. sketch a voltaic cell for each redox reaction. label the anode and cathode and indicate the half-reaction that occurs at each electrode and the species present in each solution. also indicate the direction of electron flow
Answers
The silver begins with a (+1) oxidation number and ends in its neutral condition of (0). Lead begins in its neutral state (0) and ends with an oxidation number of (+2). Lead is being oxidized while silver is being reduced. lead will serve as the anode and the silver node as the cathode.
2Ag+ (aq) + Pb (s) → 2Ag Pb2+
An atom would have a certain charge if all of its links to other atoms were fully ionic, which is known as its oxidation state or oxidation number. It describes how much an atom in a chemical compound has oxidized (lost electrons). The oxidation state might theoretically be zero, positive, or negative. Owing to the fact that many bonds in nature display high ionicity despite the absence of completely ionic bonds, the oxidation state is a good indicator of charge.
The formal charge on an atom, as well as any other actual atomic properties, are not represented by the oxidation state of that atom. This is especially true for high oxidation states, where the ionization energy needed to form a multiply positive ion is far higher than the energies present in chemical processes.
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Related Questions
2. the dipole moment of a dipole in a 300-n/c electric field is initially perpendicular to the field, but it rotates so it is in the same direction as the field. if the moment has a magnitude of 2 × 10−9 c · m, the work done by the field is:
Answers
Work Done (W) by the field is-6x 107 J,
What is Electric dipole?A pair of opposite, non-coplanar, equally powerful electric charges that are in opposition to one another. An atom is said to have a "induced electric dipole" if the center of the negative cloud of electrons has moved a little bit away from the nucleus due to an external electric field. When the external field is taken away, dipolarity is lost.
Electric field (E) = 300 N/C
Dipole moment (p) = 2 x 10° Cm
Solution:
From the formula we know.
U = -pE cosФ
Here,
p Denotes Dipole moment.
E Denotes Electric field.
Ф Denotes angle b/w them
Now, as given, firstly the dipole is perpendicular to the electric field, so
angle (Ф1) will be 90° and now the dipole is rotated such that they are in same
direction so the angle (Ф2) will be 0°
So, let's find Change in Potential energy which will be equal to the work done
by the electric field.
ΔU = Uf - Ui
ΔU = [-pE*cos Ф2] - [-pE *cos Ф1]
ΔU = [-pE*cos Ф2] + pE *cos Ф1
ΔU = pE * [cos Ф2+ cos Ф1]
Substituting the values,
ΔU = pE * [cos 0° + cos 90°]
ΔU = pE * (-1 +0)
ΔU = -pE
ΔU = -2x 10^-9 × 300
ΔU = 6 x 10^(-9+2)
ΔU = 6 x 10^-7
W = ΔU = -6 x 10^-7
W = - 6 x 10 7 J
Work Done (W) by the field is - 6 x 10-7 J.
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Ms. Kasper is in a panic. Her cat, Penny, is stuck in a tree and about to jump out. In order to save her cat, Ms. Kasper needs to run to the tree, 12 meters away. If it takes her cat, 3 seconds to fall, how fast would Ms. Kasper have to run to save her cat?
Answers
Answer:
Speed greater than 4 m/s
Explanation:
Given that Ms. Kasper is in a panic. Her cat, Penny, is stuck in a tree and about to jump out. In order to save her cat, Ms. Kasper needs to run to the tree, 12 meters away. If it takes her cat, 3 seconds to fall, how fast would Ms. Kasper have to run to save her cat?
The distance = 12 m
Time = 3s
Speed = distance/time
Speed = 12/3
Speed = 4 m/s
Ms Kasper must run at speed more than 4m/s for her to save the cat.
Two college students push a broken down, 711 kg car to a mechanic. If the first student pushes with a force of 638 N and the second student pushes with a force of 573 N, what is the magnitude of acceleration of the car?
Answers
The magnitude of acceleration of the car is 1.70 \(m/s^{2}\) .
Acceleration is the rate of change of velocity with respect to time.
Also it is the capacity of the vehicle to gain speed.Mass of the car = 711 kg
Force exerted by the Student 1 = \(F_1\) = 638 N
Force exerted by the Student 2 = \(F_2\) = 573 N
Total force exerted on the car = F = \(F_1\) + \(F_2\)
F = 638 + 573
F = 1,211 N
As we know that, Force is the product of mass and acceleration i.e.
