Answer:
B: C + O2 = CO2
Explanation:
In Chemistry,a synthesis reaction is one that occurs when two or more reactants combine in such a manner that they form a single product.
Looking at the options, the only one where 2 reactants combine to form a single product is option C where Carbon reacts with Oxygen to form carbon (IV) oxide.
What would the final volume of 40 L of gas at 80 pascals be if the pressure increases to 130 pascals?
Answer:
Final volume, V2 = 24.62 L
Explanation:
Given the following data;
Initial volume = 40 L
Initial pressure = 80 Pa
Final pressure = 130 Pa
To find the final volume V2, we would use Boyles' law.
Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.
Mathematically, Boyles law is given by;
[tex] PV = K[/tex]
[tex] P_{1}V_{1} = P_{2}V_{2} [/tex]
Substituting into the equation, we have;
[tex] 80 * 40 = 130V_{2} [/tex]
[tex] 3200 = 130V_{2} [/tex]
[tex] V_{2} = \frac {3200}{130}[/tex]
[tex] V_{2} = 24.62 [/tex]
Final volume, V2 = 24.62 Liters
39. A dog runs on a waxed floor at an initial speed of 2 m/s. It slides to a stop with an
acceleration of -0.43 m/s2. How long does it take for the dog to stop?
Answer:
Explanation:
Use the one-dimensional equation
[tex]v_f=v_0+at[/tex] where vf is the final velocity of the dog, v0 is the initial velocity of the dog, a is the acceleration of the dog, and t is the time it takesto reach that final velocity. For us:
0 = 2 + -.43t and
-2 = -.43t so
t = 4.7 seconds
Write your answers to these questions. • Does the cardboard fall off? • Does the water pour out? • Something is pushing against the cardboard to hold the water in. What do you think it is?
Answer:
Have you ever tried turning a glass of water upside down without spilling it? It seems impossible! Both kids and adults will be amazed by this experiment that appears to defy gravity.
With just a few simple household items, you can try this simple and fun science experiment where kids can get see the effects of air pressure in action. Printable instructions, a demonstration video, and an easy to understand explanation of how it works are included below.
Helpful Tip: Be sure to try this experiment over a sink or large container lest you accidentally make a BIG wet mess!
How do sports play a role in American Culture? Is this different from how sports play a role in other cultures?
PLEASE ANSWER QUICKLY!!!
Answer: American sports culture has a much greater appreciation of and emphasis towards collegiate and high school sports. This may be the strongest difference between American sports culture and every other countries' sports culture.
In space, are fires possible without oxygen? If so how would it happen?
Answer:
no
Explanation:
it just doesn't work that way, try to search the fire pyramid on G. O. O. G. L. E. and you'll see why
Why are earths rocks generally younger than earth itself.
Answer:
The reason why the rocks are more younger than Eart itself is because they come from processes like plate tectonics, volcanoes, and erosions that made up Earth's surface.
Answer:
The lack of impact craters and the age of most rocks on Earth in comparison to other bodies in the solar system can be attributed to processes such as volcanism, plate tectonics, and erosion that have reshaped Earth's surface, and this is why most of Earth's rocks are much younger than the Earth itself.
An eccentric inventor attempts to levitate by first placing a large negative charge on himself and then putting a large positive charge on the ceiling of his workshop. Instead, while attempting to place a large negative charge on himself, his clothes fly off. Explain.
Answer:
shirt is little attached to the body, it can come off and fly away
Explanation:
In electrostatics, charges of different signs attract and charges of the same sign repel.
In this case, when a negative charge is placed on it, both the inventor and the shirt are charged, therefore there is a repulsive force, also there is an attraction between the positive charge of the roof attracts the negative charge, such as the shirt. of weak the two forces not greater than the resistance of the walk.
As the shirt is little attached to the body, it can come off and fly away
Blank is the time rate of change in velocity
Acceleration is the time rate of change in velocity.
Acceleration = Rate of change of velocity
People move into and begin living in an area that previously
had no human activity. What will most likely be the effect on
the amount of water?
A Water will be more evenly distributed in the area
B Most of the fresh water in the area will be converted to
salt water
C The amount of fresh water suitable for drinking will
increase
D There will be less available for other living things
Group of answer choices
c
D) There will be less available for other living things.
There will be less available for other living things is the most likely effect on the amount of water and is denoted as option D.
What is Water?
This is a compound which is regarded as a universal solvent and can be found in rivers, streams etc.
