According to the hydrodynamic stability, the metacentric height is positive. Thus, the barge is will float stable.
Draft= W / Aρ
Here weight of barge is W, area of the barge is A, and density of water is ρ.
Substitute 400,000 lbf for W, 20 ft for l, 40 ft for b, and 62.4 lbf ft³.
Draft= 400000 / (lxb)×624
= 400000/(20×40)×62.4
= 8.0128ft
≈ 8ft
Thus, the depth of draft is 8.0 ft. Hence, it is satisfactory.
Determine the metacentric height (GM) using the formula:
GM= I/v - C.G
=. bxd³/12 / (hxbxd) - (h - h/2)
Here, moment of inertia is I, volume of the barge is V, center of gravity is CG, and height is h, width is b, and depth is a respectively.
Substitute 20 ft for d, 40 ft for b, 4.0 ft for C.G, and 8.0 ft for h
40x20³/12 / (8.0x40x20) - (8.0- 8.0/2)
=4.167-4.0
= 0.167 ft
Thus, the metacentric height is 0.167 ft.
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why is a battery used when we require more electricity
A battery is used when we require more electricity because it can store and release electrical energy as needed.
Batteries consist of one or more cells, each of which contains two electrodes and an electrolyte that allows for the flow of charged particles between the electrodes. When a battery is connected to a device, the charged particles flow from the positively charged electrode to the negatively charged electrode, providing a flow of the electricity.
The amount of electricity stored in a battery is limited, but it can be released as needed, even when the source of the electricity is not available. This makes batteries useful for supplying electrical energy in situations where there is a temporary increase in demand, such as when more devices are turned on or when the source of electrical energy is unavailable, such as during a power outage.
Additionally, batteries are portable and can be easily carried, making them useful for supplying electrical energy in remote locations where there is no access to the electrical grid.
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in coming to a stop, a car leaves skid marks 85 m long on the highway. assuming a deceleration of 3.50 m/s2 m / s 2 , estimate the speed of the car just before braking.
The speed of the car just before applying the brakes is 24.39 m/s.
Given details in he question are:
Deceleration is 3.50 m/s2
Skid marks by the kid - 85 m
The formula to be used in the question is:
[tex]V^{2}=u^{2}+2as\\[/tex]
[tex]v^{2}=0+ 2 (3.50)(85)\\[/tex]
[tex]v^{2}= 595\\v=24.39 m/s[/tex]
The speed of the car just before applying the brakes is 24.39 m/s.
The average speed can be explained as the displacement of a particle divided into a time in which the displacement occurs. Instantaneous speed is calculated to be the limit of the average speed as the time interval approaches zero. Speed denotes distance traveled divided by time on the contrary instantaneous speed measures how quickly and in which direction does it move.
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when you bring a small object close to a charged tape you find that there is an attraction between them. considering all the evidence you have seen, what can you conclude about the charge of the small object?
Option d is Correct. B or C might be accurate. A charged tape will draw both neutrally charged objects and those with the opposite charge to the tape.
The tape has a negative charge because it has additional electrons. Electrons in your skin are rejected and migrate away when you move your finger close to the tape. Your finger tip's skin develops a tiny positive charge as a result of this. The tape goes toward your finger because positive and negative things draw each other.
Charged objects have an imbalanced charge, either more positive protons or electrons than electrons. Additionally, neutral objects have an equal quantity of protons and electrons, balancing their charge. The same idea that applies to atoms also applies to objects.
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Correct Question:
When you bring a small object close to a charged tape you find that there is an attraction between them. Considering all the evidence you saw in early in this unit, what can you conclude about the charge of the small object?
a. It has the same charge as the tape.
b. It is uncharged.
c. It has the opposite charge to the tape.
d. Either B or C could be true.
A bus is initially traveling north at a constant speed, as shown in the figure above. As the bus starts to make a left turn without changing speed, a passenger notices that a box on the floor starts sliding toward the right side of the bus. Which of the following top views of the box, when correctly labeled, would best represent all of the horizontal forces exerted on the box as it starts sliding?
