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
Answer:
Mechanical energy
Explanation:
Pls help meh......Due at 3:00
What type of elements bond covalently?
What are two covalently bonded atoms called?
When drawing an electron dot structure, should you pair up as many electrons as you can around their original atom or should you leave them single?
How does this help you discover how many bonds they will form?
If a molecule has a triple bond, how many pairs of electrons does it share? How many total electrons is that?
What is a molecular compound?
What are properties of molecular compounds?
Why are molecular compounds poor electrical conductors?
How do bonded atoms become partially charged?
What is a nonpolar bond?
What is a polar bond?
Do you think water in the Dead Sea would conduct electricity? Why?
Answer: most molecular compounds poor conductors because they do not have charged particles to carry current.
Explanation:
Please help I need an answer like RIGHT NOW!
Answer:
for what nothing is heree??????????? <3
Explanation:
⚠️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 ⚠️
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 (:
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
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:
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
In your own words (Please don't search it up, and don't answer if you don't know.)
Please tell me the meaning of Outcome Variable and Test Variable
Thank you!
Answer: An outcome variable is a variable that is the final or missing variable in an experiment and a test variable is a variable that is being tested to find the final variable or missing variable (The outcome)
Explanation:
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
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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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?
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.
A compound is the chemical bonding of what
Answer:
A compound is a molecule made of atoms from different elements
Explanation:
All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.
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
Answer:
both represent physical weathering
Explanation:
Answer:
B. both represent physical weathering
Explanation:
I did the test