People moving into and living in the area means water will be used which will make it less available for other living things.
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which situation results in the least attraction between two magnets?
Answer:
The south pole of one magnet is near the south pole of the other
magnet.
If the speed of the wave along the rope is 3.2 m/s. Calculate the frequency of the wave
Answer:
2Hz
Explanation:
Find the diagram attached
Using the formula;
v = fλ
v is the velocity
f is the frequency
λ is the wavelength
Given the following
v = 3.2m/s
λ = 4.8/3 = 1.6m
Get the frequency
f = v/λ
f = 3.2/1.6
f = 2Hertz
Hence the frequency of the wave is 2Hz
The frequency of the wave is equal to 2.0 Hertz.
Given the following data:
Speed of wave = 3.2 m/s. Distance = 4.8 meters.To calculate the frequency of the wave:
How to calculate frequency.First of all, we would determine the wavelength of the wave in the image attached below:
Note: Wavelength is the successive distance between two (2) crests.
[tex]Wavelength = \frac{distance}{3} \\\\Wavelength = \frac{4.8}{3}[/tex]
Wavelength = 1.6 meter.
Mathematically, frequency is given by this formula:
[tex]Frequency = \frac{velocity}{wavelength} \\\\[/tex]
Substituting the given parameters into the formula, we have;
[tex]Frequency = \frac{3.2}{1.6}[/tex]
Frequency = 2.0 Hertz.
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What is the name for forces that act on an object and cancel each other out causing the object to be at rest?
Answer:
If an object is at rest, then the forces acting on both sides are equal and there is resultant force is 0.
the weight of the buggy was 105N on earth And 40N on mars. Why was the weight of the buggy less on mars than earth?
Answer: The gravity on Mars is considerably less than it is on Earth, so while the buggy still has the same physical mass, its relative weigh it considerably less.
what is the x component that of a vector that is defined 2.5m at 64 degree?
A) -2.2m
B) 1.1m
C) 2.2m
D) -1.1m
Answer:
Explanation:
This is a displacement vector since it is given in terms of a distance (meters, to be specific). The way you find the x-component is:
[tex]V_x=Vcos\theta[/tex] which means you multiply the magnitude (length) of the vector times the cos of the direction (the angle):
[tex]V_x=2.5cos(64)[/tex] to get
1.1 m, choice B.
Which statements below are true? Check all that apply. A. If motion starts and stops at the same location, then the displacement is zero. B. Distance measurements must include magnitude, unit, and direction. I c. Distance is always greater than or equal to the magnitude of the displacement D. Displacement can be fully described with a magnitude and a unit.
Answer:
A. If motion starts and stop at the same location, then the displacement is zero
C. Distance is always greater than or equal to the magnitude of the displacement
Explanation:
The displacement of a body is a vector quantity that gives the shortest (straight line) distance moved by an object in motion, from its initial position to its final position. The displacement can also be described as the final position relative to the initial position of an object, such that the displacement vector, 's', is given as follows;
[tex]s = x_f - x _i[/tex]
The displacement gives the direct length between two points, with regards to the direction of motion between the points. It can only be described by both the magnitude and the direction
Therefore, displacement can be positive (forward motion), negative (backward motion), or zero (where there is motion that stops at the starting point)
Therefore, a correct options is; If motion starts and stop at the same location, then the displacement is zero
Displacement, being a vector quantity will have both magnitude and direction
Distance, however, is a scalar quantity, it specifies only magnitude, but does not specify direction
Distance, describes the length of the path taken from one point to the other. Distance gives the total movement a body makes, without regards to the direction of the motion
Therefore, distance is always positive or zero (here only the object is stationary)
Therefore, a correct option is; Distance is always greater than or equal to the magnitude of the displacement
Therefore, the correct options are;
If motion starts and stop at the same location, then the displacement is zero
Which of these is true of all simple machines?
A.Input force is always less than output force.
B.Work input is always greater than work output.
C.Work output is always greater than work input.
D.Output force is always less than input force.
is the Matter is made up of motionless particles.
Answer:
All matter is made up of atoms.
Which term describes an area of low density in a longitudinal wave?
A. Crest
B. Compression
C. Rarefaction
D. Trough
Answer: rarefaction
Explanation: correct answer on a p e x
Rarefaction term describes an area of low density in a longitudinal wave.
What is wave ?Wave is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.
Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.
There are two types of the wave longitudinal wave and transverse wave. Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave. Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a transverse in nature wave.