Assuming that the box is not sliding off the bus, the forces exerted on it can be represented by the following diagram:
F
F: friction force
The friction force, represented by F in the diagram, acts in the opposite direction of the box's sliding motion. This force is caused by the friction between the box and the bus floor, and it is the only force present in the system. As the bus turns to the left, the box's sliding motion is directed to the right. The direction of the friction force then changes to the left, opposing the motion of the box and slowing it down until it stops.
the motorcycle is traveling at a constant speed of 60 km>h. determine the magnitude of its acceleration when it is at point a.
The magnitude of its acceleration when it is at point a. is 0.763 [tex]m/s^2[/tex]
Acceleration is the rate at which the speed and direction of a moving object change over time.Something is said to be accelerating when it starts to move faster or slower.Motion on a circle accelerates even while the speed is constant because the direction is always changing.These collisions lead to an acceleration of all other motion types.Another vector quantity is velocity. The change in velocity vector over a time interval divided by the time interval is the definition of acceleration.
[tex]y=\sqrt2 x^{\frac{1}{2} }[/tex]
[tex]\frac{dy}{dx} =\frac{1}{2} \sqrt2x^{\frac{-1}{2} }[/tex]
[tex]\frac{d^2y}{dx^2} =\frac{-1}{4} \sqrt2x^{\frac{-3}{2} }[/tex]
[tex]p=\frac{[1+\frac{dy}{dx}^2]^{\frac{3}{2} } }{\frac{d^2y}{dx^2}} =\frac{[1+\frac{1}{2} \sqrt2x^{\frac{-1}{2} }]^{\frac{3}{2} } }{\frac{-1}{4} \sqrt2x^{\frac{-3}{2} }} \\:[/tex] at x= 25m
p=364.21 m
acceleration: the speed of motorcycle at a is
v = [tex](60) \frac{km}{h}(\frac{1000 m}{1Km})(\frac{1h}{3600s})[/tex]= 16.67 m/s
[tex]a_n=\frac{v^2}{p}=\frac{16.67^2}{364.21}=0.7627 \: m/s^2[/tex]
since the motorcycle travels with the constant speed a=0 the magnitude of acceleration of motorcycle at a is
a=[tex]\sqrt{a_r^2+a_n^2}=\sqrt{0^2+0.7627^2}=0.763\: m/s^2[/tex]
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for springs connected in series, how does the effective spring constant compare to the individual spring constants? determine a simple mathematical relationship.
For springs connected in series, the effective spring constant can be compared to the individual spring constants mathematically by k1 + k2 + k3 +... + kn = keff
The effective spring constant, also known as the equivalent spring constant, is equal to the sum of the individual spring constants for springs connected in series.
where Keff represents the effective spring constant and ki represents the spring constant of the ith spring in the series.
It is vital to notice that springs in a series connection experience the same amount of displacement and hence the same amount of force. Each spring's displacement is proportional to its spring constant, and the overall displacement of the system is equal to the sum of each spring's displacements. This indicates that the system's equivalent spring constant will be the total of the separate spring constants indicated above.
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two telephone poles are separated by 40 m and connected by a massless wire. a bird of mass 0.5 kg lands on the wire midway between the poles, causing the wire to sag 2.0 m below horizontal. what is the tension in the wire?
According to the static equilibrium, the tension in the wire would be 24.62 N
Since all parts of the system are at rest (Ftotal = Ttotal = 0), we will be using static equilibrium. An object is said to be in a state of static equilibrium when all of the forces acting on it are in equilibrium with one another and the object is not moving in regard to the relative plane.
Thus, the tension in the wire would be:
2Fy = m × g
Fy = (m × g) ÷ 2
Fy = (0.5 × 9.8) ÷ 2
Fy = 2.45 N
Sinθ = 2 ÷ √(4+400)
F = Fy ÷ Sinθ
F = 2.45 ÷ 0.0995
F = 24.62 N
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in this activity, you will create a graph of the displacement vs. the weight on the spring. what do you think this graph will look like?
The mass is proportional to the spring displacement, if you're picturing a mass attached to a spring suspended from the ceiling.
How does weight impact a spring?
Since the force the spring applies to you is proportional to your weight, you provide a force to the spring that is equal to your mass, compressing it. Your mass will affect how long the spring changes.
According to Hooke's law, the force and displacement for an elastic spring are proportional to one another. It implies that when the spring force rises, the displacement rises as well.