F = m * a
\(a = \frac{F}{m}\)
a = \(\frac{1211}{711}\)
a = 1.70 \(m/s^{2}\)
The magnitude of acceleration of the car is 1.70 \(m/s^{2}\) to push it to a car mechanic.
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A 32 kg object has a momentum of 480 kg m/s northward. What is the
object's velocity?
O A. 15,360 m/s
B. 15 m/s
O C. 448 m/s
OD. 0.067 m/s
Answers
Answer:
B. 15 m/s
Explanation:
p = m × v
480 = 32 × v
32v = 480
v = 480/32
v = 15 m/s
Answer:
B. 15 m/s
Explanation:
P=MV
480=32×v
v=15m/s
State government approves a series of grants to fund job training. Which of the following is a negative externality? (5 points
Businesses would not necessarily increase hiring rates.
Economic recession would result in a backlog of applicants.
Money for conservation efforts would be eliminated.
The state would have to provide child care for parents in training.
Answers
None of the options listed is a negative externality. A negative externality is an unintended consequence of an economic activity that affects a third party who is not directly involved in the activity.
If I were to choose: Businesses would not necessarily increase hiring rates.
This could be considered a negative externality because the grant funding is intended to fund job training in order to increase employment opportunities, but if businesses do not increase their hiring rates despite having a pool of trained workers, then the intended benefit of the grant may not be fully realized. This could result in a loss of resources and a missed opportunity to address unemployment in the community.
What is elementary entities?
Answers
Answer:
Answer: Elementary Entities are any of several entities, such as electrons, neutrons, or protons, that are less complex than atoms and are regarded as the constituents of all matter.
A 3kg crab was moving at 1 m/s in the shore before the ride pushed him for 5 seconds. If his final speed was 3 m/s, what force did the tide push him with?
Answers
Answer:
\(1.2\; {\rm N}\), assuming that all other forces on this crab were balanced.
Explanation:
The impulse \(J\) on an object is equal to the change in momentum \(\Delta p\). In other words:
\(J = \Delta p\).
If the mass \(m\) of the object stays the same (as in the case of this question), the change in momentum can be rewritten as:
\(J = \Delta p = m\, \Delta v\), where \(\Delta v\) is the change in velocity.
Impulse is also equal to the net force on the object \(F_{\text{net}}\) times the duration \(\Delta t\) over which the force is applied:
\(J = F_{\text{net}}\, \Delta t\).
Equate the two expressions for \(J\) to obtain:
\(F_{\text{net}}\, \Delta t = m\, \Delta v\).
In this question:
\(\Delta t = 5\; {\rm s}\) is the duration over which the force was applied,\(m = 3\; {\rm kg}\) is the mass of the crab, and\(\Delta v = (3 - 1)\; {\rm m\cdot s^{-1}} = 2\; {\rm m\cdot s^{-1}}\) is the change in the velocity of the crab.Rearrange \(F_{\text{net}}\, \Delta t = m\, \Delta v\) and solve for the net force \(F_{\text{net}}\):
\(\begin{aligned}F_{\text{net}} &= \frac{m\, \Delta v}{\Delta t} \\ &= \frac{(3\; {\rm kg})\, (2\; {\rm m\cdot s^{-1}})}{5\; {\rm s}} \\ &= 1.2\; {\rm kg \cdot m\cdot s^{-2}} \\ &= 1.2\; {\rm N}\end{aligned}\).
Assuming that all other forces on this crab are balanced, the net force on the crab would be equal to the force from the tide. Hence, the tide would have pushed the crab with a force of \(1.2\; {\rm N}\).
A bra rod i 2m long at a certain temperature. What i it length for temperature rie of 100k,if the expanivity of bra i 18×10-6k-1
Answers
The length of brass rod after expansion is 2.0036m.
How to calculate length?By definition, the length increase is:
Delta L = Alpha L_0 Delta TΔL=αL
naΔT
where alpha = 18 times 10^{-6}K^{-1}α=18×10−6
K-1
is expansion, L0 = 2 ml
na=2m is the initial length and Delta T = 100KΔT=100K is the temperature change. How to get:
Delta L = 18 times 10^{-6}cdot 2cdot 100 = 3.6 times 10^{-3} = 0.0036mΔL=18×10
−6
⋅2⋅100=3.6×10
−3
= 0.0036 meters
So the final length is:
L = L0 + delta L = 2 m + 0.0036 m = 2.0036 ml = l
0
na
+ΔL=2m+0.0036m=2.0036m
Linear expansion is the rate of increase in length of a solid sample per unit rise in temperature. If the length of the sample increases from l1 to l2 as the temperature increases by θ°, the expansion (α) is given by
l2 = l1(1 + αθ). This relationship assumes that α is independent of temperature.
