Answer:
Average velocity = 0.83 m/s
Explanation:
Computation:
Total displacement = 20 - 10 = 10 m
Time taken = 12 second
Average velocity = Total displacement / Time taken
Average velocity = 10 /12
Average velocity = 0.83 m/s
Answer:
Velocity: -0.83
Average speed: 2.5
An object has positive velocity and negative acceleration, what does this mean?
(1 Point)
The object is accelerating backwards.
The object is backing up but slowing down.
The object is moving forward but slowing down.
The object has a constant velocity backing up.
Answer:
the object is moving forward but it is slowing down
Explanation:
negative acceleration becomes when the intiall velocity becomes greater than the final which means if it is initially greater but finally smaller that means it is slowing down but moving forward
hope it helps
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PLZZ ANSWER THE QUESTION
How are mass and weight different?
(A) Weight is the amount of matter and mass is the effect of gravity on weight.
(B) Weight is the space an object takes up and mass is the effect of gravity on mass.
(C) Mass is the space an object takes up and weight is the effect of gravity on mass.
(D) Mass is the amount of matter and weight is the effect of gravity on mass.
Answer:
D
Explanation:
D, Mass is the amount of matter in an object, it is measured in kg and does not change with gravity. Weight is the effect of gravity on mass, it is measured in Newtons (as it is a force) and changes with gravity. E.g. If you went to the moon your weight would change due to the change in gravity but your mass would stay the same.
Hope this helped!
what are two benefits of scientists using a diagram to model the water cycle A It can Show changes that Occur in many Diffrent parts of Earth at The Same Time . B It can Be Used to Show How the parts of the cycle relate to One Another. C Only a Few Factors In The Water Cycle can be shown on the Diagram .D It can be used to show as much detail as is Present in The actual Water Cycle.
Answer:
right ones are. It can show changes that occur in many different parts of the Earth at the same time, and It can be used to show how the parts of the cycle relate to one another.
Explanation:
I just did it on Apex, hope this helps!!
The two main benefits which the scientists have using a diagram to model the water cycle are it can show changes that occur in many different parts of the Earth at the same time and it can also be used to show how the parts of the cycle relate to one another. Thus, the correct options are A and B.
What is the Water cycle?The water cycle is a type of biogeochemical cycle which shows the continuous movement of the water molecule in different states within the Earth and the atmosphere.
Water cycle is a complex system which includes many different processes. This includes the liquid water which evaporates into the form of water vapor in the atmosphere, the vapor undergoes condensation to form clouds, and these clouds precipitate back to the earth in the form of rain and snow.
The benefits of using a diagram to model the water cycle includes showing all the changes that occur in many different parts of the Earth at the same time and it can also be used to show how the parts of the cycle relate to one another.
Therefore, the correct options are A and B.
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Listed in the Item Bank are some important labels for sections of the image below. To find out more information about labels, some have more details available when you click on them. Drag and drop each label to the corresponding area it identifies in the image.
ITEM BANK: Move to Bottom
BoilingGas/VaporLiquidMeltingSolidTemperatureTime
0
Answer:reactant,active site,enzyme below,substrate,products
Explanation:
A car accelerates uniformly in a straight line from rest at the rate of 3.7 m/s2
What is the speed of the car after it has traveled 63 m? Answer in units of m/s.
How long does it take the car to travel 63 m? Answer in units of s
Explanation:
Using equations of motion :
(A) we know that,
u = 0
a = 3.7 m/s^2
S = 63
[tex] {v}^{2} = {u}^{2} + 2as[/tex]
[tex]v = \sqrt{0 + 2 \times 3.7 \times 63} = 21.6 \: m{s}^{ - 1} [/tex]
(B)
v = u + at
21.6 = 0 + 3.7 * t
t (time to reach 63 m) = 5.83 seconds
What role does the entrepreneur play in the market economy
Answer:
entrepreneur:
noun
a person who organizes and operates a business or businesses, taking on greater than normal financial risks in order to do so.
hope this helps :)
Which of the following is responsible for regulating noise pollution?
A.
state and local authorities
B.
Environmental Protection Agency
C.
US Congress
D.
US Department of the Interior
Please select the best answer from the choices provided.
us Congress it could have
Answer:
Its A
Explanation:
a person suffering from major depression
A. Has frequent flashbacks
B. Feel discouraged about life and often has little energy
C. Has sudden attacks of anxiety
D. Feels anxious all of the time
Answer B
Explanation:
You are depressed if you are discouraged by life
Answer:
I*B. Feel discouraged about life and often has little energy* ( most likely answer)
*or C. Has sudden attacks of anxiety*
Explanation:
In my opinion I think the answer is *B. Feel discouraged about life and often has little energy* because I have experienced some depression in my life and I also know some people who have major depression and this is what its like ( the answer could also be c)
Why are understandings of patterns so important to human development?
Answer:
Understanding patterns is important for human development because it allows us humans to make more Educated guesses in life. It allows the human brain to strengthen its logical thinking.
Explanation:
For example: A baby will occasionally learn to roll over or crawl through time. The pattern of doing such things allows the baby to learn more from its actions to make new ones.
