An indicator does which one of the following in the presence of acids and
bases?
A. Conducts electricity
B. Combusts
C. Corrodes
D. Changes color
SUBMIT
Answers
Answer: d) changes color
Explanation:
Related Questions
For each of the following four topics, write a paragraph answering the questions below each topic. This exercise should help you decide which topic on which you would prefer to write.
1.Compare and contrast a sport that is played in two different parts of the world. Describe how differently it is played in the two regions, and the impact it has on the two societies.
a. What interests you about this topic?
b. What sport and regions do you think you would choose and why?
c. How would you go about getting information on this topic?
Answers
Being interested in a certain topic wants to study (or emerge as concerned with) that subject matter for its personal sake.
Describe how differently it is played in the two regions.dual sports activities are performed by two human beings opposing every different, while crew sports contain prepared companies of people competing in opposition to every different.twin sports are performed through two people opposing every different, while team sports activities involve organized businesses of humans competing with every other.Many sports activities rely on desires, which might be points scored in soccer, lacrosse, and floor hockey, whilst other sports activities depend upon points with a landing, runs, or falls.Learn more about team sports here:-
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1.what is the force to be applied to a mass of 20 kg to produce an acceleration of 2ms-2?
Answers
Answer:
the force applied is 40 newtons, i think
Explanation:
Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
What type of electromagnetic waves will we need to use to complete our discussion-based assessment in the virtual meeting room?
Answers
Answer:
im literally learning about electromagnetic waves and light waves are electromagnetic waves which means they do not need a medium to travel through.
Explanation:
When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
I NEED HELP PLEASE
5. A substance that does not transmit light is _______________________.
A. translucent B. opaque
C. transparent D. polarized
06. Material that allows some light to pass through and scatters the rest is called ___________.
A. translucent B. transparent
C. polarized D. opaque
_ 7. Material that allows light to pass through it is called _____________________.
A. translucent B. transparent
C. polarized D. opaque
_____ 8. Light that is absorbed is converted to __________________ radiation.
A. radio wave B. ultraviolet
C. light D. infrared
_____ 9. A ___________________ separates white light into the visible spectrum of light.
A. plane mirror B. convex lens
C. concave lens D. prism
_____ 10. Light is a _________________ wave.
A. longitudinal B. seismic
C. transverse D. compressional
Answers
Answer:
B for answer 5
Answer:
opaque
translucent
transparent
ultra violet (not sure about this one)
convex lens
transverse
Calling all physics geniuses! An object is placed 20cm in front of a convex lens whose focal length is 12cm. What type of image is formed?
Super helpful if you could answer in terms of inverted/upright/magnified/diminished/real/virtual...etc.
Answers
1/v + 1/u = 1/f
1/12 - 1/20 = 1/f
5-3/60 =1/f
2/60 = 1/f
1/30 = 1/f
f= 30
This was done by mirror formula
Hope you understood
Determine the relationship between neutron stars and black holes
Answers
Answer:
When a dying star has a mass which is 1.4 to 3 times that of the sun, it will form a neutron star. Stars with a mass greater than thrice the sun's mass, black hole is formed.
Explanation:
A Tug Boat's engines can exert 10,000 N of Force to drag another ship 1 kilometer. How much work was done to drag the ship 1000 meters?
Answers
force = 10,000 N
distance= 1000 meters or 1 km
work done = Force * Distance
work done= 10000* 1000 = 10000000 Nm or 10000 kNm
It’s cold outside and you decide to cook some pasta. As you boil the noodles, the kitchen window begins to fog up. Which processes are at work here?
evaporation and thawing
condensation and evaporation
vaporization and condensation
boiling and freezing
Answers
Answer:
Condensation and evaporation.
Explanation:
Fog shows up when water vapor, or water in its gaseous form, condenses. During condensation, molecules of water vapor combine to make tiny liquid water droplets that hang in the air. You can see fog because of these tiny water droplets.
A/An _____ is an apparatus that converts electric energy to kinetic energy.
Answers
Answer: A Motor converts electrical energy into kinetic energy, the opposite of a generator, which converts kinetic energy to electrical energy.
Thus the response above is right.
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How does a low pressure system determine the weather in an area?
It causes the cool air to rise and warm up.
It decreases the chance of precipitation in the area.
It decreases the moisture in the air.
It forms clouds as the warm air rises and cools down.
Answers
Answer:
In a low-pressure zone, wind is circulated inwards and upwards rapidly. As a result, air rises and cools; clouds and precipitate are formed. Low air pressure produces unstable weather conditions like rain or storms.
