Answer:
416.667 m/s
Explanation:
divide the distance by the time
A 3.0-kg mass is moved at a constant speed by a force of 6.0 N. What is the change in the kinetic energy of the mass as it moves over a distance of 4.0 m in the direction of the force
Answer:
The change in kinetic energy is zero (0).
Explanation:
Given;
mass of the object, m = 3.0 kg
applied force, f = 6 N
distance through the object is moved, d = 4.0 m
The acceleration of the object is calculated as;
f = ma
a = f / m
a = (6) / 3
a = 2 m/s²
The constant speed through which this object is moved is calculated as;
v² = u² + 2ad
v² = 0 + 2 (2)(4)
v² = 16
v = √16
v = 4 m/s
The change in kinetic energy is calculated as;
ΔK.E = K.E(final) - K.E(initial)
ΔK.E = ¹/₂mv₂² - ¹/₂mv₁²
v₂ = v₁ = v (since the mass was moved at a constant speed; v)
ΔK.E = ¹/₂mv² - ¹/₂mv²
ΔK.E = 0
Therefore, the change in kinetic energy is zero (0).
What's 3,278,000 as scientific notation ?
Answer:
[tex] 3.278 \times {10}^{6} [/tex]
is love really a feeling or is it just mental?
Answer:
i really don't know anything about love ,because i have never experienced this .but love is just a person feeling and emotion about someone ,that we name as love.
Explanation:
How did Hypatia contribute to the study of philosophy? She became a teacher at Alexandria. She improved upon the works of Plato. She was educated in both science and mathematics. She studied Euclid’s theories and proved them incorrect.
Answer:
she improved upon the works of plato
Answer: A she became a teacher at Alexandria
Explanation:
what is the avarage speed during kick 1
Where could we use a light bulb that has 12V written on it
Answer:
Explanation:
In a battery charger (for an auto).
As a replacement for any bulb in an auto.
As a lamp in an emergency exit where the power must be shut off.
As a light that illuminates the back of a truck, turned on when loading the truck.
Please help me with this.
Question 7 of 10 What causes magnetic domains? O A. Magnetic poles of magnets attracting each other O B. Electricity moving through iron O C. Magnetic fields of atoms aligning D. Iron being placed near a magnet.
Answer:
C. Magnetic fields of atoms aligning
Answer:
c
Explanation:
a pex
A beam of red light and a beam of violet light each deliver the same power on a surface. For which beam is the number of photons hitting the surface per second the greatest
Options are;
(a) the red beam
(b) the violet beam
(c) it is the same for both beams
(d) cannot answer this without knowing the light intensity
Answer:
A: Red Beam
Explanation:
The energy of a photon is given by the formula;
E = hc/λ
Where;
h is Planck's constant
c is speed of light
λ is wavelength
From online sources, wavelength of red light is greater than that of violet.
Thus, it means that the value of E for red light will be lesser than that of violet since the denominator under red light will be larger. Therefore, the beam of red light will have the greatest number of photons hitting the surface per second.
The Planck's equation and the definition of power allow you to find the result for which beam has the largest number of photons is:
The red beam has more photons than the violet beam.
The energy of a photon is given by the Planck's equation.
E = h f
Where h is the Planck constant and f the frequency.
The speed of light is related to wavelength and frequency.
c = λ f
f = [tex]\frac{c}{\lambda }[/tex]
Let's substitute
E = [tex]\frac{hc}{\lambda}[/tex]
Power is defined as energy per unit of time.
P = W / t
P t = W
The wavelength of red light, in the order of 700 nm, is greater than the wavelength of violet light, which is on the order of 400 nm, therefore the energy of a photon of red light is less than the energy of a photon of violet light.
[tex]E_{red} < E_{violet}[/tex]
The total energy deposited is the number of photons times the energy of each photons.
W = [tex]#_{photons} \ E_o[/tex]
They indicate that the power delivered by the two rays is the same.
[tex]P_{red} = P_{violet}[/tex]
#_ {red photons} [tex]E_{o \ red}[/tex]d = #_{photons violet} [tex]E_{o \ violet}[/tex]
[tex]number_{red \ photons} = \frac{E_{violet}}{E_{red}} \ number _{violet \ photons}[/tex]
The amount of energy of the violet photons is greater than the amount of energy of the red photons.
[tex]\frac{E_{violet}}{E_{red}} > 1[/tex]
Consequently, to leave the same power, there must be more red photons than violet wavelength photons.
In conclusion, using Planck's equation and the definition of power, we can find the result for which beam has the greatest number of photons is:
The red beam has more photons than the violet beam.