I hope this helped im new but want to help :)
A car starts from rest and travels 25 m in 5 seconds at constant velocity. It then reverses 5 m in 10 seconds at constant velocity. The car then sits at rest for 5 seconds before it reverses at constant velocity back to where it started in 10 seconds time. Draw a position time graph that demonstrates the motion of the car.
Answer:
the car is going to same sped !
Explanation:
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if an atom of Oxygen loses a proton, is it still Oxygen?
No.
The number of protons in the nucleus of an atom is the thing that uniquely determines what element the atom belongs to.
If the atom has 8 protons in its nucleus, then it's an atom of Oxygen.
If the atom has 7 protons in its nucleus, then it's an atom of Nitrogen.
A soccer ball rolls across a field with
an initial velocity of 14.9. Due to friction, it slows down at a rate of .5 until eventually coming to a stop. How far did it roll AND how long did it take to get there?
Answer:
The value is [tex]s = 222.01 \ m[/tex]
Explanation:
From the question we are told that
The initial velocity is [tex]u = 14.9 \ m/s[/tex]
The deceleration is [tex]a = - 0.5[/tex]
Generally from kinematic equations we have that
[tex]v^2 = u^2 + 2as[/tex]
Here v is 0 m/s because the velocity of the ball when at rest is zero so
[tex]0^2 = 14.9^2 + 2 (-0.5)s[/tex]
=> [tex]s = \frac{222.01}{1}[/tex]
=> [tex]s = 222.01 \ m[/tex]
Analyzing a blood sample usually involves which type of separation method?
Answer:(D.)
Explanation:
What are the three main types of magma and how do they differ from each other?
Answer:
There are three basic types of magma: basaltic, andesitic, and rhyolitic, each of which has a different mineral composition. All types of magma have a significant percentage of silicon dioxide. Basaltic magma is high in iron, magnesium, and calcium but low in potassium and sodium.
make me as brilliest and follow me first.......How is retrograde motion different from normal diurnal motion
Answer:
Diurnal motion, apparent daily motion of the heavens from east to west in which celestial objects seem to rise and set, a phenomenon that results from the Earth's rotation from west to east. The axis of this apparent motion coincides with the Earth's axis of rotation. Retrograde motion is an APPARENT change in the movement of the planet through the sky. It is not REAL in that the planet does not physically start moving backwards in its orbit. It just appears to do so because of the relative positions of the planet and Earth and how they are moving around the Sun.
A golf ball is projected at an angle of 30 degrees to the ground. If velocity of the object is 20 m/s, calculate the horizontal component of this velocity
Answer: 17.3
Explanation:
The horizontal component of the velocity of the projectile is equal to 17.32 m/s.
What is projectile motion?
A projectile is an object that is in flight after being projected. The acceleration acting is in the vertical direction which is due to gravity (g) in a projectile motion. Therefore, equations of motion can be applied separately on X-axis and Y-axis to find the parameters.
If any object is projected with the velocity v, making an angle θ (theta) from horizontal. Then the horizontal component of the initial velocity will be equal to v cosθ.
The vertical component of initial velocity is v sinθ. The horizontal component of velocity remains the same as no acceleration is acting horizontally during the entire motion of a projectile.
Given, the angle of the projectile with the ground, θ = 30°
The initial velocity of the projectile, v = 20 m/s
The horizontal component of this velocity, = v cosθ = 20 × cos30°
= 20 × 0.866
= 17.32 m/s
Therefore, the horizontal component of this velocity is 17.32 m/s.
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when the body is moving with constant velocity it's acceleration is
Answer:
Zero
Explanation:
A boat heads directly eastward across a pier at 12 meters per second. If the current in the river is flowing
at 5.0 meters per second due south, what is the magnitude of the boat's resultant velocity
Answer: 13 m/s
Explanation: The two vectors form a 5-12-13 right triangle. the magnitude of their resultant is the hypotenuse, which is 13 m/s.
The magnitude of the boat's resultant velocity (V) is 13 meters per second.
The velocity (v₁) of the boat heading in the eastward direction is in +ve (x-direction).
The velocity (v₂) of the current flowing in the south direction is in -ve (y-direction).
The magnitude of the boat's resultant velocity (V) can be determined by using the Pythagoras' rule:
∴
V² = V₁² + V₂²
V² = (12 m/s)² + (-5.0 m/s)²
[tex]\mathbf{V = \sqrt{(12 m/s)^2 + (-5.0 m/s)^2}}[/tex]
[tex]\mathbf{V = \sqrt{(144 m/s) + (25m/s)}}[/tex]
[tex]\mathbf{V = \sqrt{(169 \ m/s) )}}[/tex]
V = 13 m/s
Therefore, we can conclude that the magnitude of the boat's resultant velocity (V) is 13 meters per second.
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state 3 types of forces that act between object that are not in contact
magnetic force
gravitational force
electrostatic force
The use of seat belts in cars has significantly reduced the number of crash
fatalities. Which statement best explains how the market forces of supply
and demand guided the development of seat-belt technology?