Explanation:
Answer:
D)
Explanation:
BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.
Answers
Answer:
If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.
Hope my answer helps you ✌️
Mark BRAINLIEST
Lab Report
Motion and Forces
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_MotionAndForces_Alice_Jones.doc).
Introduction
What was the purpose purpose of the experiment?
The purpose of the experiment is to test the hypothesis.
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Questionnaires and observations.
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how the sum of forces acting on an object affect its motion? Write an evidence-based claim.
Type your answer here:
Which mass, A, B, or C, was the greatest? Use the observations from your experiment and your knowledge of Newton’s laws of motion to write an evidence-based claim.
Type your answer here:
Make a model that shows the forces acting on two blocks on a flat, frictionless surface:
A 1 N block at rest
A 1 N block with 2 N of force applied in one horizontal direction
Include arrows to represent the forces and labels to indicate the magnitude of each force. Use your model to compare and explain the motion of each block.
Type your answer here:
Answers
Answer's C
Explanation: The matter that surrounding this whole planet or time and frequencies the motion and forces that people can't determine unless made a hypothesis
Write a statement about the relationship between
frequency and wavelength (what happens to the frequency if the wavelength is smaller? larger?)
(They are trying to teach this in remote learning ;-; also why don't they have a Science choice?)
Answers
Answer:Just as wavelength and frequency are related to light, they are also related to energy. The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy.
Explanation:So, if the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. ... That means that longer wavelengths have a lower frequency. Conclusion: a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency!
Extra explanation: All waves can be defined in terms of their frequency and intensity. c = λν expresses the relationship between wavelength and frequency.
Which term is described as the height of a wave from its rest position to its crest?
Question 3 options:
A) amplitude
B) wave height
C) crest height
D) wavelength
Answers
Answer:
A)
Explanation:
amplitude is the amount of amps or decibals a sound wave is and is measured by going high and low depending on the sound.
Because it measures the height of decibels going high and low, hope this makes sense :)
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
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
What is potential energy ?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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The half-life of sodium-24 is 15 minutes. What was the original mass of Na-24 if 5.0 g remains after 1 hour?
20 g
40g
80g
100g
Answers
40g remains after an hour.
answer
40g
(you can just say a color)
Answers
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.
Pls mark Brainliest with the crown.
(science) Just checking meh answer will mark brainliest
Many places on Earth are shaken by earthquakes. The Pacific Coast of the United States is one such area. What causes these earthquakes?
a. erosion
b. gravity
c. solar heating
d. plate movement
Answers
Answer:
D. Plate movement
Explanation:
Since they cause earthquakes...
Did you notice that you could use the magnet to get the paper clip to move without
touching it?How was this similar to the floating plant?A change in motion can only happen when a force is acting on an object.What force was acting on the paper clip?Using the paper clip and the magnet as an example, make a claim how magnets can make an object move without touching the object.
Answers
Yes, I noticed that a magnet could be used to move the paper clip without touching it.
It is similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.
The force acting on the paper clip is described as the magnetic force,
The claim can be made that magnets could move an object without physical contact by using the magnetic force to exert a force on the object.
What is magnetic force?A magnetic field is described as a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
In this case , the magnetic force arose due to the interaction between the magnetic fields of the magnet and the paper clip.
The magnet has a magnetic field around it, which exerts a force on any nearby magnetic material, such as the paper clip.
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Answer:
Yes, I noticed that a magnet could be used to move the paper clip without touching it.
It is similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.
The force acting on the paper clip is described as the magnetic force,
The claim can be made that magnets could move an object without physical contact by using the magnetic force to exert a force on the object
Explanation:
Match the elements to their periodic table groups based on their uses or properties.
{Element is used as a disinfectant}
{Element important for the proper}
{functioning of the human body.}
{Element always stored under oil.}
{Compounds of this element are
used in manufacturing of paints.}
group 3–12
group 1
group 17
group 2
Answers
Answer:
group 3–12used for manufacturing paints and plastic
group 1 stored under oil they are very reactive
group 17used as a disinfectant
group 2 used to reduce stomach acid
Explanation:
The elements that are used as disinfectant comes under the group of halogens. So, group 17.
What is meant by the group in a periodic table ?The group is defined as a column in the periodic table, that contains the elements having the same number of valence electrons.
Here,
1) Element is used as a disinfectant.
The elements that are used as disinfectant comes under the group of halogens. So, group 17.
2) Element important for the proper functioning of the human body.
The compounds of group 2 elements are used for the neutralization of the acids in stomach.
3) Element always stored under oil.
