A ping-pong ball of mass 3.0 x 104 kg is hanging from a light thread 1.0 m long, between two vertical parallel plates 10 cm apart, as shown. When the potential difference across the plates is 420 V, the ball comes to equilibrium 1.0 cm to one side of its original position.
(a) What is the electric field intensity between the plates?
(b) What is the tension in the thread?
(c) What is the magnitude of the electric force deflecting the ball?
(d) What is the charge on the ball?​

Answers

Answer 1

a) To find the electric field intensity between the plates, we can use the formula:

Electric field intensity = potential difference / distance between plates

In this case, the potential difference is 420 V and the distance between the plates is 0.1 m (10 cm converted to meters).

Electric field intensity = 420V / 0.1m = 4200 N/C

b) To find the tension in the thread, we can use the formula:

Tension = weight of the ball + force of the electric field

The weight of the ball can be found using the formula:

Weight = mass x acceleration due to gravity

In this case, the mass of the ball is 3.0 x 10^4 kg and the acceleration due to gravity is 9.8 m/s^2.

Weight = 3.0 x 10^4 kg x 9.8 m/s^2 = 2.94 x 10^5 N

The force of the electric field can be found using the formula:

Force = electric field intensity x charge

The charge on the ball is not given, so we cannot find the force.

c) The magnitude of the electric force deflecting the ball can be found using the formula:

Force = Electric field intensity x Charge

As the Charge on the ball is not given it's impossible to calculate this value

d) The Charge on the ball is not provided in the problem statement and it's impossible to calculate it without additional information

It's worth noting that this scenario is a thought experiment, and that the presence of a thread would alter the scenario, as well as the fact that the charge is not provided.


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Several factors, like the river's magnitude, the slope of the terrain, and others, would affect how quickly the river would flow past contour lines.

How can contour lines convey a river's flow direction?

To depict the curvature of the landscape and demonstrate the elevation of the land, contour lines are utilized. The flow direction of a river can also be shown using contour lines. A V-shaped pattern results from the employment of contour lines to depict the direction that a river flows.

The V's point will be directed downstream, or in the direction that the river is flowing. Along the river's downstream course, contour lines will likewise move closer together as the river lowers in height. Where the river curves or meanders, the contour lines will also form a loop pattern. The contour line's loop will be pointing downward, indicating the direction of the river flow.

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What is the difference between dimension and dimension formula of a physical quantity?.

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Dimension of a physical quantity are the power to which the basic dimension are raised to quantify that quantity. On the other hand, dimension formula is how and which basic quantities are included to represent the magnitude of the quantity.

Lets say we have a physical quantity "work". As the unit of work is joule which is equal to the kg-m²/s². This is the dimension of the work. But its dimension formula will be [ML²T⁻²].

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What is weight class 8?.

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The Class 8 truck gross vehicle weight rating (GVWR) is a vehicle with a GVWR exceeding 33000 lb (14969 kg). These include tractor trailer tractors, single-unit dump trucks of a GVWR over 33,000 lb, as well as non-commercial chassis fire trucks; such trucks typically have 3 or more axles.

A motor boat traveling 5 m/s, East encounters a current traveling 2.5 m/s, North.

Answers

No one rated this answer yet — why not be the first?

BobbieRan

Expert

1.5K answers

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Answer

The relative velocity of the motor boat =5.59 m/s in 26.5° East south direction.

Time for the boat to travel shore-shore  = 16. sec

The distance traveled downstream is 40 m.

The Scenario Depicts about the Calculations of Relative Velocity

What is Relative Velocity?

When two objects A and B are thought of as moving at velocities Va and Vb relative to a shared fixed frame of reference, such as the ground, a bridge, or a fixed platform

The velocity of an object in relation to another observer is known as its relative velocity. It is the pace at which one object's relative location changes in relation to another object over time

V → = V A B → + V B C → Where. VAB is the velocity with respect to A and B, VBC is the velocity with respect to B and C and VAC is the velocity with respect to A and C.

Given,

A motorboat traveling 5 m/s, East.

encounters a current traveling 2.5 m/s, South.

the resultant velocity of the motor boat =  =5.59 m/s in 26.5° East south direction

time does it take the boat to travel shore to shore = 80/ 5

= 16. sec.

The distance traveled downstream is d = v • t = (2.5 m/s) • (16 s) = 40 m.