Answer: consumers' desire for more comfortable seatbelts led engineers to improve seat belts.
Explanation:
A long wire of diameter D= 1 mm is submerged in an oil bath of temperature [infinity] T[infinity]= 15°C. The wire has an electrical resistance per unit length of Re′= 0.01 Ω/m. If a current of I= 96 A flows through the wire and the convection coefficient is h= 500 W/m2·K, what is the steady-state temperature of the wire? From the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°C of the steady-state value? The properties of the wire are rho= 8000 kg/m3, c= 500 J/kg·K, and k= 20 W/m·K.
Answer:
a) what is the steady-state temperature of the wire?
83.67°C
b) From the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°C of the steady-state value?
8.31s
Explanation:
a) what is the steady-state temperature of the wire?
From the above question we are given the following values:
Oil bath temperature = 15°C.
Diameter of wire = 1mm
Converting to m(meter)
1 mm = 0.001m
The wire has an electrical resistance per unit length of Re′= 0.01 Ω/m. Current of I= 96 A
Convection coefficient is h= 500 W/m²·K,
Temperature in steady state formula =
Temperature + I² × Re' /π × D × h
= 25°C + 96² × 0.01/π × 0.001 × 500
= 25°C + 92.16/1.5707963268
= 25°C + 58.670878232
= 83.670878232°C
≈ 83.67°C
b)From the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°C of the steady-state value?
For question b, we are given the following values
rho= 8000 kg/m3, c= 500 J/kg·K, and k= 20 W/m·K
Formula
= Exp( -4 × h/rho × c × k)
=Exp(- 4 × 500 W/m²·K)/8000 kg/m³ ×
500 J/kg·K × 20 W/m·K
= 8.31s
eventually sarah reaches the end trafic and is able to drive the speed limit again will this change her velocity
Answer:
yes
Explanation:
This will change cause of the increase in her speed.
what happens to molecules when a liquid chnages to solid
How would a chart of mid-17th century religious beliefs differ from this chart?
Fewer people would believe in a single God because most people believed in multiple gods.
Fewer people would identify as atheist because people who did not identify with the official religion did not say so out loud.
More people would list their religion as unknown because there were no strong religious entities during this era.
More people would believe in a spirit or life force because such beliefs were encouraged during this era.
Answer:
The correct answer is B) Fewer people would identify as an atheist because people were not willing to share alternative religious beliefs publically.
Explanation:
A chart of mid-17th-century religious beliefs differs from this chart in that Fewer people would identify as an atheist because people were not willing to share alternative religious beliefs publically.
In the 1600s, people did not have total freedom of speech if they had any. The church had a tremendous influence in the life of people and religious beliefs defined societies and families. The Church exerted its power and influence in many aspects of the people's lives and something out of the purview of the church or different to the religious beliefs of the Church was considered to be sacrilegious. The Church prosecuted people for being against the Church, so people of that time preferred to say that they were religious people supporting the church. Being an atheist was not really an option in the 17th century.
Hope this helps!!
Answer: The first one
Fewer people would identify as atheist because people who did not identify with the official religion did not say so out loud.
Explanation:
is 35 k/m a velocity?
Answer:
No
Explanation:
the unit of velocity is m/s and the velocity is written as 35m/s not 35 k/m
What is the mass of the object being measured?
A triple beam balance is shown. The first slider is at the 70 gram mark. The second slider is at the 300 gram mark. The third slider is at the 5 gram mark.
Answer:
m = 375 [gram]
Explanation:
A triple Beam balance is an instrument very easy to use, since we only have to perform the arithmetic sum of each of the weights that are recorded in each beam
m = 300 + 70 + 5 = 375 [gram]
For a better understanding, the following image is attached, with values on each beam, which should be read.
The largest mass is in the indicator of 100 [gram], the second mass is in the indicator of 20 [gram] and the third is in the indicator of 5.8 [gram]. Thus the arithmetic sum corresponds to:
M= 100 + 20 + 5.8 = 125.8 [gram]
Note: it is important that when the instrument is in balance, the opposite end of the beam should indicate a position of zeros.
So I have to write a motion story for physics. For the assignments you need to have:
• constant velocity
• speeding up while moving forward
• speeding up while moving backward
• object at rest
• slowing down while moving forward
That’s my story in the picture that I wrote, I just need a confirmation if the m/s and seconds are correct and the story itself is correct.
(I’ll try my best to give a brainliest if I find out how to)
Thank you!
Answer:
,
Explanation:
Answer:
Is
• speeding up while moving forward
) When coal is burned completely into carbon dioxide and other gases, the total
amount of matter of the gases _____.
Answer:
This question is incomplete
Explanation:
This question is incomplete. The process described in the question is combustion; where a substance burns completely in excess oxygen to produce mainly carbon dioxide and then other gases. There is no chemical equation for this particular combustion reaction because coal is a mixture.
However, the amount of the matter of the gases produced from this combustion must be equal to the total number/amount of matter that constitutes the coal because of the law of conservation of matter that states matter can neither be created nor destroyed.
How are stars formed and classified?
