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 : )
I NEED HELP ON NUMBER 12 please!!! I’ll put u as Brainllest
Answer:
12.
m=pf/40
Explanation:
it's m=pf/40 because thats what i got
The cause of the moon is a cycle that is close to ____ long .
Answer:
29.5 days
Explanation:
It is a cycle that lasts nearly 29.5 days.
Answer:
28 days
Explanation:
The cycle is 28 days long.
What the major difference in PsychologyPsychiatry
Answer:
Farkındıkal
Explanation:
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.
*it’s actually carpentry*
two basic types of scaffolds are
a. metal and wooden
b. fixed and portable
c. self-supporting and suspended scaffolds
d. assembled and delivarablr scaffolds
*it’s actually carpentry* two basic types of scaffolds are "self-supporting and suspended scaffolds." The correct option is c.
Self-supporting scaffolds are freestanding structures that do not require external support. They are commonly used in construction projects and are designed to provide stability and support to workers.
Suspended scaffolds, on the other hand, are suspended from an overhead structure or support system. They are typically used for tasks such as window cleaning or exterior building maintenance. They rely on ropes, cables, or other means to suspend the scaffold platform.
A. Metal and wooden: This option refers to the materials used to construct scaffolds. While metal and wooden scaffolds are indeed types of scaffolds, they do not categorize the scaffolds based on their structural characteristics or support mechanism.
B. Fixed and portable: This option categorizes scaffolds based on their mobility. Fixed scaffolds are permanently attached to a structure, while portable scaffolds are designed to be moved and set up at different locations. This categorization is based on the mobility aspect and does not provide information about the support mechanism or structural characteristics of the scaffolds.
C. Self-supporting and suspended scaffolds: This option correctly categorizes scaffolds based on their structural characteristics and support mechanism.
D. Assembled and deliverable scaffolds: This option does not provide a comprehensive categorization of scaffold types based on their characteristics. While scaffolds do need to be assembled, and some scaffolds may be delivered to the worksite, this categorization does not provide information about their support mechanism or structural characteristics.
Therefore, option c. self-supporting and suspended scaffolds is the correct option as it accurately classifies scaffolds based on their structural characteristics and support mechanism.
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Read the claim about caffeine. Caffeine improves mental alertness and motor coordination. A university research study was conducted to examine how caffeine affects fine motor skills. Ten teen girls, ages 14 to 18, were given 200 mg of caffeine per day for 30 days. Thirty minutes after taking the caffeine, each subject took a timed fine motor skills test in which they fitted 20 small beads onto pegs. The graph compares each subject’s average results on the same test done 30 minutes before and after taking the caffeine. Which group would most benefit from the claim? people who sell coffee with caffeine people who sell decaffeinated tea diners that serve only drinks without caffeine manufacturers of caffeine-free bottled fruit juice
Answer:
A or People who sell coffee with caffeine
Explanation:
Edge 2021, Have a great day/night
Answer:
people who sell coffee with caffeine
Explanation: got it right
29
Which of the following would be a typical temperature range for a normal classroom?
a zero to 10 degrees Celsius
b. 15 to 20 degrees Celsius
c. 20 to 25 degrees Celsius
d. 30 to 40 degrees Celsius
Answer:
b
Explanation:
If a planet's orbital speed is 20 km/s when it's at its average distance from the sun which is most likely orbital speed when it is nearest the sun?
Answer:25km/s
Explanation:
The planet's orbital speed is higher when the planet is nearest to the sun.
The planet's orbital speed increases when it is nearest to the sun because of the strong gravitational force of the sun. A planet's orbital speed depends on the distance from the sun. The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves.
The farther it is from the Sun, the weaker the Sun's gravitational pull on the planet so it moves slower in its orbit around the sun so we can conclude that the planet's orbital speed is higher when the planet is nearest to the sun.
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A car moves with constant velocity along a straight road. Its position is x1 = 0 m at t1 = 0 s and is x2 = 66 m at t2 = 6.0 s . Answer the following by considering ratios, without computing the car's velocity.(Express your answer to two significant figures and include the appropriate units.) 1.What is the car's position at t = 3.0 s ? 2.What will be its position at t = 24 s ?
Answer: 1. 33, 2. 264
Explanation: 66m= 6s so, to find the position at 3s you just need to take 66/2 = 33m cause 3 is half of 6. & for 2 you will take 66x4= 264m cause it took 4s multiply by the original 6s to get 24s. Answer: 1 is 33m and 2 is 264m
Kenya has a pile of salt on the counter. She uses a pinch of it for a meal. Which of the following physical properties of the salt changes? 1.)Density 2.) Shape 3,) Solubility 4.)Thermal conductivity
Answer:
The answer is shape.