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A ball is launched from inside a cylindrical device that has been set on a frictionless incline and turned loose
What can be determined about where the ball will land ?
The ball will land back in the cylinder.
The ball will land behind the cylinder.
It depends on the mass of the ball.
The ball will land in front of the cylinder.
It cannot be determined.
Answers
The velocity of the ball in the forward direction is the same as the initial velocity with which it was launched.
A ball is launched from inside a cylindrical device that has been set on a frictionless incline and turned loose. What can be determined about where the ball will land?It can be determined that the ball will land in front of the cylinder.
This can be explained with the help of a few concepts of Physics. When an object moves on an incline without friction, then it can be divided into two components, which are: gravity and normal force.
Here, gravity is acting towards the center of the Earth, whereas the normal force is perpendicular to the incline. Let's suppose that the ball is launched with a certain velocity, which makes it move along the incline and get projected in the forward direction.
If we think of the motion of the ball from the observer's point of view who is standing on the incline, then the motion will appear to be parabolic. This is because the observer would see that the ball is moving forward with a constant velocity, but its vertical position keeps changing due to the effect of gravity.
However, from the observer's point of view who is standing in front of the cylinder, the motion of the ball will look like it is a projectile.
The velocity of the ball in the forward direction is the same as the initial velocity with which it was launched.
But, due to the effect of gravity, the vertical component of the velocity would change, which would result in a parabolic path of the ball. Therefore, the ball will land in front of the cylinder.
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The velocity of the ball in the forward direction is the same as the initial velocity with which it was launched. It can be determined that the ball will land in front of the cylinder. The correct option is The ball will land in front of the cylinder.
A ball is launched from inside a cylindrical device that has been set on a frictionless incline and turned loose. What can be determined about where the ball will land?It can be determined that the ball will land in front of the cylinder.
This can be explained with the help of a few concepts of Physics. When an object moves on an incline without friction, then it can be divided into two components, which are: gravity and normal force.
Here, gravity is acting towards the center of the Earth, whereas the normal force is perpendicular to the incline. Let's suppose that the ball is launched with a certain velocity, which makes it move along the incline and get projected in the forward direction.
If we think of the motion of the ball from the observer's point of view who is standing on the incline, then the motion will appear to be parabolic. This is because the observer would see that the ball is moving forward with a constant velocity, but its vertical position keeps changing due to the effect of gravity.
However, from the observer's point of view who is standing in front of the cylinder, the motion of the ball will look like it is a projectile.
The velocity of the ball in the forward direction is the same as the initial velocity with which it was launched.
But, due to the effect of gravity, the vertical component of the velocity would change, which would result in a parabolic path of the ball. Therefore, the ball will land in front of the cylinder.
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The displacement along the number line below is
a.) -6
b.) -3
c.) 0
d.) +3
e.) not shown
Answers
Answer:
d: +3
Explanation:
X1 is going +3 meters to arrive to X2. More scientifically -6+3= -3 which is the value of X2 which tells us that the correct answer is +3.
Choose the nonmetallic elements from the list. Check all that apply.
Yttrium
Oxygen
Boron
Polonium
Argon
Gallium
Carbon
Answers
Answer:
Oxygen, Argon, Carbon
edge2020
Answer:
carbon, oxygen, argon,
Explanation:
:)
Molly is investigating the change in the motion of an object. She kicks a soccer ball that Is sitting on a soccer field three times. Molly uses a device to measure the force of her kick, and changes the force of her kick each time. The data that she collected are shown in the table below.
Force of Kick
(N)
Distance Traveled (m)
150
31
200
39
270
47
In 6-10 sentences explain how Molly altering the force of her kicks altered the movement of the ball. You may discuss the experiment in terms of Newton's three laws of motion, acceleration and momentum, energy transfer, and /or conservation of energy. Be sure to use appropriate vocabulary in your explanation.
B
i
U
§
×.
x2
=
=
E
=트 트 41 x
Special Characters
Answers
Molly's experiment involved kicking a soccer ball with varying amounts of force and observing the resulting change in the ball's motion.
How does altering the force alter the movement of the ball?Newton's three laws of motion can help explain how the force of Molly's kicks affected the ball's movement.