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PLEASE HELP RN
A projectile is shot horizontally off a cliff at a speed of 44 m/s. It hits the ground 2 seconds
later.
How high is the cliff, in meters?

Answers

Distance from the base to cliff does it land is 41.4m,

What is distance?Distance is a measurement of how far away two things or locations are, either numerically or occasionally qualitatively. Distance can refer to a physical length in physics or to an estimate based on other factors in common use.Distance is the sum of an object's movements, regardless of direction. Distance may be defined as the amount of space an item has covered, regardless of its beginning or finishing position.A span is any distance between two objects. These end points may be concrete, like the length of a rope between two trees, or they could be more ambiguous, like the interval between five and six o'clock in the morning.

Given data :

Let’s review the 4 basic kinematic equations of motion for constant acceleration (suggest you commit these to memory):

s = ut + ½at^2 …. (1)

v^2 = u^2 + 2as …. (2)

v = u + at …. (3)

s = (u + v)t/2 …. (4)

where s is distance, u is initial velocity, v is final velocity, a is acceleration and t is time.

First, we find the time taken by the projectile to drop 84m. From equation (1):

84 = 0 + 0.5(9.81)(t^2) so t = √(84/4.905) = 4.14s

Next, we find the distance travelled in 4.14s at 10m/s, which is:

Distance = 4.14*10 = 41.4m

Completed question :

A projectile is thrown horizontally off of a 84 m high cliff at 10 m/s. How far away from the base of the cliff does it land?

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7. From the choices below, select ALL that are results of radioactive decay.
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the nuclear capture of electrons

In what way does 5G improve on 4G in terms of connected users in a small space?.

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Yes, 5G outperforms 4G in terms of connected consumers in a constrained area. quickly connected and over a network. Undoubtedly, a 5G phone will function on a 4G network.

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What applications need low latency?.

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These are just a few examples of applications that require low latency. In general, any application that involves real-time communication or control will require low latency to function properly.

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If you add 20g of ice at 0 degree celciu to 180g of water at 20 degree celciu, what i the final temperature of the water a all of the ice melt?

Answers

The combined water and melted ice temperature is 31.15°C.

We can use the following formula:

q = m c T is used to calculate the final temperature of the water and melted ice, where:

q = added or lost heat

m = the substance's mass

c = the substance's specific heat capacity

T = temperature change

Finding the heat that the ice has taken away:

(20g) x (2.1 J/g°C) x (0 - (-20))°C = q

q = 8400 J

Identifying the heat gained by water:

(180g) x (4.18 J/g°C) x (T) = q

Taking the heat lost by ice and converting it to the heat gained by water

(180g) x (4.18 J/g°C) x (T) = 8400 J

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T = 8400 J/(180g x 4.18 J/g°C).

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Determine the relationship between the melting point of an impure substance to that of a pure substance. A.The melting point of the impure substance compared to the pure substance cannot be determined. B. The melting point of the impure substance would be the same as that of the pure substance. C. The melting point of the impure substance would be higher than that of the pure substance. D.The melting point of the impure substance would be lower than that of the pure substance.

Answers

The melting point of impure substance is slightly lower than the melting point of the pure substance.

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What is the magnitude of the vector 12i 8j 24k *?.

Answers

The 12i, 8j, and 24k vector's magnitude is 28.

A vector's length is considered to be its magnitude. The vector's absolute value or its modulus are other names for it. Using the Pythagorean theorem, we can determine a vector's magnitude.

A vector's magnitude, represented by the symbol |v|, is used to determine a vector's length. The distance between the vector's beginning point and endpoint is what this amount essentially represents. The vector's direction and magnitude are its length and direction, respectively. It only takes a few basic steps to calculate a vector's magnitude.

Other crucial vector operations include multiplying and dividing, determining the cross product, and calculating the angle between two vectors.

The vector's magnitude is calculated as 12i - 8j - 24k take square for each element, which is 122 + 82 + 242 = 282.

square root of 282 once more

Once you have this, the magnitude is 28.

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Correct Question:

What is the magnitude of the vector, 12i – 8j – 24k ?

What process is used to move molecules across a cell membrane to space where the concentration of the molecules is higher?.

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help needed fast, I'm not good at physics, look at picture below ( I posted another page aswell, take a look on my profile)​ part #2

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Answer:

I’d say the air outside the hemisphere is more free than from the inside of the hemisphere.

Explanation:

hope this help!

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According to his third law, there is a equal and opposite response to every force (activity) in nature. If object A applies a force to object B, b will respond with an equal and opposing force.

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Newton's Third Law illustration Everyday life is full of instances of Newton's third rule of motion. For instance, when you leap, the force from your legs pushing against the ground is balanced by the opposite reaction force from the earth, which lifts you into the air. When creating rockets and other projectiles, engineers use Newton's third law.

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The third law of movement by Newton states that equal but diametrically opposed energies always act in pairs. There is an opposite but equal reaction to every action, to put it another way. This means because when you push against a wall, the ceiling pushes back against you with an equal amount of force.

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What is the rate of change formula excel?.

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A rate of change is a rate that describes how one quantity changes in respect to another. rate of change=change in y change in x=change in distance change in time.

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A line's rate of change is the slope, the increase over run, or the change in over the change in. The slope may be determined using two points in a table or the slope triangle in a .

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What is magnitude of 2i 3j 4k?.

Answers

The magnitude of 2i 3j 4k is 5.38 unit.

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Magnitude is simply "distance or quantity" in physics. This representation can be used to show the motion of an item in absolute or relative terms, as well as its size change. It's a descriptive term for something's size or scope. Magnitude is a term used to describe length or size in physics.

To find the magnitude of a vector in three dimensional space, we can use this following formula:

∥a∥ = √ (x² + y² + z²)

In this case, we are given that:

X = 2, Y = 3, and Z = 4

Thus, the magnitude of the vector is:

∥a∥ = √ (2² + 3² + 4²)

∥a∥ = √29

∥a∥ = 5.38

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What factors increase momentum?.

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An object's momentum can be increased by increasing its mass or velocity. As can be seen, momentum is directly proportional to an object's mass and velocity. So either of the two can be increased to gain momentum.

What is momentum?

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Here,

The momentum of an object can be increased by increasing its mass or velocity. As can be seen, momentum is proportional to mass and velocity of an object. To gain momentum, either of the two can be increased.

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A scientist studying the Milky Way galaxy notices a bright light in the sky. What information would she need to prove that the object is a comet and not a star?


Does the object move?

Is there gas in the object?

How big is the object?

Are there other objects orbiting it?

(2 points)


II only


III only


I and II


I and III

Answers

A scientist studying the milky way galaxy notices a bright light in the sky, I and II provides information would she need to prove that the object is a comet and not a star.

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Ice, dust, and tiny rocks or particles are the main components of comets. They are included in the solar system because they orbit the sun.

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Describe how a person would use a drinking straw to draw liquids​

Answers

A drinking straw can be used to draw liquids by following these steps:

Take the drinking straw and place one end into the liquid you wish to drink.

Hold the other end of the straw with your mouth, making sure that your lips create a tight seal around the end of the straw.

Using your mouth, suck the air out of the straw. This action creates a vacuum in the straw which in turn pulls liquid up through the straw and into your mouth.

It's important to note that the drinking straw should be inserted into the liquid to a depth that keeps the liquid level above the end in your mouth to avoid sucking in air bubbles.

How do you find the magnitude and direction of displacement?.

Answers

Calculate the inverse tangent of the ratio of the displacement components in the y and x directions to determine the direction of the displacement vector. The magnitude of displacement is equal to the distance covered in a given interval of time if the particle moves at a constant or variable velocity in the same direction, because if it changes direction, the magnitude of displacement changes and does not remain equal to the distance covered.

A quantity with magnitude and direction must also follow certain combination rules in order to qualify as a vector. Vector addition, denoted symbolically as A + B = C, is one of these (vectors are conventionally written as boldface letters). Geometrically, the vector sum can be visualized by placing the tail of vector B at the head of vector A and drawing vector C so that it completes the triangle (starting from the tail of A and ending at the head of B). If A, B, and C are vectors, then it must be possible to reverse the operation and achieve the same result (C), B + A = C. This property (commutative law) is shared by quantities such as displacement and velocity, but there are some that do not (for example, finite rotations in a circle).

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What is the formula of torque Class 11?.

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T is equal to F r sin. T is a torque. the linear force F. r is the measurement of the distance between the spin axis to the point at which a linear force is applied. torque

What exactly does torque mean?

Torque is a twisted or twisting force that frequently results in rotation around in an axis, which may be a fixed point or the center of mass. The capacity of something spinning, such as a cog or a shafts, to resist turning resistance is another way to think of torque.

What does the word "torque" mean and what does it mean graphically?

