What is the resultant velocity vector when you add your swimming velocity and the current velocity?.

Answers

Answer 1

The sum of an object's individual vector velocities is its final velocity. The scalar product of an object's mass and its acceleration vector is equal to the sum of its vector forces.

How is the resulting vector determined?

Formula 2: To get the resultant vector, subtract vectors moving in opposite directions from one another. R is the resulting vector because the vector B moves in the opposite direction of the vector A in this case.

How are two velocity vectors added?

As a result, we can directly use the equations v tot = v x 2 + v y 2 and v tot = v x 2 + v y 2 to perform the addition of the two velocities.

What is the formula for velocity vector?

Definition: Velocity. The velocity vector is the derivative of the position vector if r(t) is a differentiable vector-valued function that represents the particle's position vector at time t. v(t)=r′(t)=x′(t)ˆi+y′(t)ˆj+z′(t)ˆk.

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Related Questions

The fastest baseball pitch ever
recorded was by Aroldis
Chapman who threw a ball that
traveled 60 feet in 0.4 seconds.
What was the speed of the ball?

Answers

The speed of the ball thrown that traveled 60 feet in 0.4 seconds is 150ft/s.

How to calculate speed?

Speed is the rate of motion or action, specifically the magnitude of the velocity i.e. the rate distance is traversed in a given time.

Speed = distance moved (m) ÷ time taken (s)

According to this question, the fastest baseball pitch ever recorded was by Aroldis Chapman who threw a ball that traveled 60 feet in 0.4 seconds. The speed of the ball can be calculated thus;

Speed = 60feet ÷ 0.4s

Speed = 150ft/s

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If all the components of a vector are equal to 1, then that vector is a unit vector. True or False?

Answers

The statement is untrue since a vector is not a unit vector if all of its components are equal to 1.

Do all the elements of a unit vector have the value 1?

A unit vector is one with a magnitude of 1. It also goes by the name Direction Vector. Learn more about vectors here. Vector v = (1,3), for instance, is not a unit vector.

What is the unit vector's truth?

Since the denominator and numerator both have the same value, the unit vector has a magnitude of 1. Only direction exists in the unit vector. We are aware that a vector must have both magnitude and direction.

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Which of the following best describes the properties of a covalent compound ?

Answers

Answer:

The correct answer is C. Low melting point, tendency to share electrons, nonelectrolyte. Covalent compounds are formed by the sharing of electrons between two atoms and they have a low melting point and are non-electrolytes.

What is r in FG gm1m2 r2?.

Answers

Radius is considered as r in this formula. The gravitational force which try pulls two objects with masses m1 and m2 apart over a certain distance is represented by the equation F = G*m1*m2/r^2. G, which represents the universal gravitational constant.

The product of each object's individual mass determines the gravitational force between them. The square of one object's mass determines how much gravity will pull on the other. If their mass is raised by a factor of two, the gravitational force between the two objects is quadrupled.

The formula F = GMm /r^2 describes the dimensions of G as the gravitational force that pulls two objects with point masses of m1 and m2 toward one another, and r represents the distance between them.

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Does mass change with gravity?.

Answers

Yes, mass does change with gravity. The mass of an object is affected by the gravitational pull of the environment around it. The greater the gravitational pull, the higher the mass of the object.

This is because the object is being pulled closer to the source of gravity and thus its inertia increases, resulting in an increased mass. For example, if we were to compare two objects, one on the Earth’s surface and one on the Moon, the object on the Earth’s surface would be heavier due to the greater gravitational pull of the Earth. This is because the gravitational pull is stronger on the Earth than on the Moon, and thus the object on the Earth is being pulled closer to the source of gravity.

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What is the formula for torque and work?.

Answers

The dot product of the force and the displacement of the force point is used to calculate the amount of work done by force. In the case of angular motion, torque takes the place of force and angular displacement of linear displacement.

Typically, the product of r and F is used to represent torque.  τ = r × F = r F sinθ

The torque's work is equivalent to the body's change in rotational kinetic energy.

As you apply a force somewhere and move a distance, there is a connection between torque and work. Torque, however, is merely a proximate indicator of force.

