surfaces at points where they come into contact and they are electrical in nature.

Answer: I think there are four stages

Explanation:

There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection. ... Condensation: This is when water vapour in the air cools down and turns back into liquid water. Precipitation: This is when water (in the form of rain, snow, hail or sleet) falls from clouds in the sky.

Answer: There are four main parts to the water cycle: Evaporation, Convection, Precipitation and Collection. Evaporation is when the sun heats up water in rivers or lakes or the ocean and turns it into vapour or steam.

Explanation: ok

Answer:2 possible ways for question 16 and for question 17 they could be two posible causes

Explanation for 16:

1)you can use velocity like a rocket fast enough to reach the meteor and crush it mid way to earth 2)you can use mass like a big rock but if the meteor is to big then use velocity too for it can help the mass have a big colisio whit the asteroid whit a catapult or a big launcher and the moon gravity can help to because of the force

Explanation for 17:the two were in a different road and the one that is sideways was at a bigger speed then the car left in the middle and because of the mass the collision was worse For the one in the middle

Answer: (B) 4 Seconds

Explanation: The Balance of weight and air resistance equals out after 4 seconds giving you your terminal velocity. (the fastest speed you can travel at your given weight and air resistance)

Answer : B. The sjydriver has the fastest speed at 4second.

What is air resistances ?

--Air resistance is a type of friction force.

-- Air resistance, there are not two solid surfaces in contact.

-- Air resistance is the frictional force acting on an object and the air around them.

--This means that friction always pushes in the opposite direction than the skydiver is travelling, therefore slowing the skydiver down.

Concept Used

-- When the skydiver jumps off the plane, their speed would accelerate because the pull of gravity on the person, or their weight force, is greater than the air resistance slowing them down.

-- A person’s weight force will always stay the same.

-- The weight force of the person will equal their air resistance.

-- This would make the skydiver travel at constant speed.

--To travel at constant speed forces have to be equal to zero.

--This constant speed is called terminal velocity

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Answer:

large force is equal to velocity and acceleration

but ididn't get small force

Explanation

Answer: Because they all share the same square root

Explanation:

h = 6.63 × 10−34 J.s = 4.136 × 10-15 eV.s

Answer:

A=12      B=36      C=1       D=36

Explanation:

Answer:

the answer is A

Explanation:

The cart is moving because of the force from the toys hitting it

Answer:

Draw an underwater maps of the things

Explanation:

Just follow the instructions and draw  a picture that doesn't include water, life ect.

the key result indicate that how you will achieve the your goal

Answer:

The key results explains how you achieve a certain goal. They have to be quantitative, but always measurable in terms of their progress.

1/v + 1/u = 1/f

1/12 - 1/20 = 1/f

5-3/60 =1/f

2/60 = 1/f

 1/30 = 1/f

 f= 30

This was done by mirror formula 

Hope you understood

Yes, I noticed that a magnet could be used to move the paper clip without touching it.

It is  similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.

The force acting on the paper clip is described as the magnetic force,

The claim can be made that magnets could  move an object  without physical contact by using the magnetic force to exert a force on the object.

A magnetic field is described as a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

In this case , the magnetic force arose due to the interaction between the magnetic fields of the magnet and the paper clip.

The magnet has a magnetic field around it, which exerts a force on any nearby magnetic material, such as the paper clip.

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Answer:

Yes, I noticed that a magnet could be used to move the paper clip without touching it.

It is  similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.

The force acting on the paper clip is described as the magnetic force,

The claim can be made that magnets could  move an object  without physical contact by using the magnetic force to exert a force on the object

Explanation:

The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.

I hope this helps!

Answer:

D

Explanation:

Answer: you did not ask a question baka

Explanation:

the question what is it

Answer:

10. dependent as a change has occurred which has affected something else which is measurable.

11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.

12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.