Learn more here: brainly.com/question/5528489
Scientists are studying a moving glacier. To monitor the flow of the glacier, they place a series of five markers, A, B, C, D, and E, in a straight line across the path of flow. A and E are closest to the edges of the glacier. C is in the center of the glacier. B and D are between A and C and C and E respectively. How would the scientists predict the motion of each of the markers relative to the edges of the valley down which the glacier flows? What pattern would they predict in the markers over time?
Answer: c a d b
Explanation:
Glaciologists use Glen–Nye Flow Law, to predict the movements of glaciers thus, The pattern they predict in the markers over time would be C D A B.
How would the scientists predict the moving glacier of the markers relative to the edges of the valley down which the glacier flows?In some parts of the world, glaciers are an important natural resource because the nature and behaviour of glaciers are an impact the hydrologic, geologic, and ecological systems of their immediate location.
Due to this, Glaciologists monitor and try to predict the movement and morphology of glaciers.
One of the techniques used by "Glaciologists" in the monitoring and prediction of glaciers in the use of markers.
The movement of markers is measured relative to the edges of the valley down which the glacier flows.
Thus, The movement of the markers are then predicted using the Glen–Nye Flow Law.
The pattern they predict in the markers over time would be C D A B.
Learn more about the glacier here;
https://brainly.com/question/17743729
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PLEASR HELP ME, WILL GIVE BRAINLIEST
a sportsman rushed the circle 15 times in 1/6 hour. distance of this running track 0.4 km. what is the average speed of sportsman?
a) 20 m/s
b) 50 m/s
c) 35 m/s
d) 10 m/s
e) 25 m/s
f) 20.5 m/s
(an answer with explanation would be great)
Answer:
d. 10 m/s
Explanation:
Please help me on this!!!
Suppose a candle is burned in a closed system where matter cannot enter or leave. Given this situation,
what is equal to the mass of the original candle?
Answer:
Mass of the melted wax
Explanation:
The mass of the original candle that has been burnt in the closed system is equal to the mass of the melted wax.
A closed system is a system where matter cannot be exchange with the surrounding. As the candle undergoes a phase change during the burning, it melts to liquid wax. Since there is no loss of mass, the amount of matter in the system is conserved. Therefore, the mass of the molten wax will be the same as the mass of the candle originally melted.When a hammer strikes a nail, the nail..
exerts balanced forces that helps it from moving.
exerts a force equal to the weight of the hammer..
exerts an unbalanced force that changes its velocity.
exerts an equal and opposite force back on the hammer.
Answer:
Could you possible elaborate on the question more?
Answer:
eH?
Explanation:
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from zero to 5.27 m/s in 0.833 s. What linear impulse and average force does a 69.8 kg passenger in the car experience
Answer:
See explanation
Explanation:
From Newton's law; the rate of change of momentum is proportional to the impressed force. Hence;
F.t = mv- mu
F= force
t= time
m= mass
V= final velocity
u = initial velocity
since u = 0, mv= 0
F= MV/t
F= 69.8 × 5.27/0.833
F= 442 N
Impulse = Ft= 442 × 0.833= 368 Ns
Suppose a current flows through a copper wire. Which two things occur?
A. The field is perpendicular to the direction of flow of the current.
B. The field is parallel to the direction of flow of the current.
C. A magnetic field forms around the wire.
D. An electric field forms around the wire.
A magnetic field forms around the wire. and The field is perpendicular to the direction of flow of the current.
What is Magnetic field?
A magnetic field is a visual representation of how the magnetic force is distributed around and inside of magnetic objects.
Most people are at least somewhat familiar with common magnetic items and are aware that there may be forces at work between them.
We are aware that magnets have two poles and that the attraction or repulsion between two magnets depends on how they are oriented (similar poles). We are aware that this occurs in a certain area that surrounds a magnet.
Therefore, A magnetic field forms around the wire. and The field is perpendicular to the direction of flow of the current.
To learn more about magnetic field, refer to the link:
https://brainly.com/question/15719243
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Two go-carts, A and B, race each other around a 1.0 track. Go-cart A travels at a constant speed of 20.0 /. Go-cart B accelerates uniformly from rest at a rate of 0.333 / ଶ . Which go-cart wins the race and by how much time?
Complete Question
Q. Two go-carts, A and B, race each other around a 1.0km track. Go-cart A travels at a constant speed of 20m/s. Go-cart B accelerates uniformly from rest at a rate of 0.333m/s^2. Which go-cart wins the race and by how much time?