Newton's first law of motion states that an object at rest will stay at rest and an object in motion will stay in motion with a constant velocity unless acted upon by an unbalanced force. In this experiment, the soccer ball was at rest before each kick, so the force of Molly's kicks acted as an unbalanced force, causing the ball to accelerate and move. The greater the force of her kick, the greater the acceleration and resulting distance the ball traveled.
Newton's second law of motion states that the acceleration of an object is directly proportional to the force applied and inversely proportional to its mass. In this case, the mass of the soccer ball remained constant, but the force of Molly's kicks varied. As a result, the acceleration of the ball was directly proportional to the force of her kick.
Finally, Newton's third law of motion states that for every action, there is an equal and opposite reaction. When Molly kicked the soccer ball, the ball exerted an equal and opposite force back on her foot, which is why she felt the impact of the kick.
Energy transfer also played a role in this experiment. When Molly kicked the ball, she transferred energy from her foot to the ball. The greater the force of her kick, the more energy was transferred to the ball, resulting in a greater distance traveled.
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The engine in a car has eight cylinders. Each cylinder is a right cylinder with a diameter of \( 1.951 \) in. and a height of 3 in. Find the total displacement (volume) of this engine. Use the \( \pi
Answers
The total displacement (volume) of the engine that has eight cylinders is approximately 71.6 cubic inches.
To find the total displacement (volume) of the engine that has eight cylinders, each cylinder is a right cylinder with a diameter of\(\(1.951\)\) inches and a height of 3 inches we will use the following formula;
Volume of cylinder = πr²h
Where r = radius of the cylinderh = height of the cylinderπ = 3.14
According to the question;The diameter of the cylinder, d = 1.951 inches
Radius of cylinder, r = ½ d= ½ × 1.951 = 0.9755 inches
The height of the cylinder, h = 3 inches
Volume of one cylinder = πr²h= π × (0.9755)² × 3≈ 8.95 cubic inches
The total displacement (volume) of the engine that has eight cylinders can be calculated as follows;
Total volume = volume of one cylinder × Number of cylinders= 8.95 × 8= 71.6 cubic inches
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What can you say about the effort force needed to lift an object using an ideal lever with a force advantage greater than 1?
Select one:
a. The effort force is the same as the lifting force.
b. The effort force is less than the lifting force.
c. The effort force is greater than the lifting force.
d. You have to use the formula to calculate the effort force.
Answers
When the effort force needed to lift an object using an ideal lever with a force advantage greater than 1, The effort force is less than the lifting force. The correct option is b.
What is force advantage?Force is the mechanical physical quantity. The force advantage is equivalent to the mechanical advantage equal to the ratio of output to the input force.
The force advantage is
F.A = lifting force / effort force
When the effort force is greater, FA is less than 1. When FA is greater than 1, definitely, the effort force is less.
Thus, the effort force is less than the lifting force. The correct option is b.
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There are two routes similar in terrain; however, one route has an incline of approximately 28 degrees, and you must decide on which route to take. what is the maximum road grade that your fully loaded ecv can climb?
Answers
We should chose the second route has inclination less than 28 because the car move easily on this route.
On which route you will move?I will chose the second route that has less inclination because on less incline route, the car move easily as compared to the route that have high inclination. The heavier ECVs when fully loaded, they are capable of climbing a grade of 40 percent which is about 22 degrees.
So we can conclude that we should chose the second route has inclination less than 28 because the car move easily on this route.
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The following answers for the Causes and Consequences features are examples and are not intended to represent a comprehensive list. In addition, the sequence of items is not meant to connote relative importance. Sort the examples below into the appropriate bin. Reset Help plastic debris, discarded nets, and other trash nutrient pollution from agricultural runoff reduction of fertilizer use in agriculture oil spills from non-point and point tightening of safety regulations for oil drilling and transport animals become entangled and die formation of dead zones sources birds and fish become coated with oil and die prevention of dumping and littering; pickup of trash from beaches Causes: Consequences: Solutions:
Answers
Causes and Consequences of pollution can be categorized into three bins: Causes, Consequences, and Solutions.
Causes: Plastic debris, discarded nets, nutrient pollution from agricultural runoff, oil spills from non-point and point sources.
Consequences: Animals become entangled and die, formation of dead zones, birds and fish become coated with oil and die.
Solutions: Reduction of fertilizer use in agriculture, tightening of safety regulations for oil drilling and transport, prevention of dumping and littering, pickup of trash from beaches.
