The periodic table is often referred to as the chemists'
______.

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Mass of the roller coaster = 1000 kg

Velocity of the roller coaster = 20.0 m/s

We know the formula for finding the kinetic energy is

Kinetic energy = 0.5 * mass * (velocity) ^2

                      = 0.5 * 1000 * (20)^2

                      = 0.5 * 1000 * 400

                      = 200000 Joules

So the Kinetic energy of the roller coaster is 200000 joules.

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Answer: Explanation:

Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.

Answer:

39,200J

Explanation:

just took the test

The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J

Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.

mass(m)  = 10kg

g (acceleration due to gravity) = 9.8m/s^2

altitude(height (h)) = 400m

Meteor's Potential energy = m * g * h

                                           = 10 * 9.8 * 400 = 39200 J

correct option will be a) 39200 J

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Answer: I don’t think you would be able to see any planets.

Explanation:

Answer: It's kind of a subjective question by saying Which of the following pictures should be placed on the side of heat being removed from the material?

Explanation: I'm not entirely sure about this but I would think that it would be baked cupcakes because they had to undergo heat to become "baked", so they are the result of heat.

Answer:

i think a species of bird will die or move to a new forest

Answer:

Hope it helps!!!

Explanation:

one nut represents an atom and a single bolt represents an atom you put atoms together to create compounds a molecule is created when two or more atoms join together chemically a compound is a molecule that contains at least two different elements. a drawback could be that u can see both individual pieces wherein certain mixture and compounds u can’t see both components.

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Answer:

A semi-truck travelling down the road has more kinetic energy than a car travelling at the same speed because the truck's mass is much more than the car's. A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass.

Explanation:

Answer:

An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity.

Explanation:

Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.

Explanation:

Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping

Answer:

Air 1.00 300

Water 1.33 226

Glass 1.5 200

Diamond

Explanation:

1a. The theoretical yield of Fe₂O₃ obtained is 17.14 g

1b. The percentage yield of Fe₂O₃ obtained is 82.9%

2. The molarity of the KCl solution is 0.04 M

Balanced equation

4Fe + 3O₂ —> 2Fe₂O₃

Molar mass of Fe = 56 g/mol

Mass of Fe from the balanced equation = 4 × 56 = 224 g

Molar mass of Fe₂O₃ = (56×2) + (16×3) = 160 g/mol

Mass of Fe₂O₃ from the balanced equation = 2 × 160 = 320 g

SUMMARY

From the balanced equation above,

224 g of Fe reacted to produce 320 g of Fe₂O₃

Therefore,

12 g of Fe will react to produce = (12 × 320) / 224 = 17.14 g of Fe₂O₃

Thus, the theoretical yield of Fe₂O₃ is 17.14 g

Percentage yield = (Actual / Theoretical) × 100

Percentage yield of Fe₂O₃ = (14.21 / 17.14) ×100

Percentage yield of Fe₂O₃ = 82.9%

Molarity = mole / volume

Molarity of KCl = 5.1 / 126.81

Molarity of KCl = 0.04 M

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Parallel circuits because, electrons continue to flow in a parallel circuit even if part of the circuit is broken

Answer:

The net force is zero Newtons (0 N).

Explanation:

If the forces on one side is 4N and the forces on another side are 4N, the forces cancel out and you have a net force of zero. This means the object is at rest or is moving at a constant rate based on the question.

Hope this helps!

The magnitude of  net force is 8 N.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

A spring balance can be used to calculate the Force. Newton is the SI unit of force .

Given that:  the two forces are parallel and magnitude of them is 4N and 4N respectively.

Hence, magnitude of the resultant force is = 4 Newton + 4 Newton = 8 Newton.

The net force is 8 N.

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Your question is incomplete, but most probably your full question was:

Calculate the magnitude of net force if the forces are parallel and magnitude of them is 4N and 4N respectively.

Answer:

heat

Explanation:

Answer:

motion heat

Explanation:

Answer:

I think its red

Explanation:

divide the distance 8000 by the hours 10 to get 800

Answer:

Red.

Explanation:

If you divide the distance by the time, you will discover that the airplane traveled 800 miles per hour.

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Answer: Find the attached file for the answer.

Explanation:

When an element decays with alpha particles, the alpha particles involved is helium 4 elements.