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when the ciliary body changes the size and shape of the lens by contracting or relaxing, this refractory adjustment is known as:
The zonular fibers, a group of minuscule fibrous strands, hold the ciliary body to the lens. This add-on is essential
What exactly minuscule is tiny?
The definition of tiny. (Page 1 of 2) lowercase letter 1 2a: one of a number of cursive writing types that emerged in the ancient and medieval periods and included small, simpler forms. B: This kind of a letter.
Is our understanding of the effects of any occurrence minimal?
Or possibly tiny, like the daydreams we think and pray will keep us safe. It should be clear that compared to the full range of repercussions leading till the of history, our understanding of the impact of any given event is extremely limited.
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if a pendulum-driven clock gains 5.20 s/day, what fractional change in pendulum length must be made for it to keep perfect time? (your answer should be negative if the length is decreased.)
The fractional change in pendulum length must be -0.0026, meaning the pendulum length should be decreased by 0.0026 of its original length.
To keep a pendulum-driven clock accurate, the fractional change in pendulum length must be negative since a decrease in length will cause the pendulum to go faster.
To find the exact fractional change required, you must use the equation for simple harmonic motion, which states that the period of the pendulum is proportional to the square root of the length.
If the clock is gaining 5.20 s/day, then the fractional change in pendulum length must be -0.0026, meaning the pendulum length should be decreased by 0.0026 of its original length.
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you are going to an outdoor concert, and you'll be standing near a speaker that emits 51 w of acoustic power as a spherical wave. what minimum distance should you be from the speaker to keep the sound intensity level below 94 db ?
The minimum distance from the speaker to keep the sound intensity level below [tex]94 dB is 3.7 m.[/tex]
What is the intensity ?.Intensity is the amount of energy or force associated with a particular phenomenon or activity. It is usually measured in terms of power, amplitude, or strength. Intensity can be seen in many forms, including sound, light, heat, electricity, and magnetism. In terms of sound, for example, intensity is measured in decibels and is related to the loudness of a sound.
The intensity of a sound wave decreases with distance. Intensity is measured in decibels (dB) and is related to the sound pressure level (SPL) of the wave.
The formula for calculating the intensity of a sound wave at a given distance from its source is as follows:
[tex]I = I_o/r^2[/tex]
where [tex]I_o[/tex] is the initial intensity of the wave (in dB) and r is the distance from the source (in meters).
In this case, the initial intensity of the wave is 51 W as a spherical wave, so[tex]I_o = 51 W.[/tex]
We want to find the minimum distance r such that the intensity of the sound wave is 94 dB, so we can rearrange the equation to solve for r:
[tex]r^2 = I_o/Ir = sqrt(I_o/I)r = sqrt(51 W/94 dB)r = 3.7 m[/tex]
Therefore, the minimum distance from the speaker to keep the sound intensity level below 94 dB is 3.7 m.
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he ship based on this hull design is to have a cruising speed of 24 mph. to ensure dynamic similarity for a 1:32 scale model, at what velocity should the model be tested?
The velocity with which the model should be tested is calculated to be 768 mph.
When the length, time, and force scale ratios of the model and prototype are the same, dynamic similarity exists.
Dynamic similarity enables scaling of model test outcomes to forecast matching outcomes for the full-scale prototype.
The dynamic similarity of a ship is given to have a scale 1:32.
The cruising speed of the first ship is given as, 24 mph.
So, the velocity of the model is calculated as,
⇒ 24 × 32 = 768 mph
Thus, the velocity of the model should be tested at 768 mph.
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a karate master is about to split a piece of wood with his hand. in order to deliver the maximum force to split the wood, she will:
With as much force as she can muster, strike it wood perpendicular towards its surface. Then, as swiftly as she can, snap her hand back.
Which four fundamental forces are there?Any of the four fundamental forces in physics—gravitational, magnetic, strong, & weak—that control how things or particles interact as well as how some particles decay—is referred to as a fundamental force, also known as a fundamental interaction. It is possible to link these fundamental forces to all known natural forces.
What are the two terms that best sum up a force?
A force can be adequately described by two concepts: push and pull. The push or pull that causes a mass item to change velocity in physics is known as force.
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-.The Scablands in Washington are large
areas of erosion due to immense flooding. A
student claims the flooding of the Scablands
is due to erosion and melting of glaciers
which increased the amount of water until
it overwhelmed the dams. Using the claim
and map shown, create a claim-evidence-
reasoning model.
Water flo
Answer:
Here is a claim-evidence-reasoning (CER) model for the student's claim about the flooding of the Scablands:
Claim: The flooding of the Scablands is due to erosion and melting of glaciers which increased the amount of water until it overwhelmed the dams.
Evidence:
Erosion patterns in the Scablands that suggest a large amount of water was present in the region.
The presence of glacial deposits in the area.
The location of the Scablands near glacial formations that would have melted and contributed to the increase in water.
Reasoning: The evidence supports the idea that melting glaciers and erosion caused a significant increase in water in the region, which then overwhelmed the dams and caused flooding in the Scablands. The presence of glacial deposits and the proximity to active glacial formations suggest that a large amount of water was released into the area, causing the observed erosion patterns and the flooding.
Explanation:
rigid rod of negligible mass lying along the y axis connects three particles as shown: should the total rotational kinetic energy from (c) be the same as the total kinetic energy of the system you calculated from (e)? why or why not?
Total rotational kinetic energy & the total kinetic energy (KE_tot) are not necessarily same as one is associated with rotational motion and other with total energy.
The total rotational kinetic energy (KE_rot) and the total kinetic energy (KE_tot) of a system are not necessarily the same, as they represent different types of energy. KE_rot represents the energy associated with rotational motion, while KE_tot represents the total energy of the system, including both translational motion and rotational motion.
In the case of the rigid rod connecting three particles, if the system is in rotational motion, the particles will have both translational and rotational motion. The translational motion of the particles contributes to the total kinetic energy of the system, while the rotational motion contributes to the rotational kinetic energy of the system.
In general, it can be said that KE_rot and KE_tot are related, but their values will depend on the specific details of the system, such as the masses of the particles, their distances from the axis of rotation, and the speed and direction of their motion.
It is not necessarily the case that the total rotational kinetic energy from (c) should be the same as the total kinetic energy of the system you calculated from (e), as the two represent different aspects of the energy of the system. However, in some specific cases, if the system is in pure rotational motion, the total rotational kinetic energy and the total kinetic energy of the system will be the same.
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80 POINTS!! Please show your though process. Picture is attached. Thank you!
The final kinetic energy of the block depends on the height of the ramp and mass of the block, also, final speed and mass of the block.
option B and D.
What is the final kinetic energy of the ball?
The final kinetic energy of the ball is determined by applying the principle of conservation of energy.
Neglecting friction and air drag, the initial potential energy of the block at the maximum height must be equal to the final kinetic energy of the block at the lowest point.
P.E = K.E
mgh = ¹/₂mv²
v = √ 2gh
where;
h is the height of the rampg is acceleration due to gravityKinetic energy depends on mass and velocity, since the mass is constant, the final velocity will depend on the height of the ramp.
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a block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of:
Answer:
B = buoyant force of water = (60 - 40) N = 20 N
S (specific gravity) = Weight object / Weight of water
S (water) = 1 gm/cc = 1000 kg/m^3
S (block) = 60 N / 20 N * 1000 kg/m^3 = 3000 kg/m^3
if i double the length, and halve the diameter of a copper wire, what is the value of its new resistance? original resistance was r0
The new resistance of the wire will be 4 times the original resistance (r0).
This is because the resistance of a wire is proportional to its length and inversely proportional to its cross-sectional area. Doubling the length of the wire will double its resistance. Halving the diameter of the wire will result in a reduction of its cross-sectional area by a factor of 4, which will result in an increase in its resistance by a factor of 4. The net effect is that the resistance of the wire will be 4 times the original resistance.
To be more precise, the resistance R of a wire is given by the equation
R = ρL / A
where ρ is the resistivity of the material, L is the length of the wire, and A is its cross-sectional area. So, if we double the length and halve the diameter, the new resistance will be given by
R = ρ(2L) / (A/4) = 4ρL / A = 4R0.
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a carpinter is pounding a nail into the wall the reaction force to the force of a hammer hitting a nail is
Newton's third law of movement expresses that the response power to the power of a hammer striking a nail is equivalent and inverse.
As indicated by this, there is an inverse and equivalent reaction to each activity. At the point when the hammer strikes the nail, the nail hits back with equivalent and inverse power.
The power that drives the nail into the wall is alluded to as the reaction force. The reaction power's course is the specific inverse of the applied power's heading.
As an outcome, the powers are adjusted and energy is moved from the hammer to the nail.
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you rub a balloon on your head, and the balloon gains a charge of 50 nc n c . how many electrons were transferred during this process?
Number of electrons transferred in this process are given by = 3.125 x 10^11 electrons
What is electron?The smallest elemental component of an atom, the electron has a negative charge. In a neutral atom, there are an equal number of electrons and protons. One electron but one proton are all that the hydrogen atom has. On the other hand hand, the uranium atom includes 92 protons, this means 92 electrons.
Given:
q = magnitude of charge gained by balloon = 50 nC = 50 x 10^-9 C
e = magnitude of charge on electron = 1.60 x 10^-19 C
When you rub balloon on your head, the electrons from your head migrate to balloon. As a result balloon becomes negatively charged and your head becomes positively charged.
We can compute the number of electrons transferred in the process as follows:
Let N = number of electrons transferred in this process = q / e
N = q / e = (50 x 10^-9 C) / (1.60 x 10^-19 C) = 3.125 x 10^11 electrons
N = 3.125 x 10^11 electrons [answer]
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a running back with a mass of 70 kg and a speed of 9 m/s collides with, and is held by, a 105-kg defensive tackle going in the opposite direction. how fast must the tackle be going before the collision for their speed afterward to be zero?
If a running back with a mass of 70 kg and a speed of 9 m/s collides , then speed of tackle before the collision is 6 m/s .
Let the speed of the defensive tackle before the collision be = v .
The momentum of the system before the collision is given by the momentum of the running back,
⇒ that is ; 70 × 9 = 630 Kgm/s , and
the momentum of the tackle is , (-105 kg) × (v m/s) ;
After the collision, the momentum of the system must be zero, so the momentum before the collision must equal the momentum after the collision ;
⇒ (70 × 9) + (-105 × v) = 0 ;
Solving for v, we get ;
⇒ v = 630/105 = 6 m/s
Therefore , the defensive tackle must be going 6 m/s in the opposite direction before the collision for the two players to come to a stop after the collision.
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Identifying Forces
For the following situations:
1) Draw a picture describing each situation
2) Write all of the forces acting on the underlined object (and include the direction that the force is acting in).
3) Draw an FBD for the underlined object.
A) Doughnut resting on a coffee table.
B) Football as it travels through the air (it's already been tossed).
C) A box sliding across concrete
D) A cat sitting on a rug
The free body diagram shows the forces that act on the object.
What is a free body diagram?We know that force is a vector quantity as such the direction of the force can also be seen to be very important and this is what have given rise to the idea of the free body diagram because it would show all the forces that have acted on the objects.
In effect, what we have been asked to do here is to draw the free body diagram of the system that is under study here. In this diagram all of the forces that is acting on each of the objects must be balanced.
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(ii) a person scuffing her feet on a wool rug on a dry day accumulates a net charge of -34 mc. how many excess electrons does she get, and by how much does her mass increase?
The person gets 34 million excess electrons but her mass does not increase.
What is the mass ?Mass is a measure of the amount of matter in an object. It is typically measured in kilograms (kg), though other units like grams (g) and pounds (lbs) are also used. Mass is different from weight, which is a measure of the force of gravity on an object. Mass is constant in all gravitational fields, while weight changes depending on the strength of the gravitational field.
The person scuffing her feet on the wool rug is accumulating a net charge of -34 mc (microcoulombs). This means that she is gaining 34 million electrons. However, this does not increase her mass, since electrons have a very small mass compared to the overall mass of a person.
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at least two forces are acting on you right now. what are these forces? describe the relationship between the size and direction of these two forces
According to Newton's third law of motion, For every action, there is an equal and opposite reaction.
If a body is pressed against another body with some force, the second body also presses the first body with an equal and opposite force. The force with which the first body presses the second is called the action force, while the force exerted by the second body on the first one is called the reaction force. Action and reaction forces always occur in pairs.
While sitting the forces acting on us are;
The force of gravity W=m g
The normal force $N$ applied by the chair.
The force 'mg' acts downward on the chair due to us, while the normal force '{N} ' applied by chair acts upward on us.
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what is social peace.