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A golf ball increases its momentum by 6.75 kg m/s. The impact between the ball and club lasted for 0.0025 s. How much force acted on the ball from the club?

Answers

The force acted on the golf ball is 2,700N.

How to calculate force?

Momentum in physics is the tendency of a body to maintain its inertial motion i.e. the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

According to this question, a golf ball increases its momentum by 6.75 kgm/s. The impact between the ball and club lasted for 0.0025s.

Force is the rate at which momentum changes with respect to time i.e. (F = dp/dt).

Force = 6.75kgm/s ÷ 0.0025s

Force = 2,700N

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why is ultrasound monitoring of fetuses similar to mapping the seabed​

Answers

Answer:

Ultrasound monitoring of fetuses and mapping the seabed are similar in that they both use sonar technology to create images.

Explanation:

Ultrasound monitoring uses high-frequency sound waves to create images of the developing fetus inside the womb. The sound waves are sent out by a transducer and are reflected back to create an image of the fetus, similar to how sonar sends out sound waves and receives the echoes to create an image of the seabed.

Mapping the seabed uses sonar technology to create images of the seafloor. Sound waves are sent out by a transducer and are reflected back by the seafloor, creating an image of the seabed. The time it takes for the sound waves to return is used to determine the depth of the seafloor.

Both ultrasound monitoring and mapping the seabed use the principle of echolocation, which is the ability to locate objects by reflecting sound waves off them and measuring the time it takes for the echoes to return.

In summary, both ultrasound monitoring and mapping the seabed use sonar technology to create images by sending out sound waves and receiving echoes, which is the principle of echolocation.

Explanation:

both are actually using the principle of sonar basically involves sound waves ,bouncing doing waves and measuring effectively the echoes mm hmm for ultrasound well.

What are two examples of substances that move into or out of cells by diffusion?.

Answers

Examples of substances that can move into or out of the cell by diffusion are water, carbon dioxide, oxygen etc.

A substance tends to move from a high concentration area to a low concentration area during the diffusion process until its concentration is equal throughout a space.

Passive transport involves a substance diffusing down a concentration gradient across a membrane without the cell expending any energy. A concentration gradient is simply a region of space where the concentration of a substance changes, and substances will naturally move down gradients, from higher concentration to lower concentration.

Some molecules in cells can move down concentration gradients by directly crossing the lipid portion of the membrane, while others must pass through membrane proteins in a process known as facilitated diffusion.

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a neuron has a negative electrical charge of about 70 millivolts when it is

Answers

a neuron has a negative electrical charge of about 70 millivolts when it is

at rest. When a neuron is activated, its electrical charge changes to a positive charge of about 40 millivolts.

How many decibels dB will increase if the intensity of sound 100 times higher?.

Answers

Answer:100

Explanation:100 times is 100

what process introduced oxygen into the atmosphere?

Answers

Through photosynthesis process introduced oxygen into the atmosphere.

What is photosynthesis?

Jan Ingenhousz was a Dutch-born British physician and scientist who was most famous for discovering photosynthesis, the process by which green plants in sunlight absorb carbon dioxide and release oxygen. He was born on December 8, 1730, in Breda, the Netherlands, and died on September 7, 1799, in Bowood, Wiltshire, England. The process through which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis. The vast majority of life on Earth depends on photosynthesis to survive. It is how almost all of the biosphere's energy is made accessible to living beings.

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A person exerts a force on a box that is at rest on the Earth. The arrows
in the diagrams shown represent the direction of the applied force. Does
the gravitational potential energy of the box change in case A?

Answers

Gravity operates as the action force, pulling the book toward the table, and the normal force of the table, acting as the reaction force, pushing the book higher.

What is meant by gravitational potential energy?

A massive object's potential energy in relation to another massive object because of gravity is known as gravitational energy or gravitational potential energy. The energy that is released when the items fall toward one another is the potential energy associated with the gravitational field.

The potential energy associated with gravitational force is known as gravitational energy because it takes effort to lift items out of the gravitational pull of the Earth. Water in an elevated reservoir or kept behind a dam is evidence of gravitational potential energy, which is the potential energy resulting from elevated locations.

The book is being pulled toward the table by gravity, which acts as the action force, and is being pushed upward by the table's normal force, which acts as the reaction force.

When an object is present in a gravitational field, it has or can acquire gravitational potential energy, which is the energy that results from a change in position. Gravitational potential energy is an energy that is connected to gravitational force or gravity, to put it simply.

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A conductor of resistance 3 ohm is stretched uniformly till its length is doubled. The wire is now bent in the form of an equilateral triangle. The effective resistance between the ends of any side of the triangle in ohms is?
a) 9/2
b)8/3
c) 2
d)1​

Answers

Answer:

the correct answer is b 8/3

Please help of u can

Answers

Answer:

Explanation:

ME = GPE + KE

At the top of building all the mechanical energy is GPE because the ball isn't moving yet.  Just before it hits the ground, all the mechanical energy is KE because the GPE has decreased to 0 (h = 0 at ground level).

a.  Total E (top of bldg.) = mgh = (5 kg)(9.8 m/s²)(22 m) = 1078 J

b.  Total E (at ground) = 1/2mv² = 1/2(5 kg)(18 m/s)² = 810 m/s

c.  The energies are not the same because some of the energy is converted to thermal energy as they ball falls due to friction.

the angle of incidence is equal to the angle of reflection

Answers

Because the light beam chooses the shortest path to its destination, the angle of incidence equals the angle of reflection. Fermat's principle refers to this behaviour of light. When a light beam is reflected off a planar surface, it exhibits the same behaviour.

Is the angle of incidence always equal to the angle of reflection?

According to Fermat's theory of light behaviour, a light beam always chooses the shortest path to its target. At the point of reflection, the same behaviour is observed. The angle of incidence equals the angle of reflection when a ray is reflected from a plane.

Angle of incidence equals angle of reflection at a small surface area.

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A 89.3 kg man sits on the stern of a 5.8 m long boat. The prow of the boat touches the pier, but the boat isn’t tied. The man notices his mistake, stands up and walks to the boat’s prow, but by the time he reaches the prow, it’s moved 4.17 m away from the pier.
Assuming no water resistance to the boat’s motion, calculate the boat’s mass (not counting the man).
Answer in units of kg.

Answers

The mass of the boat is 124.2 kg.

What is the mass of the boat?

The mass of the boat is calculated by applying the principle of conservation of linear momentum as follows;

momentum of the man = momentum of the boat

m₁v₁ = m₂v₂

where;

m₁ is the mass of the manm₂ is the mass of the boatv₁ is the speed of the manv₂ is the speed of the boat

Since speed is directly proportional to distance, our new equation becomes;

m₁d₁ = m₂d₂

m₂ = ( m₁d₁ ) / ( d₂ )

m₂ = ( 89.3 x 5.8 ) / ( 4.17 )

m₂ = 124.2 kg

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What is the first velocity of the car with one washer at the 0. 25 m mark?.

Answers

First velocity of the car with one washer attached to a pulley is v1 = 0.25 m / t1, where t1 the average times the car took to reach the 0.25 m mark.

The velocity at time interval t = 0 is represented by the symbol u. It is the speed which shows that the motion has begun. There are four different initial velocity formulas: (1) If time, acceleration, and final velocity are given, the initial velocity is expressed as u = v - at.

The final velocity, on the other hand, is a vector quantity that determines the speed and direction of a body in motion after it has reached maximum acceleration.

The velocity of a body at any given time is known as instantaneous velocity. Average velocity is defined as total displacement divided by total time and can be calculated as v = x/t, where x is the total displacement of the body and t is the time. Because displacement can never be greater than the distance travelled, average velocity is always less than or equal to average speed.

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Which information does a student need to differentiate between the speed and the velocity of a vehicle in motion?
a. The rate of the motion
b. The direction of the motion
c. The change in the amount of motion
d. The amount of distance traveled during motion

Answers

An item can move, or can accelerate, slow down (decelerate), stop, or change direction as a result of the action of a force. It is possible to say that a force acting on an item causes that object to accelerate because any change in velocity is regarded as acceleration.

What knowledge is required for a pupil to distinguish between a moving object's speed and velocity?

Speed is the rate at which motion changes, or the distance that an item moves in a given amount of time, regardless of direction. Speed with regard to direction is defined as velocity. Velocity is a vector, whereas speed is a scalar.

In contrast to speed, which of the following best represents a velocity?

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path.

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PLEASE HELP!!!! An 85 kg snowboarder accidentally goes off trail and ends up in the middle of a frozen lake and comes to a stop. He remembers taking physics and learning about conservation of momentum in high school and decides to take off his 10 kg backpack
and throw it as hard as he can since he won't need it from being so smart for passing physics) at a speed of 6 m/s East. At what speed and direction will the snowboarder move after throwing the bag?

Answers

Explanation:

Okay, so the snowboarder weighs 85 kg and his backpack weighs 10 kg. He throws the backpack with a speed of 6 m/s to the East.According to the law of conservation of momentum, the total momentum before he throws the backpack is 85 kg * 0 m/s (since he's at rest) and the total momentum after he throws the backpack is 85 kg * x m/s + 10 kg * 6 m/s (since the backpack is moving East with a speed of 6 m/s).To find the snowboarder's new speed and direction, we have to set the total momentum before and after equal to each other and solve for x. So,85 kg * 0 m/s = 85 kg * x m/s + 10 kg * 6 m/sWe can solve for x by subtracting 10 kg * 6 m/s from both sides and dividing by 85 kg.x = -0.7143 m/sSo the snowboarder will move with a speed of -0.7143 m/s (which means he will move in the opposite direction of the backpack) and he will move west.

A 55-kilogram ice skater accelerates across a level ice surface at a constant rate of 0.75 meters per second squared. Determine the magnitude of the weight of the ice skater. Show all work, equations, & units.

Answers

The effective weight of the  ice skater is 497.75 N.

What is acceleration?

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

The effective weight of the  ice skater = mass × net acceleration

= 55 kg × (9.8 m/s² - 0.75 m/s²)

= 497.75 N.

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What are the three formulas of Newton's law of motion?.

Answers

Three formulas of newton's law of motion are:- a) v = u + at, b) S = ut +0.5at² c) v² = u² + 2as

Newton's first law of motion defines the relation between final velocity(v) of an object after some time(t), if the initial velocity of the object is u and acceleration is a.

v = u + at

Newton's second law of motion is used to determine the distance(S) travelled by an object in accelerated motion for time(t), having an initial velocity u.

S = ut +0.5at²

Newton's third law gives the relationship between, final, initial velocities, acceleration(a), and the distance(s) travelled by the object.

v² = u² + 2as

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What is the potential energy of an object weighing 10 kgs at a height of 10 Mtrs?.

Answers

The potential energy of the object is 980 Joule. The result is obtained by using the formula for potential energy.

What is potential energy?

Potential energy is the energy of an object due to its position.

The energy of an object in a gravitational field is called gravitational potential energy. It can be expressed as

U = mgh

Where

U = gravitational energym = massg = gravitational fieldh = height

An object has

Mass, m = 10 kgHeight, h = 10 m

Find the potential energy!

The Earth's gravitational field is g = 9.8 m/s².

Using the formula above, we get

U = mgh

U = 10 × 9.8 × 10

U = 980 Joule

Hence, the object has the potential energy of 980 Joule.

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What is the rate of change with respect to time Mcq?.

Answers

The rate of change (ROC) describes how rapidly something changes over time. It is hence the pace of change (rather than the amount of individual changes) that is important.

What types of data are continuous and take continuous values?

Continuous data is data that can have any value. Continuous data include height, weight, temperature, and length. Some continuous data will fluctuate over time, such as a baby's weight in its first year or the temperature in a room during the day.

A continuous variable is one that may take an uncountable or endless set of values.

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Please help with this problem

Answers

Mineralogically, barite is a sulfate, bornite is a sulfide, cuprite is an oxide, magnesite is a carbonate.

