Answer:
D
closer to the moon than to Earth because Earth has greater mass than the moon
Explanation:
Answer:
D
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
everything in the universe is made up of what A.atoms B.minerals C.nitrogen
Answer: A) Atoms.
Explanation:
Answer:
a atoms
Explanation:
hey can you plz help me
Leo makes an electrical circuit using a battery, copper connecting wires, and a
lamps.
1 Sketch the assembly and say if the lamp lights up.
2 Specify the direction of movement of the free electrons.
3 Leo reverses the connections to the battery terminals. In which directions do the
free electrons.
Answer:
I can't do the sketch
the direction of elections would move though the wires opposite direction
the 3rd one I'm not sure
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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HELP PLEASE ASAP
A can of tuna, starting from rest, is dropped off a building. If it is only being pulled down by gravity (-
9.8 m/s2) and it hits the ground 3.2s later, how far (Ax) did it drop?
Answer: (displacement/delta x) = -50. m, and distance dropped = 50. m (50. m below the starting location)
Explanation:
We know that the initial velocity of the tuna can is 0 m/s, as it is at rest. Also, we have the acceleration caused by gravity (-9.8 m/s^2). The time for the trip is 3.2 s. We need to find the displacement, or delta x.
To do this, we need to use a freefall equation. The one we can use with initial velocity, time, and acceleration would be the following:
d = (initial velocity)(time) + (1/2)(acceleration caused by gravity)(time)^2
d = (vi)(t) + 1/2(g)(t)^2
d = (0 m/s)(3.2 s) + 1/2(-9.8 m/s^2)(3.2 s)^2
d = 1/2(-9.8 m/s^2)(3.2 s)^2
d = -4.9(3.2)^2
d = -4.9(10.24)
d = -50.176 = -50. m
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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when the body is moving with constant velocity it's acceleration is
Answer:
Zero
Explanation:
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.
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.......Look at pic attached
Answer:
d=75 m
Explanation:
The horizontal launching speed is, v = 30 m/s
The vertical distance above the ground is= h m
The time of flight t= 2.5 s
The formula for free fall to apply here is:
h=1/2 *g * t² where g is acceleration due to gravity = -9.8 m/s² and t=2.5 s
Finding h, as ;
h= 1/2 * -9.8 * 2.5² = 30.63 m
Applying the formula for range (distance d)
R= v * t
R= 30 *2.5 =75 m
The range is 75 meters.
What does it mean to say that mass is conserved during a physical change?
Answer:
Alright, so mass is a property of a physical body. During physical changes, such as acceleration, force, etc, the mass stays the same since we are not affecting its physical shape, just where it is physics wise. So yeah mass is conserved during a physical change.
Explanation:
Hopefully this helped, if not HMU and I will get u a better answer
-have a great day! :)
In a physical change the mass remains the same before and after the process, then it is said as the mass is conserved and mass is only conserved in the isolated system.
What is the law of Conservation of Mass?A system that is isolated from its environment is one that does not communicate with it. As a result, no matter what changes or chemical reactions take place in that isolated system, the mass will remain constant; even if the final state may differ from the initial state, there can be no more or less mass than there was before the change or reaction.
The understanding that substances do not actually vanish as a result of a reaction, despite what might appear to be the case, but rather change into another material of equal mass, was made possible by the law of conservation of mass, which was essential to the development of chemistry.
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PLZZ ANSWER THE QUESTION
PLEASE HELPPP MEEEE!!!!!
Which of the following statments are true?
a
an object’s average velocity and average speed will not always be the same
b
If the object changes direction, then the distance traveled and the displacement will be different
c
If these two values are different, then speed and velocity will also differ.
d
none of the above
Answer:
A, B, C
Explanation:
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:
I just now luv
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
Physics , help please
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
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.
7. Two bikes travelling in the same direction move at a speed of 30 km/hr. The bikes are separated by a distance of 5 km. What would the speed of the car travelling in the opposite direction be if it meets these bikes at an interval of 4 minutes?
