This is chemistry help

Answer:

The faster an object is moving, the more energy it can transfer. The amount of energy transferred between moving objects depends on the object's speed. Objects that are moving faster have a bigger impact because they transfer more energy.

Answer:

If two cars, one with a mass of 990 kilograms and traveling at 30 mph, and the other with a mass of 2,000 kilograms and also traveling at 30 mph, were to collide with each other, what would be the outcome of the collision in terms of the force of impact and the damage caused to the vehicles?

Answer:

A wedge is basically a simple machine that consists of two inclined planes, back-to-back. For a wedge, the effort (force) is applied to the vertical (height) of the wedge.

Some examples are knives, axes, chisels, wedges etc.

Their usage is simply for splitting wood, lifting something, cutting etc.

Hope this helps!

Answer:

convection current waves

Explanation:

The study of chemicals is called chemistry.

The correct answer is D.

The heat convention is stated as the transfer of heat from one place to another due to the movement of fluid. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of conduction and advection.

According to the question, the warm air rises up and travels along with the air.

The hot air also has a high temperature due to which the radiation of the heat transfer from one place to another.

Hence, the correct answer is D that is Warm air rises and takes heat with it; eventually, it cools and sinks.

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all but energy i think but if not its a and d

Explanation:

Answer:

carbon dioxide, water, and sunlight

Explanation:

These things .is needed for photosynthesis to take place. By the way, sunlight is Energy.

Answer:

b

Explanation:

i hope this helps, wish u luck

Answer: D or only 2 correctly describe the importance of soil

Explanation: Don't know what to put here.

The area where the land meets the sea is called the coastline. This area can have different physical features depending on its location. Some common features of coastlines are beaches, cliffs, bays, harbors, estuaries, and dunes. Beaches are made up of loose particles like sand and gravel that are deposited by the sea.

Answer:

claim:

The outcome of the tug of war game results in the dogs getting stronger and more motivated.

evidence:

Tug-of-war is a fun game for the dogs. Playing it strengthens the connection

between the dogs . Tug of war helps the dogs exercise.

reasoning:

Since it is a fun game, dogs will be motivated to go out and play it. Then the two dogs will become friends and get even more motivated to go out because their new friend is outside. This will result in them playing tug of war often and they will get stronger when they play longer.

Answer:

Mimetic, rhetorical, expressive, and formal

Explanation:

Hope it helped

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Answer:

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.

Explanation:

In Maglev trains, magnetic force exist between objects that are not in contact but can interact at a distance.Hence, the statement is true.

Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.

It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.

The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

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Answer:

Newton's Laws of Motion

Explanation:

1st- Inertia- every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

2nd- The second law states that the greater the mass of an object, the more force it will take to accelerate the object

3rd- action reaction- If the forces are equal in opposite directions, the object will not move. The forces cancel each other out so that the acceleration is zero. If one force acting in one direction is greater than the force acting in the opposite direction, the object will move.

Answer:

May be thay can be tropical in south east and wet in middle, hot in west and cold in north.

Explanation:

(Sunny, windy, cloudy, cold, foggy, rainy, snowy, clear, warm(peace), hot(uncomfortable))

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Answer:

He provided a number of scientific insights that laid the foundation for future scientists. He also improved telescope that helped further the understanding of the world and universe.

Explanation:

Answer:it’s because Galileo Galilei is pretty much the father of today’s modern science

Explanation:

I hope this helps :)

Answer:

The cycle of seasons is caused by Earth's tilt toward the Sun. Earth makes a complete orbit around the Sun every 365.25 days. It spins on an invisible axis that is tilted at an angle of 23.5°. The angle does not change; only the direction of the axis in relation to the Sun changes.

The north end of the axis points away from the Sun for half of year and toward the Sun for the other half. Depending on the time of year, some parts of Earth are tilted more toward the direct rays of the Sun than other parts. Parts of Earth that get more direct rays get warmer, and parts that get fewer direct rays are cooler. The difference in the amount of heat and light available at Earth’s surface determines the seasons.

Seasons vary from one part of the world to another. At different times during the year, the Northern or Southern Hemisphere is closer to the Sun. When it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere. When it is winter in the Northern Hemisphere, it is summer in the Southern Hemisphere. Both hemispheres get similar amounts of energy from the Sun during fall and spring.

Rotation is the movement of the earth on its axis that causes day and night. The tilt of the planet is responsible for the season and the climatic changes.

Rotation is the movement of the planet on the axis in twenty-four hours that results in the day and night of the planet. The spinning of the planet in a counterclockwise direction results as if the sun rising and falling.

The tilt of the planet is due to revolution and the results in different seasons around the earth in one year or 365 days. The angle of the earth facing the sun plays a role in determining the season of the region.

Therefore, rotation determines day and night, while revolution determines the seasons.

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Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Answer:no

Explanation:

because there are different bone structures to different animals

ex.mammals aren't invertabres

Answer:

A. no

Explanation:

The other person is right.

Answer:

Answer: Chemical change; Chemical property of heat of combustion

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

Explanation:

Answer:

: Chemical change; Chemical property of heat of combustion

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

Example: Melting of ice

Physical property is defined as the property of a substance which becomes evident during physical changes. Example: Melting point

A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.

Example: combustion

Chemical property is defined as the property of a substance which becomes evident during chemical changes. Example: Reactivity with other substances

Thus when a piece of coal and a piece of wood is burnt , there is formation of new substances and thus is a chemical change. Combustion is a chemical property as it is reactivity of a substance with oxygen.

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Answer:h

Explanation:

Answer:

The answer to this question is ( a )

Explanation:

Answer:

When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.

Explanation:

The heat in particles travels through convection at a certain speed depending on what density a mass has.

Answer: It is the third one.

Explanation:

An index fossil is something that a human can estimate the age of the fossil by looking at it.