13. Dependent as the animal's and plants' survival is reliant on the environment.

14. Dependant as the plants require sunlight for photosynthies

Answer:

All are dependent

Explanation:

i think the answer is C because tube worms live in the ocean.

Explanation:

tube worms live in the ocean

Seagrasses are a vital part of the marine ecosystem..

Seagrasses are submerged flowering plants found in shallow marine waters, such as bays and lagoons and along the continental shelf in the Gulf of Mexico. A vital part of the marine ecosystem due to their productivity level, seagrasses provide food, habitat, and nursery areas for numerous vertebrate and invertebrate species. The vast biodiversity and sensitivity to changes in water quality inherent in seagrass communities makes seagrasses an important species to help determine the overall health of coastal ecosystems. Seagrasses perform numerous functions:

Stabilizing the sea bottom

Providing food and habitat for other marine organisms

Maintaining water quality

Supporting local economies

Answer:

C. Beats

Explanation:

When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.

Answer:

beats

Explanation:

got it right

Answer/Explanation:

1. Force / a. 6 Newtons

2.  Mass / c. 125 kilograms

3. Acceleration / d. 3 m/s^2

4. Speed / b. 29 m/s

5. Velocity / e. 29 m/s East

6. Distance / f. 228 meters

Hope this helps!

Answer:

1.  A)  6 Newtons

2. C)  125 kilograms

3. D)  3 m/s^2

4. B)  29 m/s

5. E)  29 m/s East

6. F)  228 meters

Answer: If you were too push a heavy item down a ramp, it would go faster than a lighter object because the heavier the object, the stronger the gravitational force.

Explanation:

a.  P.E(Y)<  P.E(W)<  P.E(Z)<  P.E(X)

mass m(Y)< m(W)<m(Z)<m(X)

b. The books arranged with book X in the bottom, book Z in 2nd position, book W in 3rd and book Y on the top.

If an object is lifted, work is done against gravitational force. The object gains energy.

The equation for calculating gravitational potential energy is

GPE =mgh

where, GPE is the gravitational potential energy, m is the mass, h is the change in height and g is the acceleration due to gravity.

a) According to the heights of books, P.E(Y)<  P.E(W)<  P.E(Z)<  P.E(X)

when arranged for lowest potential energy, book with the lowest mass will be placed in the lower position. Thus, relationship among masses, m(Y)< m(W)<m(Z)<m(X)

b)  The arrangement of the books can be changed for the greatest overall potential energy when only one book is on each shelf. The books arranged with book X in the bottom, book Z in 2nd position, book W in 3rd and book Y on the top.

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Answer: The human circulatory system can be arranged from the highest to the lowest degree of internal organization as follows: Heart, Blood Vessels, Arteries, Veins, and Capillaries.

Explanation: The human circulatory system can be arranged from the highest to the lowest degree of internal organization as follows:

Heart: The heart is a vital organ responsible for pumping oxygenated blood to the body and deoxygenated blood to the lungs. It consists of chambers (atria and ventricles) and valves that regulate blood flow.

Blood Vessels: Blood vessels form a network of tubes that transport blood throughout the body. They can be classified into three types: arteries, veins, and capillaries.

Arteries: Arteries are thick-walled blood vessels that carry oxygenated blood away from the heart to various parts of the body.

Veins: Veins are blood vessels that transport deoxygenated blood from the body back to the heart. They have thinner walls compared to arteries and contain valves to prevent backflow.

Capillaries: Capillaries are tiny, thin-walled blood vessels that connect arteries and veins. They facilitate the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues.

Please note that this arrangement is based on the internal organization of the circulatory system, with consideration given to the hierarchical structure and function of each component.

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Answer:

Cell, tissue, organ and organ system

Explanation:

The correct order from the lowest to the highest degree of internal organization is the following Cell, tissue, organ, and organ system then at last whole body. It is because the cells are produced in order to form the tissues in the body and in order for an organ to be produced tissues are essential and are formed and in order for a system.