Answer:
Social peace is achieved when people have a strong two-way relationship with the state and other community groups, and they trust that decisions by the state are made fairly, even if they do not benefit from them directly.
Answer:
Social peace is a state of society in which there is no significant conflict or violence.
Explanation:
Social peace is a state of society in which there is no significant conflict or violence. It is characterized by a high degree of social harmony and cooperation, and by a lack of social unrest or instability.
Social peace is important for a number of reasons. It allows people to live and work together without fear of violence or intimidation. It also facilitates economic development and social progress. In addition, social peace can help to prevent the outbreak of war or other forms of large-scale violence.
There are a number of factors that can contribute to social peace. These include:
Good governance:There are a number of things that individuals can do to promote social peace. These include:
Be kind and respectful to others, regardless of their differences.Get involved in your community and work to solve problems together.Speak out against violence and injustice.Vote for leaders who promote peace and social justice.Social peace is not something that happens overnight. It takes time, effort, and commitment from everyone in society. However, it is an essential goal for any society that wants to live in peace and harmony.
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is the electric potential at point a higher than, lower than, or equal to the electric potential at point b ? explain.
The electric potential is a scalar quantity that depends on the distribution of charges and the geometry of the system. In general, the electric potential is defined as the amount of work required to bring a unit positive charge from infinity to a point in the electric field.
If there are more positive charges near point A than near point B, then the electric potential at point A would be higher than the electric potential at point B. Conversely, if there are more negative charges near point A than near point B, then the electric potential at point A would be lower than the electric potential at point B.
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if the object is moving horizontally and at the same constant speed of 0.1 m/s, a force must be exerted on it to maintain that motion. that means someone is doing work! calculate the work required to maintain the motion for 16 seconds.
The work required to maintain the motion for 16 seconds is 0.16 J.
work = force x distance
In this case, the distance is constant and equal to the horizontal distance covered in 16 seconds, which is 0.1 m/s x 16 s = 1.6 m.
The force required to maintain the horizontal motion at a constant speed is known as the frictional force, which is equal to the force of friction times the normal force. In this case, let's assume the frictional force is 0.1 N.
So the work done in maintaining the horizontal motion for 16 seconds would be:
work = force x distance = 0.1 N x 1.6 m = 0.16 J (joules)
Therefore, the work required to maintain the motion for 16 seconds is 0.16 J.
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the two plates of a capacitor hold and of charge, respectively, when the potential difference is 960 v. what is the capacitance?
When there is a potential difference of 960 volts, the capacitance of a capacitor's two plates is 2.6 F.
What is the difference in potential between two capacitor plates?
V = E d, or the electric field intensity times the distance between the plates, is used to express the electrical potential difference between the two plates. The final units in this expression are Joules/coulomb, which are obtained by multiplying Newtons/coulomb by meters.
What does a capacitor's two plates contain?
The capacitor has two plates: one with a positive charge Q and the other with a negative charge -Q. The potential difference V between the two plates is proportional to the charge Q on the plates. Q = CV, where C is the proportional constant.
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so how can we infer some of the properties of the solar system by the orderly motions? what about sizes?
Naturally, a falling gas cloud tends to heat it up, spin more quickly, and flat out as it gets smaller. Consequently, our solar system started as a rotating disc of gas.
What size is it?The dimensions are described by size. Example: Consider a box that is shaped like a cube. Its proportions, including length, width, and height, determine its size. Are length and height equivalent.
What is the duration?The measured distance between the two ends.
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On the way to work in the morning, a man drives five miles east to a gas station before heading another ten miles north to his office. Assuming he travels directly from work at the end of the day, what is the magnitude of the resultant displacement ‘C’?
The separation between two places of the an object in motion is known as displacement.Therefore, it depends on both the starting position and the ending position.Displacement is also the shortest distance between the initial and ultimate places.
How can the length traveled from position function be determined?We may determine the overall distance traveled from t = a to t = b by a body with location function s (t) when it moves along a coordinates line without changing direction.To get the overall distance traveled if the body changes course more than once throughout the journey, we must integrate the body's velocity |v (t)|.
10 meters: What does that mean?Greek prefixes are applied to units bigger than meters:A dekameter was 10 meters; the prefix deka- indicates "ten."Hectometers measure distances in units of 100 meters.A km is 1,000 meters, and the prefix kilo- denotes 1,000.
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