Got stuck on question 3 need help please
Why is a control group important?
A. It changes all the time, allowing us to see if the experimental group stays the same.
B. It is used to see if the experimental group causes a change.
Answer:
A. It changes all the time, allowing us to see if the experimental group stays the same.
control group mean the thing the stay the same during the Experiment.
I hope this help
I hope this is correct
Answer:
The correct answer is:
It is used to see if the experimental group causes a change.
Explanation:
I got this right on my Edpuzzle
Hope this helps : )
What is not a reason to use models in science
Answer:
they may not be accurate - climate models are hugely complex in terms of numbers of factors involved in atmospheric systems, accuracy is lost in the process of oversimplification.
they rely on the expertise of the people making them.
different people may interpret them in different ways.
hope it helps u..........
What is the general shape of the graph line?
A positively sloping diagonal
A negatively sloping diagonal
A half-parabola
A hyperbola
Answer:
A
Explanation:
Positive slope lines have a left to right ascent. A negative slope is present on lines that descend from left to right. Consequently, a diagonal line with a positive slope (/) would be to the right. Thus, option A is correct.
What is positively sloping diagonal?The height difference between two tile corners that is on the diagonal. A hidden value is used to determine if a tile can be seeded on, passed by a cart, or have the corner of the pavement tile lowered.
When two variables have a positive slope, it means that they are positively correlated; that is, when x rises, y rises as well, and when x falls, y falls as well.
A line on a line graph that has a positive slope rises as the line advances from left to right.
Be aware that a line's positive slope causes it to slope upward from left to right. Remember that a line with a negative slope descends from left to right. Keep in mind that a line has no slope when it is horizontal.
Therefore, positively sloping diagonal general shape of the graph line.
Learn more about positively sloping diagonal here:
https://brainly.com/question/26755404
#SPJ2
why it is important to learn the metric system and what implications could occur if we do not take into consideration the metric system when trading commodities with other countries
Answer:
to help us to be able to trade freely
The diagram shows two sets of vectors that result in a single vector. Four vectors added using the tip to tail method. The first vector is labeled 100 meters and drawn east, the second vector is labeled 250 meters and drawn north, the third vector is labeled 200 meters and drawn east, the fourth vector is labeled 50 meters and drawn north. A last vector, the resultant, is drawn as a dashed arrow from the tail of the first to the tip of the last. What are the first two steps for finding the magnitude of the resultant vector?
1- find the square of the first horizontal vector and the square root of the first vertical vector
2- find the square root of the first horizontal vector and the square root of the second horizontal vector
3- find the sum of the two horizontal vectors and the sum of the two vertical vectors
4- find the difference between the two horizontal vectors and the difference between the two vertical vectors
Answer:
find the sum of the two horizontal vectors and the sum of the two vertical vectors
Explanation:
made the most sense. you can beat me up if its wrong :D
Answer:
find the sum of the two horizontal vectors and the sum of the two vertical vectors
Explanation:
edge 2021
the comment question the answer is "sum"
Newton's second law of motion describes inertia.
True
False
Answer:
yep it is false the definition says nothing about inertia
Explanation:
what do you mean by force
Answer:
a force is a movement on a object such as kinetic energy
Question 5 of 10
Which option is a potential environmental benefit of adopting a new
technology?
A. Increased research and development time
B. Preservation of habitat
C. Improved medical outcomes
D. Increased customer satisfaction
SUBMIT
Answer:
preservation of habitat
Explanation:
i just took the test
What is the environmental advantage of technology?
Renewable energy has enabled us to capture this naturally occurring energy and convert it into electricity or useful heat through devices such as solar panels, wind and water turbines, which reflects a highly positive impact of technology on the environment.
What are the impact of technology on environment?
The environmental impact of technology does not end with the raw materials and where they have come from.
Learn more about environmental benefit here : brainly.com/question/1888324
#SPJ2
which scenario would be classified as a conceptual model
The scenario that would be classified as a conceptual model is A student thinks of bouncing balls as representing gas molecules.
What is a Conceptual Model?
A system is portrayed in a conceptual model. It consists of ideas that aid in knowing, comprehending, or simulating the subject the model portrays.
A variety must be stable for it to be a true explanation. When sugar is completely dissolved in water, it can stand without the sugar dissolving again for an unlimited period of time. In addition, the sugar will stay in the water if the sugar-water solution is filtered.