When a Gold-185 decays by alpha decay, it will decay to form iridium 181

The Atomic number of gold is 79 and the atomic number of helium is 2

To balance the nuclear reaction,

The Atomic number of iridium will be:

79 = x + 2

X = 79 - 2 = 77

The mass number of gold is 185 and the helium mass number is 4

The mass number of iridium is:

185 = M + 4

M = 185 - 4 = 181

Find the attached file for the remaining solution.

Answer:

Pretty sure it is air mass C

Explanation:

It looks like yhe air has warm air where as the other 2 options have cold air.

A box camera is a simple type of camera, the most common form being a cardboard or plastic box with a lens in one end and film at the other. They were sold in large numbers during the late 19th and early 20th centuries. The lenses are often single element designs meniscus fixed focus lens, or in better quality box cameras a doublet lens with minimal (if any) possible adjustments to the aperture or shutter speeds. Because of the inability to adjust focus, the small lens aperture and the low sensitivity of the sensitive materials available, these cameras work best in brightly lit day-lit scenes when the subject is within the hyperfocal distance for the lens and of subjects that move little during the exposure. Eventually, box cameras with photographic flash, shutter and aperture adjustment were introduced, allowing indoor photos.

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2) Is working of camera is similar to that of pin hole camera?brainly.in/question/14388967?referrer=searchResults

3) Uses of pin hole camera?                                
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Answer:

a simple box-shaped hand camera, typically lacking an adjustment for shutter speed.

Answer:

Increase the mass or velocity.

Explanation:

The formula of Kinetic Energy is Ek=1/2*m*v^2. So both increase the mass or velocity can increase the Ek.

Kinetic energy of an object depends on its  mass and velocity. Therefore, the roller caster can gain more kinetic energy by increasing its velocity. Increase in mass by loading the cart can also helps to increase its kinetic energy.

Kinetic energy of an object is generated by virtue of its motion. Whereas, the when the object is at rest, the energy is stored in the form of potential energy.

The kinetic energy of a body is depends on its mass and velocity as per the relation written below:

KE = 1/2 Mv²

Hence, an increase in velocity increases  the kinetic energy by 4 times. Similarly an increase in mass also increases the kinetic energy.

Therefore, by increasing its speed and loading more mass, the roller coaster can gain more kinetic energy. Moreover, the way can be more smoothened to avoid the chance of friction.

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Answer:

The work used to lift an item equals the force needed times the distance moved. You can estimate work by multiplying the number of ants times the stick length.

Answer:

I believe that it's similarly

Answer:

Explanation: COMPOST BIN

WHAT IS A COMPOST BIN?

A compost bin is a container into which you place organic waste to turn into compost (organic material) over time.

Most compost bins are designed to hasten the decomposition of organic matter through proper aeration and moisture retention. With the proper combination of air and moisture, ideal conditions are produced for the activity of aerobic organisms responsible for the high temperatures that transform the organic materials into compost

Read on to find out how to start a compost bin, DIY compost bin ideas, and more tips for beginners.

The decomposition process will eventually take place over time in a compost "pile" or "heap," even without any housing to contain the matter. However, a compost bin is worth it because it helps speed up decomposition and keeps the area neat. Some bins are continuous, meaning you can keep adding waste to them, while others create batches of compost with a set mix of ingredients you add all at once. Depending on the style of compost bin you choose, bins can also have the advantage of making it harder for rats to get at your compost. This is true of the tumbler type, for example.

CHOOSING THE RIGHT BIN

Select the right bin for your composting needs. You can make an inexpensive compost container out of almost any container or material. Some ideas include:

Plastic storage container

Plastic bucket

Trash cans

Straw bales

Lumber

Branches harvested from the woods

Stone

Cinder blocks

Wire fencing

Ceramic (also popular for a kitchen countertop compost bin)

The best bin, however, is one you can easily turn or rotate consistently to control odors and make sure all the materials decompose. This is especially important for aerobic composting (more information below). A tumbler composting bin is pricey, but you can DIY one from barrels and sawhorses. You can turn compost with a rake or shovel in a non-rotating bin, it just takes more labor to do so.

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Answer: try invasive species can change the natural habitat of the lake

Explanation: