Which is the best example of Newton's Third Law of Motion? (1 point)
point)
A hockey puck sliding on the ice will keep going until it is hit by another player or hits the wall.
It takes more force to move a large tractor trailer than it does to move a small sports car.
A swimmer who jumps off a raft moves forward through the air, and the raft moves backwards through the water.
You are riding in a car that makes a quick right turn. You immediately slide across the back seat.
Answers
The best example of Newton's Third Law of Motion among the given options is the scenario of a swimmer jumping off a raft.
When a swimmer jumps off a stationary raft, two opposite and equal forces are exerted. As the swimmer propels themselves forward through the air, they push against the raft. According to Newton's Third Law, for every action, there is an equal and opposite reaction. Therefore, the swimmer experiences a forward force that propels them through the air, while the raft experiences an equal and opposite backward force, causing it to move in the opposite direction through the water.
This example demonstrates the conservation of momentum. The swimmer's push generates a force, causing them to accelerate in one direction. Simultaneously, the raft experiences an equal force in the opposite direction, resulting in its backward movement through the water.
This illustrates the principle that forces always occur in pairs. The swimmer and the raft form an action-reaction pair, experiencing forces of equal magnitude but in opposite directions.Overall, the swimmer jumping off a raft and the resulting motion of the swimmer and the raft exemplify Newton's Third Law of Motion by showcasing the equal and opposite forces at play in the system.
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Related Questions
Is it possible for a nitrogen atom to change into an oxygen atom? If so, how?
Answers
Answer:
The nitrogen atom of an amine may be contained in a ring, a common feature of Nitrogen or oxygen atoms are the most common targets for protein methylation.
Explanation:
4 points) a stone is thrown straight up from the edge of a roof, 775 feet above the ground, at a speed of 20 feet per second.a. remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 2 seconds later? b. at what time does the stone hit the ground? c. what is the velocity of the stone when it hits the ground?
Answers
a. The stone is at a height of 719 feet 2 seconds after it is thrown.
b. The stone hits the ground at approximately 9.656 seconds after it is thrown.
c. The velocity of the stone when it hits the ground is approximately -311.712 feet per second (which means it is moving downwards)
a. To find the height of the stone 2 seconds later, we can use the following kinematic equation
h(t) = h(0) + v(0)t + (1/2)at^2
where h(t) is the height of the stone at time t, h(0) is the initial height (775 feet), v(0) is the initial velocity (20 feet per second), a is the acceleration due to gravity (-32 feet per second squared), and t is the time.
Plugging in the values, we get
h(2) = 775 + 20(2) + (1/2)(-32)(2)^2
h(2) = 719 feet
Therefore, the stone is at a height of 719 feet 2 seconds after it is thrown.
b. To find the time at which the stone hits the ground, we can use the same kinematic equation
h(t) = h(0) + v(0)t + (1/2)at^2
But this time, we want to find the time when h(t) = 0 (since the stone hits the ground when its height is zero). So we can set the equation equal to zero and solve for t
0 = 775 + 20t + (1/2)(-32)t^2
0 = -16t^2 + 20t + 775
Using the quadratic formula
t = (-b ± sqrt(b^2 - 4ac)) / 2a
where a = -16, b = 20, and c = 775
t = (-20 ± sqrt(20^2 - 4(-16)(775))) / 2(-16)
t = (-20 ± sqrt(7840)) / (-32)
t = 9.656 or t = -4.031
Since time can't be negative, we can discard the negative solution. Therefore, the stone hits the ground at approximately 9.656 seconds after it is thrown.
c. To find the velocity of the stone when it hits the ground, we can use another kinematic equation
v(t) = v(0) + at
where v(t) is the velocity of the stone at time t, v(0) is the initial velocity (20 feet per second), a is the acceleration due to gravity (-32 feet per second squared), and t is the time at which the stone hits the ground (9.656 seconds).
Plugging in the values, we get
v(9.656) = 20 + (-32)(9.656)
v(9.656) = -311.712 feet per second
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How do you find the normal force here? I forgot
Answers
Answer:
mass times grav
Explanation:
To weigh a fish, a person hangs a tackle box of mass 3. 5 kilograms and a cooler of mass 5 kilograms from the ends of a uniform rigid pole that is suspended by a rope attached to its center. The system balances when the fish hangs at a point 1/4 of the rod's length from the tackle box. What is the mass of the fish?
A) 1. 5 kg
B) 2 kg
C) 3 kg
D) 6 kg
E) 6. 5 kg
Answers
The mass of the fish is 3 kg.
What is mass?
In physics, mass is a proportion of how much matter is in an item. It is typically estimated in kilograms (kg). Mass is a scalar amount, meaning it just has size and no course.
Mass is unique in relation to weight, which is the force applied to an item because of gravity. Mass is an inherent property of an item and doesn't rely upon its location or environment. Weight, then again, relies upon the gravitational force and can change depending on the location.
rotational equilibrium
(3.5 )(9.8)(L/2) + m(9.8)(L/4) - (5)(9.8)(L/2) = 0
34.3(L/2)+9.8m(L/4)- 49(L/2)=0
34.3(L/2)- 49(L/2)+9.8m(L/4)=0
-14.7(L/2)+9.8m(L/4)=0
-7.35L+2.45mL=0
2.45mL=7.35L
m=7.35L/2.45L
m = 3 kg.
thus mass of the fish is 3 kg.
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Super Urgent Plz HELP! A swimmer has a swimming speed of 5.35 m/s in still water. When she heads directly across the river, she ends up travelling downstream at an angle of 30° (with respect to a line perpendicular to the shore). (a) What is the speed of the current? (b) What heading would the boat need to have in order to reach a point directly across the river? (c) If the stream is 15 m wide, how long would a trip directly across the river take?
Answers
Answer:
(a)3.09 m/sec (b)θ= 35.28° (c) t =3.43 sec
Explanation:
Solution
Given that:
The swimming speed of swimmer =5.35 m/s
The downstream angle = 30°
Now,
(a)we find speed of the current which is given below:
V = V swimmer + V river
Tan 30° = Vr/Vs
Thus
Vr = 5.35 * tan 30°
Vr = 5.35 * 0.5773
= 3.09 m/sec
(b)She would have velocity at direction such that she reaches across the shore
Then
Vs sin θ =Vr
sin θ = Vs/Vr
sin θ = 3.09/5.35
θ= 35.28°
Therefore, She had to make θ= 35.28° on another side of the river
(c) Thus
t = d/Vs cosθ
=15/5.35 * cos (35.28°)
t =3.43 sec
Which of the following devices would you expect to consume the most energy for each hour that it operates?
Answers
What factors affect an objects kinetic energy?
Answers
Answer:
friction
air drag
every thing that opposes the motion affects kinetic energy
Explanation:
kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest
potential energy ∝ 1/(kinetic energy)
as kinetic energy increases potential energy decreases
Hot sand cools off faster at night than do plants and vegetation. hence, the specific heat capacity for sand is _______.
Answers
Hot sand cools off faster at night than plants and vegetation because sand has a lower specific heat capacity.
Specific heat capacity is the amount of heat energy required to raise the temperature of a substance by a certain amount. Sand has a lower specific heat capacity than plants and vegetation because it requires less heat energy to raise its temperature. Therefore, when the temperature drops at night, and loses heat more quickly than plants and vegetation.
The specific heat capacity for sand is lower than that of plants and vegetation, which is why hot sand cools off faster at night.
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how does energy change ? explain with example . how does bulb generate ? write with it's part.
Answers
Answer:
According to the law of conservation of energy, energy is neither created nor destroyed but changes from one form to another
The energy in the light bulb comes from the movement of electrons through the resistance of the coil of the bulb, therefore, the energy in the bulb is changed from electric energy to heat and light energy as follows;
The friction between the moving electrons and the resistive filament of the light bulb results in the slowing down of the rapidly moving electrons
The part change in the (kinetic) energy of the electrons moving through the filament of the bulb as they slow down is observed as sensible heat which causes the bulb to be hot
Another part of the change in energy is given seen as the light given off by the bulb filament in an incandescent bulb as the filament becomes very hot from the movement of the electrons which causes the bulb to glow (produce light), due to the incandescent characteristics of the filament
Explanation:
the Coral reef ecosystem has a higher diversity of organisms than any other ecosystem. explain the conditions necessary for coral reefs to form. include in your explanation the relationship between coral and algae. predict whether a coral reef would be likely to form near the mouth of a major river. explain why or why not.
Answers
The requried, the Coral reef ecosystem has a higher diversity of organisms than any other ecosystem.
What are Coral reefs?Coral reefs are complex ecosystems with high biodiversity that can be found in warm, shallow, and clear waters. Coral reefs require specific environmental conditions to form.
The conditions are necessary for coral reefs to form.
Warm water temperatures.Coral reefs require clear and shallow water to allow sunlight to penetrate to the bottom where the corals live, as they need light to photosynthesize and grow.Coral reefs require nutrient-rich waters to support the growth of the organisms that comprise the reef ecosystem.Stable and hard substrateThe interaction between coral and algae is critical for the formation and preservation of coral reefs. Corals have a symbiotic relationship with zooxanthellae, which live within coral tissue.
A coral reef is unlikely to form near the mouth of a major river because freshwater runoff from the river can harm coral growth and survival.
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Help me to answer this..
Click the picture to see the full question.
Answers
Explanation:
Newton second law of motion
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (40pts)
Answers
Moving a Slinky up and down will create what kind of wave?
o longitudinal
electromagetic
transverse
surface
Answers
Answer:
Transverse, I took a quiz and got it right :)
Answer:
transverse
Explanation:
Which of the following has the greatest mass?
A. star
B. moon
C. planet
D.galaxy
Answers
Answer: I think the answer is d
Explanation: sry if wrong
When is the photoelectric effect observed?
Answers
The photoelectric effect is observed when light interacts with matter, specifically when photons (particles of light) transfer their energy to electrons in an atom or a material. The correct answer is A. When an electric current results from light shining on a surface.
In the early 20th century, Albert Einstein provided a groundbreaking explanation of the photoelectric effect, which earned him the Nobel Prize in Physics in 1921. His work established the dual nature of light, both as a wave and as a particle (photon). Here's a detailed explanation of the photoelectric effect:
When light shines on a surface, it is composed of photons that carry energy. These photons interact with electrons in the material. The photoelectric effect occurs when photons transfer their energy to electrons, causing them to be emitted from the material.
The process can be described in several steps:
1. Absorption: When a photon with sufficient energy interacts with an electron in an atom or material, it can be absorbed. The energy of the photon is transferred to the electron, promoting it to a higher energy level or even releasing it from the atom.
2. Ejection: If the energy of the absorbed photon is greater than or equal to the binding energy of the electron (also known as the work function), the electron can be ejected from the material. The work function represents the minimum energy required to remove an electron from the material's surface.
3. Electron emission: The ejected electron can now contribute to the formation of an electric current. If there is a conducting material connected to the surface, the released electron can move through the material, resulting in the flow of electric charge.
The photoelectric effect is not observed when light acts solely as a wave (option B). While light does exhibit wave-like properties, such as interference and diffraction, these phenomena do not directly involve the transfer of energy from photons to electrons.
Option C, "When an electric current causes light to be produced," does not accurately describe the photoelectric effect. The photoelectric effect involves the emission of electrons due to the interaction of light with matter, but it does not directly produce light as a result of an electric current.
Option D, "Any time an electric current is produced," is a broad statement that encompasses various phenomena beyond the photoelectric effect. Electric currents can be produced in various ways, such as through the flow of charged particles or the movement of electrons in a conductor. The photoelectric effect is a specific phenomenon that occurs when light interacts with matter and results in the emission of electrons.
To summarize, the photoelectric effect is observed when light shines on a surface, and the energy of photons is transferred to electrons, leading to their emission from the material. This emission of electrons can result in the formation of an electric current.
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I think it is the question:
When is the photoelectric effect observed?
A. When an electric current results from light shining on a surface
B. When light acts as a wave
C. When an electric current causes light to be produced
D. Any time an electric current is produced .
a dogs tail hit a 1.3kg flower vase, knocking it over. the net force on the flower vase over time is shown below
what is the bases speed at t=20 ms?
round answer to two significant figures
note that time is in ms.
Answers
Answer: 0.15 m/s
Explanation:
Interferometry uses two or more telescopes to achieve:
Answers
Interferometry uses two or more telescopes to achieve higher resolution than a single telescope.
When light from two or more telescopes is combined, the waves interfere with each other.
This interference can be constructive, in which the waves add together to create a brighter signal, or destructive, in which the waves cancel each other out.
The pattern of constructive and destructive interference creates an interference pattern, which can be used to measure the size and shape of objects.
The resolution of an interferometer is determined by the distance between the telescopes.
The larger the distance, the higher the resolution. This is because the interference pattern is spread out over a larger area, which allows for more detail to be seen.
Interferometry is a powerful tool for astronomers, as it allows them to see objects that would be invisible to a single telescope. It is also used in other fields, such as medical imaging and engineering.
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Interferometry uses two or more telescopes combined to produce a resolution similar to that of a larger telescope. The resolution depends not on the size of the telescopes but on their separation. Advancements in technology and computing power have made it possible to separate larger interferometer arrays for greater resolution.
Explanation:Interferometry uses two or more telescopes in an interferometer array to achieve a resolution equivalent to that of a single telescope with a diameter equal to the baseline separating the individual telescopes. Instead of interfering with each other, the telescopes in the interferometer array work cooperatively, utilising the technique of interference to achieve a superior resolution.
An interferometer combines electromagnetic radiation from two or more telescopes and the resolution depends not on their individual apertures but on their separation. As such, two telescopes separated by 1 kilometre, would provide the same resolution as a single dish 1 kilometre across, although they wouldn’t collect as much radiation.
Earlier, the size of interferometer arrays used to be limited because all the dishes needed to be physically connected. However, with current technology and increased computing power, larger interferometer separations can be achieved without requiring a physical connection between telescopes. The precise arrival of electromagnetic waves from space at each telescope can be timed and this data is later combined to yield an extremely high-resolution image.
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Describe 2 potential problems or limitations of ratio
analysis.
Answers
2. Overlooking External Factors: Ratio analysis primarily focuses on internal operations of a company, but there are various external factors like market conditions, industry trends, and economic cycles that can significantly impact a company's performance. These factors might not be reflected directly in the financial ratios, thus potentially leading to an incomplete understanding of the company's overall situation.
You are at a circus and you see a stunt man climb up 29.4 meters into a cannon. He gets fired horizontally out of the cannon with a speed of 57.1 m/s.
How long was stunt man in the air for? Round your answer with TWO decimal places. *Correct rounding rules apply
Answers
Answer:2.45 s rounded
Explanation:
29.4m=1/2(-9.8)t^2
29.4/-4.9=6
√6= 2.44> rounded> 2.45 s
A train is uniformly slowed down from 35m/s to 21m/s over a distance of
350m. Calculate the acceleration and the time taken to come to rest from the 35m/s.
Answers
✴ A train is uniformly slowed down from 35m/s to 21m/s over a distance of 350m. Calculate the acceleration and the time taken to come to rest from the 35m/s.
✒ The acceleration is - 1.12 ms-² and the time taken to come to rest from the 35m/s is 31.3 seconds .
Given :-
A train is uniformly slowed down from 35m/s to 21m/s over a distance of 350m.
To Find :-
Calculate the acceleration and the time taken to come to rest from the 35m/s.
Calculation :-
According to the question,
Initial velocity ( u ) = 35 m/s
Final velocity ( v ) = 21 m/s
Displacement ( s ) = 350 meters
♠ A train is uniformly slowed down from 35m/s to 21m/s over a distance of 350m.
From the equation of motion ,
↗ v² - u² = 2as
➡ ( 21 )² - ( 35 )² = 2 x a x 350
➡ 441 - 1225 = 2 x a x 350
➡ - 784 = 700 x a
➡ - 784 = 700a
➡ 700a = - 784
➡ a = -784/700
➡ a = - 1.12 ms-²
So, The Acceleration of the train is - 1.12 ms-².
Initial velocity ( u ) = 35 m/s
Acceleration ( a ) = - 1.12 m/s²
Final velocity ( v ) = 0 m/s
From, the equation of motion ;
↗ v = u + at
➡ 0 = 35 + ( - 1.12 x t )
➡ 0 = 35 + ( - 1.12t )
➡ 0 - 35 = - 1.12t
➡ - 35 = - 1.12t
➡ t = 35/1.12
➡ t = 3500/112
➡ t = 31.3 seconds
The time taken to come to rest from the 35m/sis 31.3seconds.
What are the intercepts of the graphed function?
Answers
Answer:
the intercepts of a graph are point at which the graph crosses the axes
An object's velocity/speed increases, multiplied by a factor of 7. What factor would its Kinetic Energy increase by?
Answers
Answer:
k.E= 49 ms^-2
Explanation:
k.E= 1/2 mv^2
From that formula of k.E
K.E is directly proportional to the ( velocity)^2
K.E directly proportional to (7)^2
so that k.E increase by 49
Think about a situation at school where you or someone you know
has demonstrated grit. Describe the situation. Pls help me
Answers
Answer:
to have courage and show the strength of your character. ... A person with true grit has passion and perseverance. Goals are set and followed through.
Explanation:
for example: i had the passion and the courage to finish my school work and chores for i can go out with my friends and to get out of the house for a bit and have fun so i had the courage to finish chores from the house and do some schoolwork for i can finish ad hang out with some friends. so i had the strength to finish everything because i didn't want to be doing school work and chores any more so i had the passion to finish up quickly
. Draw the position vs. time graph for a person walking at a
constant speed of 1 m/s for 10 seconds. On the same axes, draw
the graph for a person running at a constant speed of 4 m/s.
Answers
The slope of position versus time graph represent the velocity.
position vs. time graph attached below.
In a position-time graph, the velocity of the moving object is represented by the slope of the graph line.
So, the position vs. time graph for a person walking at a constant speed of 1 m/s for 10 seconds will be a straight line having slope of 1 in the interval of 0 to 10 seconds.
Similarly, the position vs. time graph for a person walking at a constant speed of 4 m/s for 10 seconds will be a straight line having slope of 4 in the interval of 0 to 10 seconds.
Graph attached below.
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4 meters south + 3 meters North =
Answers
Answer:
Your position would be -1
Explanation:
I think that's the answer you would need to collaborate more so i can give you a clear answer.
Write the importance of international bureau of weight and measures in the country
Answers
Answer:
International Bureau of Weights and Measures (BIPM) is an international organization founded to bring about the unification of measurement systems, to establish and preserve fundamental international standards and prototypes, to verify national standards, and to determine fundamental physical constants. The bureau was established by a convention signed in Paris on May 20, 1875, effective January 1876. In 1921 a modified convention was signed. The convention provides for a General Conference that meets every four years to consider required improvements or modifications in standards. An International Committee of Weights and Measures, composed of 18 scientists elected by the conference, meets annually to monitor worldwide uniformity in units of measure.
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Read the scenario. A car starts 10 m north of a reference point. It moves at a constant velocity over the next 5 s, reaching a position of 10 m south of the reference point. What is the car’s average velocity? 2 m/s south 4 m/s north 0 m/s 4 m/s south
Answers
Answer:
4 m/s south
Explanation:
This is a pretty easy one.
Assume that the car has a reference point ragged x
We also know that the car starts moving at a point 10 m North of X. It moves steadily at a uniform velocity and ended at a position 10 m south of X.
If x is the reference point, we can infer that the car moves a total distance of, 10 m + 10 m.