To avoid the oxidation of the elements, the group 2 elements are always stored in oil.
4) Compounds of this element are used in manufacturing of paints.
The elements like Zin, Cobalt, Bromine, etc. are used to make paints. So, group 3 - 12.
Hence,
The elements that are used as disinfectant comes under the group of halogens. So, group 17.
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What is an ecosystem? Group of answer choices An ecosystem is all different populations of animals in an area. An ecosystem is a community of plants and animals and their physical surroundings. An ecosystem is a single example of a particular species of plant or animal. An ecosystem is all the organisms of a particular kind of species and their surroundings.
Answers
Answer: An ecosystem is a community of plants and animals and their physical surroundings
Explanation: An ecosystem is a geographic area where plants, animals, and other organisms as well as weather and landscape work together to form a bubble of life. Ecosystems contain biotic and abiotic factors both. Biotic factors include plants, animals, and other organism
Answer: An ecosystem is a community of plants and animals and their physical surroundings.
Explanation: Ecosystem plays an essential role for the existence of living organisms in the planet Earth. A balanced ecosystem is attained as a result of various reasons it includes the live ratio of diverse varieties of organisms in a particular ecosystem, necessary physical, biological, and chemical conditions that promotes the living of organisms, and the balanced atmosphere attained as the result of temperature, wind, and humidity.
As all the above mentioned properties are necessary for maintaining a sustainable ecosystem, it is clearly understood that an ecosystem is a community of plants and animals and their physical surroundings.
help me please 35 points and mark brainliest
Answers
1. The kinetic energy of the truck is 1959940.8 J
2. The kinetic energy of the car is 463037.04 J
1. How do i determine the kinetic energy of the truck?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of truck (m) = 6000 KgVelocity of truck (v) = 92 Km/h = 92 / 3.6 = 25.56 m/sKinetic energy of truck (KE) =?KE = ½mv²
KE = ½ × 6000 × 25.56²
KE = 1959940.8 J
Thus, the kinetic energy is 1959940.8 J
2. How do i determine the kinetic energy of the car?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of car (m) = 1200 KgVelocity of truck (v) = 100 Km/h = 100 / 3.6 = 27.78 m/sKinetic energy of car (KE) =?KE = ½mv²
KE = ½ × 1200 × 27.78²
KE = 463037.04 J
Thus, the kinetic energy is 463037.04 J
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do footballers get paid even though they do not win a match?
Answers
Answer:
However, in general, football players are paid whether they are paid or not. However, it is clear that if they are not on the field, they will not get a win, a goal or more.
Answer:
no
Explanation:
they shouldn't get paid unless they win
How do atoms form a new substance? by gaining electrons from each other by losing electrons by losing neutrons to each other by sharing electrons with each other
(SCIENCE 8TH GRADE MIDDLE SCHOOL)
Answers
Answer:
A produces new substances by changing the way in which atoms are arranged. In a chemical reaction, bonds between atoms are broken and new bonds form between different atoms. This breaking and forming of bonds takes place when particles of the original materials collide with one another.
Answer:
When atoms combine to form a new substance, they are forming chemical bonds that bind them together. It is these bonds that define what is formed. ... A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound
Explanation:
PLEASE HELP ASAP WILL GIVE BRAINLIEST
The law of conservation of matter states that matter can be neither created nor destroyed. Your friend shows you the following chemical equation: CaCO • CaO + CO2
He says that because the oxygen atoms are split between two different molecules in the products, the equation does not support the law of conservation of matter. Is your friend right? Explain your answer.
Answers
Reactant:
1 Ca
1 C
1 O
Product:
1 Ca
1 C
3 O
Therefore, your friend is right because the law of conservation of matter is not followed in this chemical equation.
I agree with the first person
According to conservation of matter, there should be equal amounts of all elements on both the reactant and product side.
Reactant:
1 Ca
1 C
1 O
Product:
1 Ca
1 C
3 O
Therefore, your friend is right because the law of conservation of matter is not followed in this chemical equation.
What do geoligists use to mark divisions in geologic time? No Files or links. 8th Grade Please help asap.
A- Abrupt changes in the fossil record
B- Frequent episodes of climate change
C- movements of Earth's tectonic plates
D- Rates of radioactive mineral decay
Answers
Answer:
A
Explanation:
A- Abrupt changes in the fossil record
Where does oceanic and continental crust meet?
Answers
They both meet above the the earths mantle.
If that’s not the answer your looking for please tell me and I will help more. If you have Letter options to choose that have answers. Telling me those answers you have to choose from could help me find the best answer for you