Although a capital "T" is typically used to represent torque, the true sign is indeed the Greek letter omega, or "." The letter "M" is used to denote torque when it is alluded to as a second of force.

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A red cart ma = 2kg and a blue cart ma = 2 kg are ELASTICALLY crahed into each other at the indicated velocitie and bounce. After the colliion which cart will have the SMALLEST peed

Answers

The objects in an elastic collision split apart after impact while maintaining all of their kinetic energy. Kinetic energy, often known as the energy of motion, is discussed in more detail elsewhere.

How do you find the velocity of a bounce?

When the ball is not in contact with the ground, the formula h(t+t0)=v0t12gt2 determines the height at time t following the previous bounce at time t0. where v0 denotes the speed shortly before the bounce.

The mass of the red cart, m1, is equal to m1u1 + m2u2 = m1v1 + m2v2.

The blue cart has a mass of m2.

The red cart's starting speed is u1.

The blue cart's starting speed is u2.

The red cart's ultimate speed is v1.

The blue cart's ultimate speed is v2.

The final speed of each cart is determined by the formula: v1 = [m1u1 + m2u2 - m2v2] / m1

m1u1 + m2u2 - m1v1 = v2 / m2

As m1 = m2, our new equation is: v1 = u1 + u2 - v2.

v₂ = u₁ + u₂ - v₁

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Imagine you inherit a farm and now have to purchase fertilizer for the farm. The farm is 340 acres and had corn planted the previous year. You must add fertilizer to the soil before you plant this year's crop. You go to the local fertilizer store and find SuperPhosphate-brand fertilizer. You read the fertilizer bag and can recognize from your high school chemistry class a molecular formula C*a_{3}*P_{2}*H_{14}*S_{2}*O_{21} (you don't understand anything else written on the bag because it is imported fertilizer from Japan). You must decide how much fertilizer to buy for application to your cornfields. If each bag contains 25 kg of fertilizer and costs $54.73, how many bags of fertilizer must you purchase, and how much will it cost you to add the necessary fertilizer to your fields ?

Answers

Total Cost is =  $107,380 if The farm is 340 acres and had corn planted  add fertilizer to the soil before you plant this years' crop.

What is called fertilizer?

A fertiliser is a natural or artificial substance containing chemical elements (such as Nitrogen (N), Phosphorus (P) and Potassium (K)) that improve growth and productiveness of plants. Some synonyms include the terms "enrichment" or "plant nutrient".

Why is fertilizer important?

Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.

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the plates of a parallel-plate capacitor are connected to a battery. if the distance between the plates is halved, the energy of the capacitora. a. Increases by a factor of 4
b. Doubles
c. Remains the same
d. Is halved
e. Decreases by a factor of 4

Answers

A parallel-plate capacitor's energy is given as it is halved. in this case, Option C is correct.

Where are the capacitor battery's capacitance and emf?

a = U = 1 CUR

Capacitance is known to be equal to C and CRA. Capacitance = d = ac 2 Eu A = and the new capacitor's expat energy = U = clu2 = 2002 are calculated when the space between the plates is cut in half. 2 20 01 = 20. The energy of the capacitor doubles as a result.

Does the battery contain a capacitor?

A battery is an electronic device that transforms chemical energy into electrical energy to provide a static electrical charge for power, whereas a capacitor is an electronic component that stores electrostatic energy in an electric field.

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What is the relationship between speed and kinetic energy for kids?.

Answers

Answer:

they are kinda the same.

which layer is plastic-like and allows the crust to flow over it?

Answers

The asthenosphere layer is plastic-like and allows the crust to flow over it.

What is asthenosphere and its function?

Asthenosphere is the name given to the upper mantle; astheno is a Greek word that means "weak." Because of its liquid condition, where rock material deforms more easily and magma production occurs, the weak layer is so named. Below the lithosphere is the asthenosphere. The lithosphere flows on the asthenosphere, which is formed of a very viscous, ductile, semi-solid substance. It is around 440km thick and a solid with liquid-like characteristics. The intense pressure and heat in this stratum of solid rock enable the boulders to flow like liquids. The asthenosphere's rocks are less dense than the lithosphere's rocks. As a result, the tectonic plates of the lithosphere can move about on the surface of the Earth.

Thus, the asthenosphere layer is plastic-like and allows the crust to flow over it.

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Two charged objects are held 1 meter apart from each other. Then they are moved to 4 meters apart. How are the electrostatic force and gravitational force between them affected by this move?.