Thus, the total distance moved by the car is 20 m.
It is also stated that it achieves that distance in 5 seconds.
Velocity is defined as the ratio of distance with respect to the tome taken, i.e V = d/t
Then, the velocity is
V = 20 / 5 = 4 m/s
Considering the fact that the car left and moved towards the south. We can say that it moved 4 m/s South.
PLEASE HELP 50 AND BEST ANSWER
Begin by printing out a copy of the periodic table. Use the file attached to the assignment page or download the file from the Course Resources folder.
1. Label the rows as the electron energy levels.
2. Label the number of valence electrons in Columns 1,2, and 13-18.
3. Label the metals, semi-metals, and non-metals using different colors. Make sure you don't obscure any of the information about different elements by coloring.
4. Label the ion charges for elements in the first 3 rows. Remember all the elements in Columns 1,2,16,17,18 will always have the same charge. Elements in Columns 13,14, or 15 can have different charges within the same row it's especially useful to write these charges on your periodic table. --
5. Label the trends for atomic size, ionization energy, and electron affinity.
Answers
Label the rows as the electron energy levels:
The rows of the periodic table are also known as periods. There are seven periods, and each period corresponds to a particular energy level. You can label them from 1 to 7, starting from the top row.
What are the responses to other questions?Label the number of valence electrons in Columns 1, 2, and 13-18:
Columns 1 and 2 are the s-block elements, and they have 1 and 2 valence electrons, respectively. Columns 13-18 are the p-block elements, and they have 3 to 8 valence electrons, respectively. You can label the number of valence electrons in each column.
Label the metals, semi-metals, and non-metals using different colors:
Metals are on the left side of the periodic table, semi-metals are in the middle, and non-metals are on the right side. You can use different colors to label them without obscuring any of the information about different elements.
Label the ion charges for elements in the first 3 rows:
Elements in the first 3 rows of the periodic table have predictable ion charges. The alkali metals (Group 1) have a charge of +1, the alkaline earth metals (Group 2) have a charge of +2, and the elements in Group 13 have a charge of +3. For Groups 15, 16, and 17, the charges are -3, -2, and -1, respectively. The noble gases (Group 18) are unreactive and do not form ions. You can write these charges for each element in their respective positions.
Label the trends for atomic size, ionization energy, and electron affinity:
Atomic size generally decreases from left to right across a period and increases from top to bottom within a group. Ionization energy generally increases from left to right across a period and increases from bottom to top within a group. Electron affinity generally increases from left to right across a period and becomes less negative from top to bottom within a group. You can label these trends on your periodic table as well.
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State Newtons Second law of motion and its formula derivation.
Answers
Answer:
Newtons Second Law of motion states that"The rate of change of momentum is directly proportional to the force applied"This means that, ◎ F = △P/t◎ F = P2-P1 tsince P(momentum) = MV◎ F=MV2-MV1 t ◎ F= M(V2-V1) t V2 - V1 = a⊙ F= maExplanation: Let The force applied on a body be 'F', and the change in momentum of the body in 't' time is 'p' then according to the above statement:
1. F∝ \(\frac{dp}{dt}\)
2. F=k.\(\frac{dp}{dt}\) (where k is the proportionality constant)
3. F=k.\(\frac{d(m.v)}{dt}\) (momentum = velocity x mass)
4. F= k.(m.\(\frac{dv}{dt}+v\frac{dm}{dt}\)) (separation formula of derivation)
5. F= \(k(m.a+v.0)\) (at low-speed mass does not vary with time so, \(\frac{dm}{dt}=0\))
6. F= k.m.a (for unit mass to produce 1 m/\(s^{2}\) acceleration 1-newton force is required hence in SI units: k=1 )
7. F=m.a (this is the equation for the second law of motion)
The weather report this morning stated there is a thick fog in your town. Visibility is less than 500 feet. How many kilometers in front of your vehicle can you see?.
Answers
There is 3281 feet in a kilometer, so you would divide 500/3281 and get your final answer of 0.1524 kilometers