This is due to how tiny the liquefied particles are in a solution—they typically have a diameter of less than 1 nm. Depending on the type of nature that has been dissolved, solute particles might be particles, ions, or molecules.
Hence, option A is a scenario of a conceptual model
Read more about Conceptual Models here:
https://brainly.com/question/14620057
#SPJ1
Which scenario would be classified as a conceptual model?
A. A student thinks of bouncing balls as representing gas molecules.
B. Marshmallows and toothpicks are used to show the composition
of a water molecule.
C. A map and a map scale are used to represent a larger area of land.
D. A weather map shows different temperatures over most of the
United States.
In the equation E = mc2, E stands for
Answer: energy=mc^2 is the answer
Answer:
E represents units of energy
Explanation:
What would most likely happen as a result of the generator in a wind turbine breaking? The blades would not be turned. Less steam would be produced. Electricity would not be generated. Solar energy would not be absorbed.
Answer:
Im guessing that the correct answer would be C.) Electricity would not be generated.
Explanation:
Apologies if im wrong.
Electricity would not be generated if the generator in a wind turbine breaks and is denoted as option C.
What is a Wind turbine?
This is a device which converts the kinetic energy from the wind into electrical energy.
The generator provides the kinetic energy which when broken, electricity generation is hindered.
Read more about Wind turbine here https://brainly.com/question/15321264
#SPJ2
If your body is wet what is the lowest electrical voltage can be fatal?
Answer:
The lowest electrical voltage would be 100 volts.
Answer:
15 volts would be fatal
Tell me everything you have learned about the scientific method
Tell me
Answer:
observe question hypothesize test your theory analyze your data and report your results.
Explanation:
you have to do it in that order.
Which part of the diagram represents the proton? A) A B) B C) C D) D
Answer:
c
did it on usa test prep
PLSS HELP ILL MARK YOU BRAINLIEST !! PLS ANSWER BOTH!
How can the motion of an object that is already moving change?
How can the motion of an object thatnis NOT moving change?
Answer:
"They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object"
"When a force acts on an object that is stationary or not moving, the force will cause the object to move, provided there are no other forces preventing that movement."
The answer to both questions is the same answer:
That can only happen if force acts on the object.
Which part of an atom is mostly empty space?
Answer:
The electron cloud is mostly empty space
Please help this is due in an hour!!!!!
Answer:
1. Collision- the sudden, forceful coming together in direct contact of two bodies
2. Newton's third law of motion is naturally applied to collisions between two objects. In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction.
3. Momentum is the product of a moving object's mass and velocity. When two objects collide the total momentum before the collision is equal to the total momentum after the collision
which of the following actions should you take if you are sensitive to strobe lights?
Answer:
Strobe light, computer monitor, tv screen all these are responsible for epilepsy seizures if some one is sensitive towards these lights.
Explanation:
Around 3% of the people are very sensitive towards to the strobe lights. The strobe light explore to the epilepsy and seizure. Certain of the visual seizures trigger to the intensities towards to the seizures. This condition of a person is called photosensitive seizures. This condition is more common among the adolescent and children.
It becomes less frequent as the age going on. It can happen with the light of tv and computer images scrolling. The intense strobe light also responsible for the seizures. If a person facing such type of problem consult to the doctor immediately. Person should avoid extreme environmental light such video games, tv screen computer monitor, strobe light, social media etc.
Q3. At an altitude of 6679 km above the center of the Earth, the
International Space Station can complete one orbit in 1.5 hours.
Determine the average speed of the ISS. Explain why you should
calculate speed in this case, and not velocity.
Answer:
5524.8 m/s
Explanation:
Given that,
Altitude above the surface of earth is 6679 km, the Space Station can complete one orbit in 1.5 hours. We need to find the average speed of the ISS. The average speed of its orbit is given by :
[tex]v=\sqrt{\dfrac{GM}{R}}[/tex]
R is distance from Earth
R = r + d, r is the radius of Earth
R = 6371 + 6679
R = 13050 km
So,
[tex]v=\sqrt{\dfrac{6.67\times 10^{-11}\times 5.972 \times 10^{24}}{13050\times 10^3}}\\\\v=5524.8\ m/s[/tex]
or
Hence, the average speed of ISS is 5524.8 m/s.
