Answer:early models of telephones were used with a twirl of numbers
Explanation:
Not advanced technology
Answer:
flip phone
Explanation:
they fliped and it was small and u ddint have many games back then it was the phone after the twirling phone
What molecule makes up 3/4s of the surface of Earth?
A: C6H12O6
B:CO2
C: H2O
D: NaCl
Je suis presque sûr que c'est C: H20
Please help me with this I will give out extra points with the brain thing if you help me with this science question 2/5 image below. I promise
plzzz help card sort for energy
Please help I will give brainlist
How would you write the formula for sugar-water solution if the formula for salt-water solution is written as NaCl(aq).
The formula for solid salt is NaCl(s).
The formula for solid sugar is C6H12O6(s).
Answer:
Explanation:
The chemical or molecular formula for sucrose is C12H22O11.
BRAINLIST IF U ARE CORRECT AND ANSWER ALL OF THEM!!!!!!!!!!Match the name of the way water is used to its description.
Drag the answers into the correct boxes.
Water used in businesses such as restaurants, hotels, offices, grocery stores, police stations, and malls.
Water that is delivered to homes and schools.
Water that is used for raising crops in dry areas.
Water used in rural areas where people dig wells.
Commercial Domestic Public Irrigation
Answer:
I think it is the first one all those places do use water
which of molecules do u get from food
Answer:
carbohydrates, proteins and fats.Explanation:
Answer:
Explanation:
Instead, let's start applying what we learned so far by looking at the most common groups of molecules in food: carbohydrates, proteins and fats. These molecules are also called 'macronutrients' and are essential for us from a nutritional point of view.
Is the process of making a glass of lemonade a physical or chemical change?? Explain.
Sodium is a metal (Na), what makes the Neutral atom of Sodium different
from the lonized atom of Sodium
A neutral atom has more protons than an ion
Neutral atoms have more neutrons than an ion of an tom
Neutral atoms have a charge while ions do not
Neutral atoms have the same amount of protons and electrons while an ion has
either gained or lost an electron
Answer:
D
Explanation:
An ion is created because an atom doesn't have a balanced number of protons and electrons. A positive ion is created by an atom losing an electron and a negative ion is created by an atom gaining an electron.
Would the following atoms have similar reactivity?
A) Elements in Group 2 have 2 energy levels.
B) Elements in Period 7 have 7 valence electrons.
C) Elements in Group 13 have 13 valence electrons.
D) Elements in Group 13 have 13 valence electrons.
Elastic potential energy is energy due to
Question 2 options:
mass
motion
height above ground
change in shape
Acceleration due to gravity =
100 m/s2
9.8 m/s2
62.3 m/s2
1.2 m/s2
Answer:
9.8
Explanation:
no explanation bbbbnnnnnnnnnnnnnnnnnnn
Mammals use their lungs to provide oxygen for themselves from the air. Fish spend a majority of their time in the water, and instead, developed gills. What is the function of gills? *
a-Gills break down water into hydrogen and oxygen so the fish can use the oxygen.
b-Gills allow the fish to breathe oxygen in the water and the air.
c-Gills allow the fish to use the oxygen that is dissolved in the water.
d-Gills allow the fish to use the oxygen in the air, but use it more slowly so they can live in water.
The Barber's have a circular flowerbed in their front yard. The want to put fertilizer on ha
Answer:
C
Explanation:
a fish cant breath outside water
Mammals use their lungs to provide oxygen from the air, while fish spend time in the water; instead, fish developed gills because gills allow the fish to use the oxygen that is dissolved in the water, which is option c.
What is the significance of the gills in animals?Gills are important for fish and other aquatic animals as they are the primary respiratory organ in aquatic animals, helping them obtain oxygen from water and release carbon dioxide into the surrounding water. Gills in fish and other aquatic animals help them breathe underwater and maintain vital metabolic processes.
Hence, mammals use their lungs to provide oxygen from the air, while fish spend time in the water; instead, fish developed gills because gills allow the fish to use the oxygen that is dissolved in the water, which is option c.
Learn more about the gills here.
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Which of the water alternative energy source has an energy transfer chain of GPE-->KE-->EE?
What is the influence of temperature on a chemical change?
Answer:
Increasing the temperature will cause chemical changes to occur faster. Decreasing the temperature, causes the particles to lose energy which causes them to move around less and slower. The less they move, the less collisions occur, and the less reactions occur between the chemicals = slower reaction rate.
Explanation:
Please mark me brainliest
European and North America coal fields line up.
A.true
B.false
Answer:
The Answer Is A
Explanation:
___________________ can be renewable or nonrenewable.
isn't it fossil fuels? i'm not sure
Answer:
wood, aluminum, gemstones, fabric, paper, rock and many others can be renewable or nonrenewable.
Hope i get brainliest
Explanation:
The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a
Answer:
I guess c?
Explanation:
take my answer by a grain of salt but the process of boiling water leads to physical change because eventually all water will become water vapor if boiled long enough
How many different elements are involved in the reaction shown? Record the answer in the grid. Plz help :))
Ca=Calcium
Ci=Iron
Ag= Silver
No-Nobelium
Gravitational potential energy is energy due to
being in motion
being on the ground
height above ground
doing work
Answer:
being on the ground
Explanation:
Answer:
Gravitational potential energy in terms of work done against gravity. ... We define this to be the gravitational potential energy (PEg) put into (or ... Figure 2. The change in gravitational potential energy (ΔPEg) between points A and B
Explanation:
hope this helps
plz help me on the other two :) i already did the third one
The arrow is called a
Which three temperature readings all mean the same thing?
273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
273 Kelvin, 0 degrees Celsius, 212 degrees Fahrenheit
373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
Someone please help!
Answer:
273 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
Explanation:
which one should I go in ??????
Answer:
the hatchery I think
Explanation:
because i think