Chemistry Middle School

It is best to say that electric motors require _______ to work. a. a continuous current b. a galvonometer c. a generator d. energy

Answers

Answer 1

d

i am not 100% sure though

Related Questions

What internal physical structure protects the organs and supports the body of the animal? Fur Feathers Skeleton Skin

Answers

Answer:

Skeleton

Explanation:

Answer:

skeleton

Explanation:

Which word names melted rock and minerals found beneath Earth's crust?

A. lava
B. magma
C. rhyolite
D. gabbro

Answers

Magma is the answer

magma is the answer

In the formula shown, what is the total number of atoms present?

Answers

Answer:

your answer

24. hope helpful answer

the answer is 24 hope this helps :)

How is Earth's surface most likely To
change in a place that has extensive tree growth?

A. Top soil will be carried away by wind and water.
B. cracks in rocks will deepen as the roots grow.
C. Big furrows will form due to increase in rainfall.
D. wear away due to abrasion by vegetation.

Answers

Answer:

A. Cracks in rocks will deepen as the roots grow.

The right answer would be Cracks in rocks will deepen as the roots grow.

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

5-8 complete sentences paragraph, explaining why you would want to make a change to help our ecosystems. (including a change you think would help our ecosystems)

Answers

Global warming affects many processes in biological ecosystems. Different species of flora and fauna change their habitats and geographical areas according to climate change and specific geographical environments. Areas of occurrence of specific species, for example insects in terrestrial areas and fish and arthropods in the seas and oceans, change. Bird habitats change, so migrations of some bird species may also be subject to modification. In the situation when forest areas dry out and turn into steppes and deserts, changes in natural habitats and areas of occurrence of species change and concern simultaneously many species of flora and fauna.

What properties did you identify when observing the sedimentary rock?

Answers

Answer:

Explanation:

Bedding. Bedding is often the most obvious feature of a sedimentary rock and consists of lines called bedding planes, which mark the boundaries of different layers of sediment. .

Graded beds are common when a sediment is being deposited by a slow‐moving current.

Fossils.

Desiccation cracks and ripple marks.

Sedimentary rocks contain rounded grains in layers. The oldest layers are at the bottom and the youngest layers are at the top. Sedimentary rocks may contain fossils of animals and plants trapped in the sediments as the rock was formed.

The properties you identify when observing is called bedding

Which SI unit is most appropriate for measuring density?

A.
Kiloliters (kL)

B.
Grams per cubic centimeter (g/cm3 )

C.
Cubic meters (m3 )

D.
Liters per cubic centimeter (L/cm3 )

Answers

Answer:

kilogram per cubic meter

Explanation: SI unit for density is the kilogram per cubic meter (kg/m3). So the answer is C.

Answer: kilo gram per cubic meter (kg/m3)

EXPLANATION:
SI unit of density is kg/m3, for convenience we use g/cm3 for solids, g/ml
for liquids, and g/L for gases.

Please help, I’ll give brainliest!

Answers

Answer:

the coefficient of NO3 is going to be 2

Explanation:

Cu+2NO3−+2H2O→Cu2++2NO2+4OH−

The coefficient of NO3 will be 1

HELP MEEEEEEEEEEEEEEEEEEEEEEEEEE

Answers

U already got them wrong but if it is the type of questions u can review, the correct answers are:

Figure 1- decomposer

Figure 2- autotroph/producer

Figure 4- heterotroph/ consumer

Figure 6- decomposer

yes those are the correct answers ^ I agree

Name and Title:

Include your name, instructor's name, date, and name of lab.

Objectives(s):

In your own words, what is the purpose of this lab?

Hypothesis:

In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.

Procedure:

The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.

Data:

Record the elements present in each unknown astronomical object. Be sure to indicate “yes” or “no” for each element.

Hydrogen Helium Lithium Sodium Carbon Nitrogen
Moon One

Moon Two

Planet One

Planet Two

Conclusion:

Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

Using two to three sentences, summarize what you investigated and observed in this lab.
Astronomers use a wide variety of technology to explore space and the electromagnetic spectrum; why do you believe it is essential to use many types of equipment when studying space?
If carbon was the most common element found in the moons and planets, what element is missing that would make them similar to Earth? Explain why. (Hint: Think about the carbon cycle.)
We know that the electromagnetic spectrum uses wavelengths and frequencies to determine a lot about outer space. How does it help us find out the make-up of stars?
Why might it be useful to determine the elements that a planet or moon is made up of?

Answers

this seems like a class project

i support that frfr

Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.

A. It may change directions.

B. It will move at a constant speed.

C. It may slow down.

D. It may slow down or speed up.

E. It will stay stationary.

Answers

Answer:b

Explanation:

The answer is A, and c

BRAINLIEST IF CORRECT

Answers

Answer

its physical adaptions

I think is physical adaptations

Rocks around mid-ocean ridges teach scientists about
A. how wide abyssal plains are
B. how earthquakes happen
C. changes in the earth's crust

Answers

Brand new lambo f a cop car wit a pistol on my hip like imma cop

I believe it’s “C.changes in the earth’s crust

Compare and contrast the applications and benefits of circle graphs and bar charts

Answers

Answer:

benefits of circle graph- an easier visual representation

benefits of bar charts- shows better accuracy

plz download the doc and answer its due in 20 mins like bro wth

Answers

Answer:

and how do we know this is not a virus

Explanation:

sorry dude im just saying

Answer:

I agree with the comment above

sorry

Explanation:

How is the stimulus concept currently in our lives? (Ivan Pavlov) in TTQA

Answers

Answer:

stimulus is anything that can trigger a physical or behavioral change. The plural of stimulus is stimuli. Stimuli can be external or internal. An example of external stimuli is your body responding to a medicine. An example of internal stimuli is your vital signs changing due to a change in the body.

