Chemistry Middle School

Which form of energy is used as a roller coaster moves down the track?

a roller coaster moving down a track


Chemical energy
Light energy
Mechanical energy
Solar energy

Answers

Answer 1

Answer:

Mechanical energy

Explanation:

Answer 2
the answer is mechanical hope this helps

Related Questions

Two processes are described below: Process A: rapid moving water strikes a rock on the bottom of a stream and breaks it into pieces Process B: glaciers moving along a rocky surface form cracks in the rocks
which statement is true about the processes?

both represent physical weathering

both represent chemical weathering

Process a is physical weathering in process B is chemical weathering

process a is chemical weathering and process B is physical weathering

Answers

Answer:

both represent physical  weathering

Explanation:

Answer:

B. both represent physical weathering

Explanation:

I did the test

9. Mixing baking soda and vinegar leaves behind water and salt. This is an example of mixing ________ and __________. Is it a chemical or physical reaction?

Answers

Answer:

Mixing baking soda and vinegar is a chemical reaction. I’m not so sure about the fill in the blanks.

Explanation:

It is a chemical change due to the formation of gas and the change in temp.

It is a chemical reaction

Please help I need an answer like RIGHT NOW!

Answers

Answer:

for what nothing is heree??????????? <3

Explanation:

There isn’t anything here luv!?

Choose the abiotic factors that characterize the tundra biome.

Warm, wet forests
Very little rainfall, extreme temperatures
Arctic foxes, snowy owls, wolves
Very low temperatures, very little precipitation

Answers

Tundra biomes have very low temperatures and little precipitation. :)

⚠️An irregular piece of iron has a mass of 78.7 grams. When placed in a graduated cylinder with 30 mL of water, the water rises to the 35 mL ​⚠️

Answers

Answer:

The density of the iron is: 15.74g/cm3

Explanation:

-To determine the density of something, you have to divide the mass and the vol.

-mass/volume = density or, m/v = d

-The mass of the iron is: 78.7 grams

-The volume of the iron is 5mL

In order to find the density, you have to divide:

m/v = d

78.7g ÷ 5mL = 15.74

Hope This Helps (:

The density of the iron is 15.74 g/cm3

TIMED TEST!!

The product side of a chemical reaction is shown.

→ 7Ti2(SO4)3 What number is the coefficient

Answers

The number 7 is the coefficient
7 is the coefficient because it’s the number before the variable

PLEEAASSEE HEELLPP MEE I NEED THIS ANSWER TO FINISH THE LAST QUESTION!!!!

Answers

The product label should be at the bottom hopes this helped

Answer: Elements or compounds that enter are Reactants.

The substances that are formed are the Products

Reactants in C6H12O6 + 602 ---> 6CO2 + 6H2O are  C₆H₁₂O₆ + 6 O₂

Reactants in 6 CO2 + 6H2O --->C6H12O6 + 602 are    6 CO₂ + 6 H₂O

Reactants in 2 H2 +O2 ---> 2 H2O  are  2 H₂ +O₂

Reactants in 2 H2O ---> 2 H2 + O2  are  2 H₂O

Explanation:

The number of atoms in the reactants have to balance with the number of atoms in the products.

The first two examples given are for metabolism of carbohydrates (similar to combustion of hydrocarbons) and photosynthesis.

Describe the composition of each layer: Crust, mantle, outer core, and inner core all separate please it is worth 5pts x (this means 10 pts)

Subject: Earth Science

Answers

Answer:

crust-Silicate rocks

mantle- Silicate rocks rich in iron and magnesium

Ultramafic rocks

outer core- A layer of molten iron and nickel

inner core- solid iron and nickel

Explanation:

The answer: Crust silicate rocks

Which phrase gives two processes scientists think move the Earth's lithospheric plates?

pls answer correctly to earn Brainliest

science class btw

Answers


gravity acting on the edges of plates and convection in the mantle
Gravity acting on the edges of plates and convection in the middle

What do cuticles do for land plants that were not necessary for ancestors that lived in the water?

Cuticles allow them to grow bigger and taller.
Cuticles help them transport water.
Cuticles help prevent water loss.
Cuticles allow the performance of photosynthesis.
HELP PLS AND THX

Answers

Answer:prevention of water loss would be unnecessary

Explanation:

edge 2021

Cuticles are protective lining in the epidermal layer of plants. Cuticles helps to reduce water loss and protect the plants from environmental stresses.

What is cuticles?

Cuticle is an organism's external layer or area that makes touch with the environment. The epidermis secretes the dead, noncellular cuticle in many invertebrate species. In humans, the cuticle is the epidermis, and this layer may include colours and chitin, similar to arthropods.

The cuticle is a protective coating that protects the epidermal cells of leaves and other organs while preventing water loss in some higher plants.

It is made up of cutin, a waxy, water-repellent compound related to suberin that is present in the corky tissue's cell walls. Hence, option c is correct.

Find more on cuticles:

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The amount of matter in a given space or volume

Answers

This would be density.

In the given question, the amount of matter in a given space or volume is called density.

Matter is defined as any substance or anything that has mass, and which occupies space.

Density is a physical property of matter and can be defined as the mass of an object divided by its volume. Density has unit typically in grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).

It is an important property of matter because it helps to identify and distinguish different materials based on their mass and volume.

Therefore, density is the amount of matter in a particular region or volume.

Learn more about Matter here:

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