Answer:
Go-cart A is faster
Explanation:
From the question we are told that
The length of the track is [tex]l = 1.0 \ km = 1000 \ m[/tex]
The speed of A is [tex]v__{A}} = 20 \ m/s[/tex]
The uniform acceleration of B is [tex]a__{B}} = 0.333 \ m/s^2[/tex]
Generally the time taken by go-cart A is mathematically represented as
[tex]t__{A}} = \frac{l}{v__{A}}}[/tex]
=> [tex]t__{A}} = \frac{1000}{20}[/tex]
=> [tex]t__{A}} = 50 \ s[/tex]
Generally from kinematic equation we can evaluate the time taken by go-cart B as
[tex]l = ut__{B}} + \frac{1}{2} a__{B}} * t__{B}}^2[/tex]
given that go-cart B starts from rest u = 0 m/s
So
[tex]1000 = 0 *t__{B}} + \frac{1}{2} * 0.333 * t__{B}}^2[/tex]
=> [tex]1000 = 0 *t__{B}} + \frac{1}{2} 0.333 * t__{B}}^2[/tex]
=> [tex]t__{B}} = 77.5 \ seconds[/tex]
Comparing [tex]t__{A}} \ and \ t__{B}}[/tex] we see that [tex]t__{A}}[/tex] is smaller so go-cart A is faster
Why would the solstice be important to
an ecosystem?
Answer:
marks an important milestone. It's the shortest day of the year and the longest night of the year, and signals a powerful transition point between seasons that is impossible to ignore. ... In Pagan times the winter solstice was referred to as Yule and was a celebration of the Goddess (Moon) energy
Explanation:
derive formula of kinetic energy of particular having mass volume and velocity of dimensional analysis
Answer:
E=1/2kmv^2
Explanation:
To get the formula...
The dimension of energy is [ M^1 L^2 T^-2]
The dimension of mass [M]=[M^1 L ^0T ^0]
Dimension of velocity[V]=[M ^0 L ^1 T ^−1]
Let [E]=k[M] ^x[V] ^y
K is constant and it remain a dimensionless quantity.
Therefore, M ^1L ^2T ^−2]=k[M ^1L ^0T ^0] x[M ^0L ^1 T ^−1] y
So, x=1,y=2
E= Kmv^2
K=1/2
Therefore E is 1/2kmv^2.
Hot air balloon ( look at pic)
Answer:
I think that the answer is convection.
Explanation:
Hope this helps.
6. Why does sound travel faster through a steel bar than through a swimming pool filled with water?
Water is a denser medium than steel.
Water has a larger wavelength than steel.
Steel has a larger wavelength than water.
Steel is a denser medium than water.
If I hold an .63kg basketball 2 meters above the
ground, how much potential energy does it have?
If I drop the basketball from this height, how
much kinetic energy would it have right before it hits the floor?
Answer:
P.E.= 12.348 joules
K.E.=1.26 joules
Explanation:
HELP ASAP!! WILL TRY TO GIVE BRAINLIEST
Outline the cell cycle
Answer:
The cell cycle has four stages: during the first three, the cell is in interphase, and in the last one, the cell is dividing itself. Also, there is a resting stage when the cell is not preparing itself for the division.
G0: the cell is not in the cell cycle. It is resting and not preparing itself for the division.
G1: the cell grows and synthesizes proteins and other elements that the cell will need for the next stage.
S: In this phase, which is called Synthesis, the cell synthesizes the DNA.
G2: the cell continues to grow. It synthesizes more proteins, RNA, and other elements that it will need for mitosis.
Mitosis: the division of the cell takes place, and as a result, there are two daughter cells. This phase has four stages, prophase, metaphase, anaphase, and telophase.
Explanation:
The cell cycle has four stages. Each of them has a role in the division of the cell. The first one is Gap 1 or G1, then the Synthesis or S phase follows, after S, Gap 2 takes place, and finally, Mitosis.
We can divide the cell cycle into two big groups: interphase, which includes G1, S, and G2, and the changes that the cell suffer can not be appreciated. The other group is the One where the cell division happens, and it includes Mitosis.
G0 is not part of the cell cycle. It is a state where the cell doe not prepares itself for the division. It is resting.
According to newton's second law, if you have an object that is put under acceleration due to a force, how could you reduce the acceleration
Answer:
We could reduce the force or increase the mass of the object.
Explanation:
Using the definition of force, according to Newton's second law, (F = ma) the acceleration is directly proportional to the force and inversely proportional to the mass. Therefore, if we want to reduce the acceleration of an object we have two options:
We could reduce the force We could increase the massIn both cases a will decrease.
I hope it helps you!
please help..................
Answer:
PART A
In a solid
The attractive forces keep the particles together tightly enough so that the particles do not move past each other. ... In the solid the particles vibrate in place. Liquid – In a liquid, particles will flow or glide over one another, but stay toward the bottom of the container.