Explanation: It says physical so it means the physical shape taking some of the salt would not change the density solubility or the Thermal conductivity
A penny is dropped from the top of a 180m building. How much time will it take to fall to the ground?
Answer:
9.9 seconds
Explanation:
hope this helps :)
IF THE SPEED OF A BODY IS INCREASED FOUR TIME HOW WILL ITS KINETIC ENERGY BE AFFECTED ? SHOW BY CALCULATION?
Answer:
yes kinetic energy will be affected it will get increased 16 times.
Explanation:
while walking to school you approach an intersection and slow down from 2m/s to a stop 3s .what was your acceleration during this time interval?
Answer:
0.667 m/s^2
Explanation: Given that you slow down from 2m/s to a stop 3s.
Using first law of motion.
V = U - at
Where
Final velocity V = 0
Initial velocity U = 2 m/s
Time taken t = 3 seconds
Since the body slow down, the final velocity V will be equal to zero. And the acceleration will be negative.
Substitute all the parameters into the formula
0 = 2 - a × 3
3a = 2
a = 2 /3
a = 0.667 m/s^2
Therefore, your acceleration during this time interval will be 0.667 m/s^2
Question 2 (1 point)
An airplane travels east with a velocity of 100 m/s, but experiences a headwind that
is blowing west with a velocity of 15 m/s. What is the resultant velocity vector of
the airplane?
85 m/s East
2.
115 m/s East
115 m/s West
5
100 m/s East
Question 3 (1 point)
Saved
Answer:
I think it could be 85 m/s East but go for what you thought of because im not exactly sure.
Explanation:
If the forces on an object are not balanced than the object must be...
Explanation:
If the forces are not balanced on an object, the object experiences an overall net force. This will change the object's velocity.
Find the x- and y- components of a 20 N, 30o south of west vector.
Answer:
Explanation:
If a force of 20N is situated at 30° south west, the x and y component of the vector will be expressed as:
Fx = -Fcos 30° and Fy = -Fsin30°
They are but negative because the force acts in the third quadrant of a four cardinal point
Fx = -20cos30°
Fx = -20(√3/2)
Fx = -10√3N
Hence the -x component if the force is -10√3N
Fy = -20sin30°
Fy = -20(1/2)
Fy = -10N
Hence the y-component is the vector is -10N
what is the density of alcohol?
Answer:
789 kg/m³
Explanation:
Explanation:
The density of alcohol is 800 Kg/m^3 .
What is its average acceleration in this time
interval?
Answer:
Unlike acceleration, the average acceleration is calculated for a given interval. Here, Δ v is the change in velocity and Δ t is the total time over which the velocity is changing. If the velocity of a marble increases from 0 to 60 cm/s in 3 seconds, its average acceleration would be 20 .
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"
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.
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By the late 1800s, what type of evidence was being collected at crime scenes to help positively identify suspects by one particularly unique trait? Fingerprints Stolen goods DNA samples Photographs
Answer: hair
Explanation: Since a persons hair can be tracked back to their DNA this was often used because most of the criminals were female and all female have extremely long hair. Hair is also easy to find at a crime scene because the k9 dogs can easily smell it.
Answer:
The answer to this question would be fingerprints.
Explanation:
In the late 1800's Chinese organized a fingerprinting system and started using it to track down criminals
Name the two measurements that are represented on the ruler to the right?
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.
2. How far does a skateboarder travel in 22 s if his average velocity is 12.0 m/s?
Answer:264m
Explanation: 12 x 22= 264m
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 do you mean by force
Answer:
a force is a movement on a object such as kinetic energy
A -0.06 charge that moves downward is in a uniform electric field with a strengthened of 200 N/C. What is the magnitude and direction of the force on the charge
Answer:
The magnitude of the force is 12 N Upwards
Explanation:
The force on a positive charge will be in the same direction as the field, but the force on a negative charge will be in the opposite direction to the field. Thus the direction of the force is upward.
Given;
magnitude of charge, q = 0.06 C
magnitude of electric field, E = 200 N/C
The magnitude of the force is given by;
F = qE
F = 0.06 x 200 N/C
F = 12 N Upwards
Therefore, the magnitude of the force is 12 N Upwards
Answer:
A. 12N up
Explanation:
According to the dude above me
On a velocity time graph, what happens when the line crosses the x axis?
Answer:
the object is changing direction
Explanation:
During straight line motion, On a velocity vs. time graph, any time the line crosses the x axis, the object is changing direction
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.
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I am the particle that is so small that scientists treat me as though I have no mass. Scientists also figure that I probably spend most of my time in the cloud outside the nucleus. Give my name? can yall plz help me I'm in 8th grade and I need to know what this is because this is due tomorrow
Answer:
its electrons
Explanation:
only electrons stays outside the nucleus unlike protons and neutrons and it has little to no mass