As humans, we detect and respond to stimulus in order to survive. For example, if you walk outside on a very sunny day, your pupils will constrict to protect your eye from taking in too much light and being damaged. Your body reacts to the stimulus (the light) to protect you.

What would be an appropriate tool to measure the temperature of water? Question 1 options:
A. ruler
B.triple beam balance
C. graduated cylinder
D. thermometer

Answers

Answer:

Thermometers

Explanation:

To accurately use and read a thermometer to measure water temperature. Thermometers are tools that are used to measure temperature

Answer:

Its D.

Correct me if I'm wrong.

Which of the following is an example of the geosphere interacting with the cryosphere? (5 points)

Erosion due to glaciers creates valleys.
Frost damages the cells in plant tissues.
Plant roots make cracks in rocks and soil.
Metals are obtained from minerals by humans.

Answers

erosion is geosphere and glaciers are cyrosphere

geosphere=Erosions
cryosurgery=glaciers
Hope this helps :))

1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL

Answers

To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

the correct answer is A 4.8 mL

During digestion, what happens in the stomach?

A. All food molecules are broken down into smaller molecules by chemical reactions.

B. Some types of food molecules are broken down into smaller molecules by chemical reactions.

C. Water in the food passes into the blood and travels to other organs where it is used.

D. Food passes into the blood and travels to other organs where it is used in various reactions.

Answers

Answer:

Explanation:

Food is digested in the stomach for several hours. During this time, a stomach enzyme called pepsin breaks down most of the protein in the food. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones.

Answer:

Explanation:

Please help me out with this question if you help me I will give you the brain thing and extra points. 6/9 image below.

Answers

Answer:

three quarter full 1 litre bottle

Explanation:

hope you have a great day :) and hopefully this is correct

Answer:

3/4 full two litre bottle because it has the highest value which is 21

Explanation:

What does this diagram represent?

A) a turbine
B) a motor
C) an electromagnet
D) a generator

Answers

Answer:

Option (D) A Generator

Explanation:

A generator is an equipment that has to do with the production of electricity by the use of electromagnetic induction. The generator has split rings that make contact with the exterior.

Learn what is a Generators here

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https://brainly.com/question/12950635

Hope my answer helps you✌️

Mark BRAINLIEST

D generator

It is a generator since the electromagnetic radiation makes the coil and rod to spin

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? (5 points)

a
Both represent physical weathering.

b
Both represent chemical weathering.

c
Process A is physical weathering and Process B is chemical weathering.

d
Process A is chemical weathering and Process B is physical weathering.

Answers

Answer:

i would say D i just did this but i kinda forgot so sorry if im wrong or A

Explanation:

Answer:

Answer A

THis is weathering since rocks are rocky surfaces are getting worn out. And we can assume that the water and glaciers use no chemicals to break these things down just physical force. Hope this helps!

Which pair of elements would be expected to have similar reactivities?
fluorine (F) and oxygen (O)
bromine (Br) and chlorine (Cl)
carbon (C) and copper (Cu)
sodium (Na) and sulfur (S)

Answers

Answer:bromine & chlorine

Explanation:

Elements with the same number of valence electrons have similar chemical properties. Since bromine and chlorine are in the same group (7A), both are expected to have similar reactivities.

Answer:

yes

Explanation:

Match the term to its definition (Lessons 6.03, 6.04 and 6.05)
(i can't fit this all without confusion)

Answers

Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome

Explanation:

rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.

Which point on the roller coaster's path represents the maximum (greatest) potential energy?

Answers

Answer:

Point A

Explanation:

The greatest point of the stored energy of an object is the time when it's in its highest point, just before falling.

Answer: A, because potential energy is determined on how high it is.

Please help me with number 14.

o(〃＾▽＾〃)o

Answers

Answer:

magnetic field,air,force

Explanation:

PLEASE correct me if im wrong and if im right thanks this answer and make me

I agree with the person above

Occurs when the particles in one part of an object _____________ more and ____________ with ______________ particles, making them ______________ ______________.
Different _______________ conduct ___________ at different ___________. ____________ are generally good conductors of heat compared to ______________ (paper, wood, plastics).
____________ are better conductors then liquids because _________________ in solids are ______________ _______________.

Answers

Occurs when the particles in one part of an object vibrate more and collide with neighboring particles, making them transfer energy.

Different materials conduct heat at different rates. Metals are generally good conductors of heat compared to non-metals (paper, wood, and plastics).

Solids are better conductors than liquids because the particles in solids are tightly packed together.

What is thermal energy?

Thermal energy is the energy associated with the random motion of particles in a substance. It is a form of kinetic energy created from the vibrational and rotational motion of atoms and molecules in a substance.

All objects contain thermal energy and when two objects of different temperatures are in contact, heat flows from the hotter object to the colder object until they reach a state of thermal equilibrium. Thermal energy is used in many applications such as heating, cooling, and even cooking food.

learn about conduction here https://brainly.com/question/20493362

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Match the following items.
1.
uses a lens to gather and focus light
refracting telescope
2. separates starlight into wavelengths
radio telescopes
3. pick up faint-lighted stars
spectrograph
4. see binary stars
giant refractors
5. see behind nebulae dust
giant reflectors

Answers

Answer:

1-uses a lens to gather and focus light- giant reflectors

2-separates starlight into wavelengths- spectrograph

3-pick up faint-lighted stars- radio telescope

4-see binary stars- refracting telescope

5-see behind nebulae dust- giant refractors

Explanation:

is it correct?

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