Which minerals fall under the main categories?Based on their chemical compositions, scientists divide minerals into groups. Nine major mineral classes were originally specified in the Dana Classification System: Native Elements, Sulfides, Sulfates, Halides, Oxides, Carbonates, Phosphates, Silicates, and Organic Minerals.There are four basic types of mineral formation: (1) igneous, or magmatic, when minerals form crystals from a melt, (2) Sedimentary, where minerals are produced by a process called sedimentation that uses fragments of other rocks that have suffered weathering or erosion as their raw material, and (3) Metamorphic.Mineralogically, barite is a sulfate, bornite is a sulfide, cuprite is an oxide, magnesite is a carbonate.          

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Among the mineral groups, barite is a sulfide mineral, bornite is a sulfide mineral, cuprite is an oxide mineral, and magnesite is a carbonate mineral.

What are the different mineral groups?Scientists mainly classifies the minerals based on their chemical compositions. The Dana Classification System originally defined nine major mineral classes: Native Elements, Sulfides, Sulfates, Halides, Oxides, Carbonates, Phosphates, Silicates, and Organic Minerals.There have been mainly four basic types of mineral formation: (1) igneous, or magmatic, in which minerals form crystals from a melt, (2) sedimentary, in which minerals are produced by a process called sedimentation, which uses fragments of other rocks that have weathered or been eroded as their raw material, and (3) metamorphic.Barite is a sulfate, bornite is a sulfide, cuprite is an oxide, and magnesite is a carbonate mineral.

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The tuning fork one please

Answers

The frequency of this wave is 15Hz. so, option (c) is correct. This indicates the size of the frequency is the turning fork vibrates 320 times every second.so, option (d) is correct.

What is frequency?

The number of waves that pass through a fixed location in a specific amount of time is known as frequency. As a result, if a wave travels for 1/2 second, the frequency is 2 per second.

What is wave?

A disturbance or variation that causes energy to gradually move from one point in a medium to another. It can be in the form of an elastic deformation or a change in pressure, electric or magnetic intensity, electric potential, or temperature.

Therefore, frequency of this wave is 15Hz. so, option (c) is correct. This indicates the size of the frequency is the turning fork vibrates 320 times every second.so, option (d) is correct.

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What is the magnitude of A =- 2i +2j 2k?.

Answers

The magnitude for A =- 2i +2j+2k is 2[tex]\sqrt{3}[/tex].

The definition of magnitude in physics is "distance or quantity," which is all there is to it. It displays the motion of an object in motion, including any absolute, relative, or specific sized movements. It can be used to define the size or scope of anything. In physics, the general term "magnitude" is used to describe size or distance.

A number called the magnitude of a force serves as a measure of its strength. Let's say there is a 10 N force coming from the east. "towards east" designates a direction, while "10" denotes the strength of the force. The "value" or "amount" of any physical quantity can be thought of as the magnitude, in other words.

= [tex]\sqrt{a^{2}+b^{2}+c^{2} }[/tex]

[tex]= \sqrt{2^{2}+2^{2} +2^{2} } \\= \sqrt{12} \\= 2\sqrt{3}[/tex]

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Correct Question:

What is the magnitude of A =- 2i +2j+2k?.

How do you convert kg to mass?.

Answers

1 kilogram (kg) is equal to 1000 grams (g).

Two small objects, with masses m and m, are originally a distance r apart, and the magnitude of the gravitational force on each one is f. the masses are changed to 2m and 2m, and the distance is changed to 4r. what is the magnitude of the new gravitational force?

Answers

The magnitude of the new gravitational force is F' = 32 F when the masses are changed to 2m and 2m, and the distance is changed to 4r.

The universal Gravitational Force can be formulated by, F = G M₁ M₂ / d²

As per the data we know that,

M₁ = m

M₂ = m

d₁ = r

F₁ = F

M₂ = 2m

d = (r/4)

F₂ = ?

i) Original force

F₁ = G (m)(m) / r² = G m² / r² = F

ii) Modified force

F₂ = G (m)(2m) / (r/4)² = G 2m² / (r² / 16) = 32 [Gm² / r²] = 32 F

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A peron trie to heat up her bath water by adding 5. 0 L of water at 95 C to 60 L of water at 20 C. What i the final temperature of the bath water

Answers

The water bath has a starting temperature of (18 0.5) °C and a finishing temperature of (40 0.3) °C, respectively.