22. Which unit of measure never is used in the International System of
Units?
inches
milliliters
grams
centimeters
Answer:
Inches
Explanation:
An inch is a unit of measurement in the Imperial system of measurement. Everything else is used in the International System of Units.
The unit of measure never is used in the International System of Units is inches. The correct option is A.
What is International System of Units?The International System of Units, abbreviated SI in all languages and sometimes pleonastically as the SI system, is the modern version of the metric system and the world's most widely used measurement system.
The International System of Units (SI), also known as the French Système International d'Unités, is a decimal international system of weights and measures derived from and expanding on the metric system of units.
The 11th General Conference on Weights and Measures adopted it in 1960, and it is abbreviated SI in all languages.
The International System of Units (SI) is a measurement system based on seven basic units: the metre (length), kilogram (mass), second (time), ampere (electric current), kelvin (temperature), mole (quantity), and candela. These base units can be combined with one another.
Thus, the correct option is A.
For more details regarding International System of Units, visit:
https://brainly.com/question/26178810
#SPJ6
Travels 10m north followed by 24m East. What is the distance the student travelled in meters
Answer:
34
ushshwywywhqkowkw
she
wjehgebqk
whwh
Answer:
34
Explanation:
24+10=34
Can a scientific ‘law’ change?
Answer:
Nope
Explanation:
Because take for example Newtons law
iartz clock is more approp
time, why
1.
Group-C
Describe the importance of measurement in our daily life.
2.
Express newton and pascal in terms of fundamental units.
3.
How is the volume of an irregular solid measured? Explain.
Express watt and joule in terms of fundamental units.
Express the following numbers in the scientific notation.
i) 2000085000 ii) 0.000825 iii) 2000.82
Convert the following scientific notations into the general form.
i) 3 108
ii) 1.5 x 10-5 iii) 2.57 x 10-7
Convert the following:
i) 54 km into cm
ii) 2 mm² into m?
The volume of water in a measuring cylinder is 50 ml. When a piece of stone is in
in the cylinder, the volume of water increases to 87.3 ml. Calculate the volum
stone.
Group-D
[Ans: 37.3
Q3. the volume of an irregular solid can be measured by immersing it in water in a container that is calibrated or that has markings.you can see it on how the level of the water goes up.
In a lab, the mass of object A is 2.5 kg. Object A weighs:
Answer:
25N
Explanation:
Assuming the lab is on earth:
w = mg = 2.5 (9.81) = 25N
How fast must a person’s average velocity be in meters per second to travel 4.5 km in 30 minutes?
Answer:
0.833m/s
Explanation:
1hr=60min
=30min
{1×30)÷60=1/2
4.5/1.5=3km/hr
3×5/18=5/6or0.833m/s
From what process energy is liberated in the sun?explain it in brief.
Answer:The sun produces energy through nuclear fusion.
Explanation:
The sun produces energy through nuclear fusion. The sun is a large ball of hydrogen and helium undergoing constant nuclear fusion, in which atoms of hydrogen combine to form helium and release a large quantity of energy. The enormous pressure in the sun keeps the fusion running for huge amounts of time.
what is science and how does it work?
Imagine you are an astronomer who recently discovered a new planet orbiting a distant star. Which set of characteristics would you use to classify this planet as an inner or terrestrial planet? Check all that apply.
Answer:
A: dense and solid
E: located near a star
Explanation:
Answer:
A: dense and solid
E: located near a star
Explanation:
A penny is dropped from the top of a building 290 m high. Ignoring air resistance, if
the penny falls straight down, with what speed would it hit the ground?
Answer:
Vf = 75.4 m/s
Explanation:
In order to find the final velocity of the penny when it would hit the ground, we will use the equation of motion. In this particular case the third equation of motion can be used. The third equation of motion is written as follows:
2gh = Vf² - Vi²
where,
Vf = Final Velocity of the penny when it would hit the ground = ?
Vi = Initial Velocity of the penny = 0 m/s (Since, the penny starts from rest)
g = acceleration due to gravity = 9.8 m/s²
h = height of building = 290 m
Therefore,
2(9.8 m/s²)(290 m) = Vf² - (0 m/s)²
Vf = √(5684 m²/s²)
Vf = 75.4 m/s