Answer:
Explanation:
Call the bike on the right A
Call the bike on the left B
The car begins it's time when it passes A
4 minutes later, it passes B.
But B has moved in 4 minutes and that is the key to the problem.
How far has B moved.
t = 4 minutes = 4/60 hours = 1/15 of an hour.
d = ?
rate = 30 km / hr
d = r * t
d = 30 km/hr * 1/15 hours = 2 km
The distance between the bikes is 5 km.
So the car has traveled 5 - 2 = 3 km
d = 3 km
r = ?
t = 4 minutes = 1/15 hour
r = d/t = 3/(1/15)= 3 / 0.066666666 = 45 km/hr.
PLEASE HELP MEE 15 POINTS
the model represents a(n)
A. Compound
B. Mixture
C. Element
D. Electrons
The model represents a compound, therefore the correct answer is option A.
What is a Chemical compound?
A chemical compound is a combination of two or more either similar or dissimilar chemical elements.
For example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.
A single carbon atom is covalently joined to two oxygen atoms to form the chemical molecule known as carbon dioxide or CO2.
Animals exhale it, and plants use it in the process of photosynthesis. Under normal conditions of pressure and temperature, carbon dioxide, or CO2, is a gas.
Thus, the model represents a compound, therefore the correct answer is option A.
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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]
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
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:
Amanda selects a sample of college students. She obtains the students' scores on several personality scales, as well as on a test of creativity. Amanda wishes to summarize her sample's performance on the creativity test. She therefore uses _____ statistics to present raw data.
Answer:
descriptive
Explanation:
In this scenario, Amanda would use descriptive statistics in order to present the raw data. That is because, this type of statistic fulfills her goal of summarizing the raw data, while still providing clear and accurate quantitative analysis regarding the different features of the study through the different tests done. Including the personality scales and creativity test data. Since this provides such information it would best fit the goal of what Amanda is trying to accomplish.
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.
state 3 types of forces that act between object that are not in contact
magnetic force
gravitational force
electrostatic force
ILL GIVE YOU BRANLEAST
Select the correct answer
Enca throws a terwis ball against a wall, and it bourses back. Which force is responsible for sending the ball back to Erica
Oh the force that the balleverts on the wall
OB, the frictional for between the wall and the ball
C, the acceleration of the ball as it approaches the wall
the normal force that the wall events on the ball
Reset
Ner
I believe it's C. The acceleration of the ball as it approaches the wall.
Answer:
the acceleration of the ball as it approaches the wall :))
Explanation:
hope this helps!
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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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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What is the Morgan-Keenan Spectral Classification system?
A method of classifying stars by their temperatures and compositions.
A method of classifying stars by their distance from the Sun.
A method of classifying stars by their age.
A method of classifying stars by their age and distance from the Earth.
Answer: A method of classifying stars by their temperatures and compositions.
Explanation:
The Morgan-Keenan Spectral Classification system is a method of classifying stars by their temperatures and compositions.
What is Morgan-Keenan Spectral classification of star?The primary factor used to categories stars is their temperature.
The Morgan-Keenan luminosity class (MK or MKK) was developed as a result of the Harvard spectral classification classification scheme does not completely describe the star as it cannot distinguish between stars with the same temperature but different luminosities.
Since then, class I stars have been separated into Ia-O, Ia, and Ib, and classes VI (sub-dwarf), and D (white dwarf) have been added, replacing the original roman numerals between I (supergiant star) and V (main sequence).
The original Harvard classification of the star is supplemented by the MK luminosity class in order to fully define it. For instance, the entire classification of the Sun, which is a main sequence G2 star, is G2V.
The MK luminosity class is added to the Harvard classification of the star in order to fully define it.
A method of classifying stars by their temperatures and compositions is applied in Morgan-Keenan Spectral Classification system.
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