Answers

The electrostatic force and gravitational force will be one-sixteenth.

Gravitational force:  The force of attraction between any two bodies is

directly proportional to the product of their masses and is inversely proportional to the square of the distance between them.

Electrostatic force:  The force of attraction between any two charges is

directly proportional to the product of their masses and is inversely proportional to the square of the distance between them.

i.e. both the forces are inversely proportional to distance between them.

So, GF = EF ∝ [tex]\frac{1}{r^{2} }[/tex]

where r = distance between them.

When distance between objects are 1m , Both the forces are inversely proportional to 1.

When distance between objects are 4m , Both the forces are inversely proportional to 16.

So, the New forces becomes 1/16th of the original one.

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URGENT PLEASE HELP I NEED IT RN! THANKS7. Critique Reasoning Julio states that he can use the SAS Triangle CongruenceTheorem to prove that two right triangles are congruent. He constructs two righttriangles to have congruent hypotenuses and one set of congruent legs. What doesJulio need to do in order to use the SAS Triangle Congruence Theorem? Explain yourreasoning Which figure is a quadrilateral? An example of a food to avoid in a pre-game meal isO hot dogs.O spaghetti.O low-fat milk.O All of these food should be avoided. he usual way to obtain a prolonged effect of a drug is to take an additional dose when the first dose blank .multiple choice question.has gradual effectshas started to declineis yet to reach its maximum concentrationis yet to be metabolized by the liver Mrs. Jones, an appraiser, is appraising a single family residence for which she has located six closely comparable properties, all sold within the past six months. The subject property is rented for $1,500 per month. It is a custom-built home, approximately three years old. Mrs. Jones would probably give the most weight in her final estimate of value to which of the following appraisal methods?1 Cost approach2 Market data approach3 Income approach4 Gross rent multiplier a singing style that features a leader who is imitated by a group is called group of answer choices call and response. thematic development. ostinato. crossover. The Trojan Horse refers to an ancientincident in which Greeksoldiers hid inside a hugewooden horse given toTroy as a gift. Once insideTroy, the Greeks let therest of their army into thekingdom. Analyze PoliticalCartoons Why do you thinkthe New Deal is portrayedas a Trojan Horse? Which of the following are data recording tasks you may be asked to assist with during an assessment?A) ABC and scatterplot dataB) Data analysis and hypothesisC) Inter-observer agreement dataD) Both 1 and 3 Researchers report a reduction in mortality rates by 7-19% by eliminating even one serving of _____________ from your diet every day. Fill in the blank: A ______ has a clear outcome and a clearly-defined start and end date.A. communicationB. taskC. projectD. program T/F a peripheral nerve passes from the spinal cord into the limbs categorise of minerals When looked round the ship too and saw large furnace or copper boiling, and multitude of black people of every description chained together; every one of their countenances expressing dejection and sorrow, no longer doubted of my fate; and, quite overpowered with horror and anguish, fell motionless on the deck and fainted: What is the effect of the description in this sentence? It makes the reader curious about why Equiano does not want to be on the ship It gives Ihe reader sense of excitement and urges them t0 continue reading: It creates a feeling of certainty in the reader that mirrors what the author is describing: It allows the reader to perceive the apprehension and distress Equiano is feeling: Next 1. The population of the country Ghana was 24 658 823 in the year 2010. In the year 2020, Ghana Statistical Service gave an estimated number of people in the country Ghana a 31 072 940. a. Find the difference in the two data provided. b. Calculate the sum of the two data to the nearest thousand hundred. how do you add a picture of something you need help on? part a: design and conduct a simulation to estimate the likelihood that the professional golfer will sink at least four holes-in-one during a single game. be sure to explain the representations and show all the work for your trials and outcomes. (6 points) 12. Hydrology A reservoir has a capacity of 9000 cu ft. How long will it taketo fill the reservoir at the rate of 250 gallons per minute? if you ignored the probability weights and assumed the market conditions were equally probable, the mean demand would be 35,000 units and the standard deviation would be 25,100 units. Factors that affect the rate of a chemical reaction include which of the following? I. Frequency of collisions of reactant particles II. Kinetic energy of collisions of reactant particles III. Orientation of reactant particles during collisions a. I and Il only 0 b. I, Il, and Ill c. Il and IIl only d. Il only e. I and Ill only Solve:7x+5(x-1)=-5+12xplease show work!