In a liquid
Particles are quite close together and move with random motion throughout the container. Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.
A gas
The particles move rapidly in all directions, frequently colliding with each other and the side of the container. With an increase in temperature, the particles gain kinetic energy and move faster.
PART B
The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces. The more particles that hit the walls, the higher the pressure.
Explanation:
GOOD LUCK!!! :)
A race car moves along a circular track at a speed of 0.512 m/s. If the car's centripetal acceleration is 15.4 m/s2, what is the distance between the car and the center of the track?
Answer:
The radius is [tex]r = 0.0170 \ m[/tex]
Explanation:
From the question we are told that
The speed at which the race car moves is [tex]v = 0.512 \ m/s[/tex]
The centripetal acceleration is [tex]a _r = 15.4 \ m/s[/tex]
Generally the centripetal acceleration is mathematically represented as
[tex]a_r = \frac{v^2 }{r}[/tex]
=> [tex]15.4 = \frac{0.512^2 }{ r}[/tex]
=> [tex]r = 0.0170 \ m[/tex]
THIS IS THE LAST TIME I POST THIS QUESTION SO PLEASE JUST ANSWER IT AND IF YOU HAVE A QUESTION THEN PUT IT ON THE COMMENTS NOT THE ANSWER
Answer:
1. Name 3 items in nature that contain high concentrations of proteins.
Answer: Animal products like milk, eggs, and meat have really concentrated protein. (nuts and plants you can eat also are really concentrated)
2. What is similar about the primary structure of each protein?
Answer: The primary structures have a balanced level of amino acids.
3. For the proteins you researched, how does the structure help the protein perform its function?
Answer: The primary structure is reflected on its folded structure and that folded structure determines the proteins function.
Explanation:
its kinda hard to answer the questions without you telling us which 2 proteins you wanted to research but i think the easiest options would be eggs and meat.
Take some time to research a utility plant. If there is one in your area, you may even visit it. Otherwise, look up a type of plant that produces energy - such as a nuclear power plant, a hydroelectric plant, or a coal-burning plant. Find out what energy resources are brought into the plant. Then find out what energy and what “waste” is produced by the plant. Describe how the two Laws of Thermodynamics apply to what you find out in your research. Be thorough. You will be using the information you gather to engage in a debate with your class about thermodynamics.
Answer:
bro we cant do this
Explanation:
Answer:
The energy resource brought into a coal power plant is coal.
Found the answer at: https://www.tva.com/energy/our-power-system/coal/how-a-coal-plant-works#:~:text=Coal%2Dfired%20plants%20produce%20electricity,to%20start%20the%20process%20over.
The waste produced by coal power plants is coal ash and the energy produced by coal power plants is electricity.
Answers found at: http://www.groundtruthtrekking.org/Issues/AlaskaCoal/Coal-Ash-Combustion-Wastes.html and https://www.tva.com/energy/our-power-system/coal/how-a-coal-plant-works#:~:text=Coal%2Dfired%20plants%20produce%20electricity,to%20start%20the%20process%20over.
The two laws of thermodynamics apply to what I found out in my research because I know that the entropy increase due to the combustion of conventional fuels is much larger than that resulting from that of nuclear fuels, and is therefore much more dangerous. Also, I know that heat is used to burn coal and create energy.
Found answer at: https://www.encyclopedie-energie.org/en/energy-consumption-and-entropy-release-in-the-biosphere/
Explanation:
Hope this helps, i got an okay score on it but better than nothing i guess lol
2. Explain how the number of batteries and the number of coils of wire affect the strength of an electromagnet.
Answer:
The more the number of batteries and coils, the more the electromagnetism.
Explanation:
An electromagnet is a structure formed by passing electricity through a good conductor. Due to the 'Magnetic Effect Of Electric Current', the object functions as an electromagnet, that is, by attracting magnetic objects to it.
This intensity of electromagnetism is greatly dependent on the Electric flow or Current as well as the Number of coils on the electromagnet.
By increasing the number of coils in the electromagnet, you actually increase the electric flow per area or the Magnetic Induction, helping to broaden its magnetic field.
The more batteries you connect to a circuit, the more will be its voltage. Similarly, the more batteries you connect to an electromagnet, the greater will be its strength, due an increased flow of electrons.
2km south is a measure of what
The answer Is kilometers
A body of mass 60kg is displaced through 90m in 4 second when force is applied to it.calculate acceleration and the force applied
Answer:
force=337.5N
accelertion=5.63ms^-2
Explanation:
please find the answers in the pictures above maam or sir.