Pollution has various causes such as plastic debris, discarded nets, nutrient pollution, and oil spills.
These lead to consequences like entanglement and death of animals, dead zones, and oil-coated birds and fish. Solutions include reducing fertilizer use, tightening safety regulations, and preventing dumping and littering.
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Question 5 Marks: 1 In the rectangular furnace, the grates are arranged inChoose one answer. a. arches b. rectangles c. tiers d. circles
Answers
In a rectangular furnace, the grates are typically arranged in rectangular shapes. Grates are horizontal bars or grids that are used in a furnace for supporting the fuel, such as wood, coal, or other combustible materials, during combustion.
Grates are arranged in a rectangular pattern to provide structural support and allow for efficient burning of the fuel. The rectangular arrangement of grates allows for even distribution of heat and combustion air, facilitating the combustion process in the furnace. Grates in a furnace serve multiple purposes. They support the fuel, such as wood or coal, allowing it to burn evenly and efficiently. They also provide spaces or gaps between the bars, which allow for the passage of air, oxygen, and combustion gases. This helps to regulate the airflow and maintain proper combustion conditions within the furnace.
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How does asexual reproduction provide an advantage to the organisms that live on a rotting log?
Answers
Answer:
Only one parent is needed, and it is faster than sexual reproduction.
Explanation:
Sorry I'm not the best at explaining it but that's the answer.
asexual reproduction provides an advantage to the organisms that live on a rotting log by generating huge number of creatures in a very short amount of time
What is asexual reproduction ?Asexual reproduction refers to a type of reproduction where a child is born to a single parent. The newly created people are clones of their parents since they have the same genetic makeup and physical characteristics.
Both multicellular and unicellular species can reproduce asexually. There will be no gamete fusion involved in this procedure, and the number of chromosomes will remain the same. With the exception of specific situations where there is a possibility that a rare mutation will occur, it will inherit the same genes as the parent.
The benefits of asexual reproduction are as follows:
There is no need for mates.Rapid reproduction is the norm.In a very short amount of time, a huge number of creatures can be created.Adaptive genetic factors are passed down across generations.It happens in a variety of environments.Learn more about reproduction, refer the link:
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A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible. How long does it take the ball to reach the maximum height?
Answers
Answer:
3 seconds
Explanation:
Applying,
Applying,
v = u±gt................ Equation 1
Where v = final velocity, u = initial velocity, t = time, g = acceleration due to gravity.
From the question,
Given: v = 0 m/s ( at the maximum height), u = 30 m/s
Constant: g = -10 m/s
Substitute these values into equation 1
0 = 30-10t
10t = 30
t = 30/10
t = 3 seconds
A circuit contains a 1. 5 volt battery and a bulb with a resistance of 3 ohms. Calculate the current
Answers
are forces present even when there is no movement?
Answers
Answer:
Yes, gravitational force is everywhere. Even if you don't move or move, or wherever you are, there is gravitational force.
A proton with kinetic energy T=10 MeV flies past a stationary free electron at a distance b=10 pm. Find the energy acquired by the electron, assuming the proton's trajectory to be rectilinear and the electron to be practically motionless as the proton flies by.
Answers
A proton with kinetic energy T=10 MeV flies past a stationary free electron at a distance b=10 pm. The energy acquired by the electron is 286 eV, assuming the proton's trajectory to be rectilinear and the electron to be practically motionless as the proton flies by.
To find the energy acquired by the electron, we can use the concept of Coulomb scattering. In this process, the proton and the electron interact via the electrostatic force, which transfers energy from the proton to the electron.
The maximum energy transferred to the electron (ΔE) can be found using the following formula:
ΔE = (2 * k * q1 * q2) / b
where k is the Coulomb constant (approximately 8.99 × 10^9 N m^2 C^−2), q1 and q2 are the charges of the proton and electron (1.6 × 10^-19 C each), and b is the impact parameter (10 pm or 10 × 10^-12 m).
Plugging the values into the formula, we get:
ΔE = (2 * 8.99 × 10^9 N m^2 C^−2 * (1.6 × 10^-19 C)^2) / (10 × 10^-12 m)
ΔE ≈ 4.58 × 10^-17 J
Now, to convert the energy into electron volts (eV), we can use the following conversion:
1 eV = 1.6 × 10^-19 J
ΔE ≈ (4.58 × 10^-17 J) / (1.6 × 10^-19 J/eV) ≈ 286 eV
So, the energy acquired by the electron is approximately 286 eV. This value is much smaller than the initial kinetic energy of the proton (10 MeV), confirming the assumption that the electron is practically motionless as the proton flies by.