In Longitudinal wave, wave carries energy and momentum with compression and rarefaction. Compression is region of high density, in this region particles of the medium is compressed. rarefaction is region of expansion and it is low density region of longitudinal wave.
Hence option C is correct.
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The base for hair follicles is in the _____.
epidermis
fatty layer
dermis
dentin
Answer:
dermis
Explanation:
epidermis
dermis
hypodermis
For each statement in the rows, select the most suitable option (words) in the columns. One selection for each row.
Series Circuits. Parallel Circuits. Series and parallel circuit.
The total voltage across
each component is the
same as the total voltage
being supplied to the circuit .
The Current is the equal at
all parts of the circuits.
Total current is divided among all
the components in the circuits.
The voltage is divided into all the
components in the circuits.
Answer:
the answer is most likely likely to be 2
An engine has an imput of 100 j and gives out 27 j of useful kenetic energy what is the efficiency of the engine
Answer:
Based on what we have learned so far, in what ways have the experiences of Asian-Canadians stayed the same over time? Why do you think these similarities exist? Please give specific examples to support your ideas.
Explanation:
What is the capacitance of a capacitor that has 7.9 x 107 C of charge and a potential
difference of 12.0 V?
Answer:
6.58×10⁶ F
Explanation:
Applying,
Q = CV..................... Equation 1
Where Q = charge of the capacitor, C = Capacitance of the capacitor, V = Volatage
Make C the subject of the equation
C = Q/V................. Equation 2
From the question,
Given: Q = 7.9×10⁷ C, V = 12.0 V
Susbtitute these values into equation 2
C = 7.9×10⁷/12
C = 6.58×10⁶ F
38. Joey set a school record for running the 200 m race. He completed the distance in
20.6s. What was his average speed?
Answer:
9.7 miles per second
Explanation:
divide 200 by 20.6
1) Complète les phrases suivantes en remplaçant
chaque numéro par le mot convenable:
• Pour l'oeil 1, l'image est formée en avant de la
rétine, car l'oeil est trop long.
• Pour l'oeil 2, l'image est formée derrière la
rétine, car l'oeil est plus court.
2) Trouve la place de la lentille convergente, ainsi
que les 2 foyers principaux (F) et (F').
Answer:
si?
Explanation:
definition La myopie. L'oeil myope est trop long ou le cristallin trop convergent. L'image d'un objet à l'infini se forme en avant de la rétine. Le punctum remotum est ... i dont know sorry
A spring extends by 10cm when a mass of 100g is attached to it. What is the spring constant?
Answer:
10N/m
Explanation:
Using F=kx
F=mg
k=mg/x
k=0.1*10/0.1 (kg*m/s^2)/m
10N/m
What kind of proof is required when disproving old ideas?
A.
Experimental evidence that supports the new idea
B.
Survey results that show popular support for the new idea
C.
Peer review that does not support the new idea
D.
A well-stated hypothesis that shows the new idea can be tested
Experimental evidence that supports the new idea
what happens to the particles in a substance when temperature rises
Answer:
They gain kinetic energy
Explanation:
When the temperature of the particles in a substance rise, its internal energy increases. This internal energy is thus translated to kinetic energy of the particles in the substance. If the substance is a solid, as the kinetic energy increases, the vibrations of the particles of the substance increases causing it to undergo a change of state to liquid when the temperature reaches its melting point.
This change of state also occurs from the liquid state to the gaseous state as the internal energy of the substance, and thus the kinetic energy of the particles increase when the temperature reaches the substance's boiling point.
So, as the temperature of a substance rises, the particles of the substance gain kinetic energy.
which phrase best descirbes how scientists use the data they collect
Answer:
Please give the context of questions
Explanation:
It really helps people answer your questions. thanks
How many dots belong in the electron dot diagram of a boron (B) atom?
three
five
eight
thirteen. pls let me know I have been working on this for 9 hours
The answer is five dots.
sorry i meant three dots not five
Jeremy is pushing his two children on a set of swings. He gives his daughter a push and she swings
Jeremy gives his son the same push, but he only swings about two feet high. What could account f
the kids got?
Jeremy's daughter has more mass, so it takes less force to get her into the air.
Jeremy's son has more mass, so it would take more force to reach the same height as his da
O
Jeremy's son has less mass, so it would take more force to reach the same height as his da
O
Jeremy's daughter has more mass, so she accelerates faster than his son.