What is the temperature of water bath? Your bath should be heated to a temperature of between 90° F and 105° F (32° C and 40° C), which is just above the usual body temperature.In a uniform enclosure with a fluid that is agitated, a temperature calibration bath can be set to a range of test temperatures. Baths offer superior thermal contact, homogeneity, and stability for temperature sensor calibration by utilising a stirred fluid (such as water, silicone oil, methanol, or ethanol).Since it means to heat liquids or chemicals, the water bath's purpose is obvious from its name. Its purpose is, to put it more plainly, to maintain a consistent temperature in the water for the microbiological analysis procedure of incubation. Between 30 and 100 degrees Celsius can be changed as the water bath's temperature.

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How does dweck address the what they say question in her talk 14. which one of the following accurately describes the force of gravity? a. the force of gravity is slightly lower at the bottom of a mountain than it is at the top. b. the gravity acceleration is in the same direction as the force of gravity, and thus away from the center of the earth. c. the gravity acceleration is in the same direction as the force of gravity, and thus toward the center of the earth. d. the gravity acceleration has no effect on a body moving in directly the opposite direction of the force of gravity. mark for review (will be highlighted on the review page) Please help!! I cant figure this out nursing research began with Florence Nightingale but developed slowly until its rapid acceleration in the 1950's. HOWEVER since the 1980's the focus for nursing has been on what? The power, P (watts), of a car engine is proportional to the square of its speed,s (m/s).When s= 25, P = 1400.Work out the speed (to 1 DP) when the power is 1820 wattsm/s if you file for bankruptcy which debts are forgiven? A paragraph about 5 things to change about the world Which of the following statements is FALSE?OA. Once you are in the maintenance stage of change, you still need tofocus on not doing the behavior again.OB. Once you decide you want to change, you still have to go through astep-by-step process before the change occurs.OC. You can help someone in the action stage by forcing them tomake their change.OD. The stages of change help us understand how we can best helpothers to change.SUBMIT Assume that 41. 1g of hydrogen peroxide decompose to produce oxygen gas at STP to the following balanced equation:2H2O2 (l) ---------> 2H2O(l) + O2 (g)How many Liters of oxygen gas are produced? What causes latency lag?. the mamluk regime gained great status among muslims when it During january 2016, wells corporation purchased $200,000 of inventory; they paid one-fourth in cash, and signed a note for the remaining balance. Indicate the appropriateness of the subject for a four- to six-page research paper by answering the following question. Is the following topic suitable for a research paper? why or why not? the history of my hometown's government from 1800 to 1900. multicellular organisms are composed of a variety of living structures that are formed when cells differentiate. how could the living structure pictured below be classified? State the domain and range for the following relation. Then determine whether the relation represents a function. {( -4,6), (-4,7), (6,5), (7,9)} The domain of the relation is __. (Use a comma to separate answers as needed.) The range of the relation is ___ (Use a comma to separate answers as needed.) Does the relation represent a function? Choose the correct answer below. A. The relation is a function because there are no ordered pairs with the same second element and different first elements. B. The relation is a function because there are no ordered pairs with the same first element and different second elements. C. The relation is not a function because there are ordered pairs with 5 as the second element and different first elements. D. The relation is not a function because there are ordered pairs with - 4 as the first element and different second elements. Uie buy 3 piece of pizza and 2 cookie for a total of 6. 50. The next day he buy 1 piece of pizza and 1 cookie for 2. 50. How much doe a cookie cot the native americans of the great plains were nomadic use resources to help you write a definition of the word nomad Determine whether the sequence converges or diverges. If it converges, find the limit. an=(1+2/n)^n Why do Della and Jim sacrifice their most important possessions?. PLEASE HELPPPPPP 100 POINTS!!!!!!!