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Sanjeev wants a rug for his room. Which SI unit is best for describing the area of his room?
Answers
Answer:
meters squared
Explanation:
A particle, of mass 6 kg, is in equilibrium on a rough horizontal plane under a force o-f magnitude T N, which acts at an angle 15° above the horizontal. Given the coefficient of friction between the particle and the rough horizontal plane is 0.35, what values could T take?
Answers
Answer:
T is less than or equal to 19 N
Explanation:
As important as it is to plan ahead,sometimes you
Answers
Answer:
B. Cant stop things from going wrong.
Explanation:
To me it's the only reasonable answer...
12. a) What is the gravitational attraction of the sun
on the earth? (b) of the earth on the sun?
Answers
Answer:
About 3.54x1022 N.
Explanation: The gravitational force between the Sun and the Earth is about 3.54x1022 N. This force keeps the Earth orbiting around the Sun. The gravitational force from the other planets does slightly affect the Earth's orbit, but the gravitational pull from the other planets and the Moon is still very small. Sorry if I get this wrong. I am in 5th grade! ♥
What planet has the hottest temperature
Answers
The planet with the hottest temperature is Venus.
In solar system, Venus is the second planet from the Sun and is often called Earth's sister planet due to their similar size and composition.
However, Venus has an extremely thick atmosphere made up of carbon dioxide and nitrogen, which causes a greenhouse effect that traps heat from the Sun.
This results in surface temperatures reaching up to 864 degrees Fahrenheit (462 degrees Celsius), making it the hottest planet in our solar system. Despite being closer to the Sun, Mercury, the first planet, does not have as high of a temperature due to its lack of an atmosphere to trap heat.
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A 60 kg gorilla named Anthony Falcon is standing on his skateboard. This is on planet Erf,
where a = g = -10m/s2
If Anthony Falcon has a weight of 600 N, with what amount of force is their body pushing
down on the skateboard with?
Answers
F= (600/-10) -10
F= 580n
At least I think that’s the answer
5. Two charged particles are separated by a distance of 12 meters. The Coulomb force between them is 20 N. What will the Coulomb force be if the same particles are
separated by a distance of 6 meters?
O A 80 N
OB. 40 N
O C. 10N
O D5N
Answers
Answer:
A) 80 N
Explanation:
The closer the particles get, the stronger the Coulomb force, which elongates choices C and D. The Coulomb force is inversely proportional to the distance squared. If the distance is cut in half, the force is multiplied by the reciprocal of (1/2)^2, which is 4. Multiplying it out, 20 times 4 is 80 N.
The Coulomb force if the same particles are separated by a distance of 6 meters is 222.221 N.
What is Coulomb Force?Coulomb force is also known as electrostatic force is the force of attraction or repulsion of particles or objects because of their electric charge. It is given by the formula,
\(F = k \dfrac{q_1q_2}{r^2}\)
Where
F = electric force
k = Coulomb constant = 8.9875517923×10⁹ kg⋅m³⋅s⁻²⋅C⁻²
\(q_1, q_2\) = charges
r = distance of separation
We know that the distance between the two particles is 12 meters while the force between the two particles is 20N, therefore, the Coulombs force can be written as,
\(F = k \dfrac{q_1q_2}{r^2}\\\\20 = k \dfrac{q_1q_2}{20^2}\\\\k {q_1q_2} = 20 \times 20^2\\\\k {q_1q_2} = 8000\)
Now, if the distance between the two particles is reduced to 6, the force will be,
\(F = k \dfrac{q_1q_2}{r^2}\\\\F = \dfrac{8000}{6^2}\\\\F = 222.221\rm\ N\)
Hence, the Coulomb force if the same particles are separated by a distance of 6 meters is 222.221 N.
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How much time is it required for a athlete to lift a 1200 Kg weights up 14m from the ground if he can only produce 9 Kw of power.
Answers
Given,
The mass is m=1200kg
Height is h=14 m
Power is P=9kW
We know
Energy per unit time is power.
Thus,
P=mgh/t
where t is the time.
Thus,
\(\begin{gathered} 9\times10^3=\frac{1200\times9.81\times14}{t} \\ \Rightarrow t=18.312 \end{gathered}\)The time is 18.312 sec.