what is the acceleration of a 38 kg crate being pushed horizontally by an 83 N force?

Answers

Answer 1

The magnitude of acceleration of the crate be 7.14 m/s².

What is acceleration?

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

Mass of the create be: m = 38kg.

Force applied on the create : F = 83N.

From Newton's second law of motion, we can write:

force = mass × acceleration

acceleration = force/mass = 38/83m/s² = 0.45 m/s².

Hence, acceleration of the create be 0.45 m/s².

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Related Questions

How many seconds would it take a Dalmatian to accelerate from rest to its
top speed of 16.5 m/s over a distance of 11 meters?

Answers

It take 1.33 second to a Dalmatian to accelerate from rest to its top speed.

What is acceleration?

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

given parameters:

initial speed, u = 0

final speed, v =16.5 m/s.

distance covered, s = 11 meters.

We have to find: time t = ?

We know that:

s = ut +(v-u)t/2

⇒ 11 = 0 + (16.5 -0)t/2

⇒ t = 22/16.5 second = 1.33 second.

So,  it take 1.33 second to a Dalmatian to accelerate from rest to its top speed.

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A sound pulse emitted underwater reflects off a school of fish and is detected at the same place 0.10 s later. How far away are the fish? (Assume the water temperature is 20 degrees C.)

Answers

The distance of the fish, given that a sound pulse was heard 0.10s later is 148.1 m

How do I determine the distance of the fish?

Speed is related to distance according to the following formula:

Speed = distance / time

Cross multiply

Distance = speed × time

Using the above formula, we can determine the distance of the fish. Details below:

Speed of sound in fresh water at 20 °C = 1481 m/sTime = 0.10 secondDistance of fish =?

Distance = speed × time

Distance = 1481 × 0.10

Distance = 148.1 m

Thus, we conclude that the distance of the fish is 148.1 m

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Use the drop-down menus to complete the sentences.

The first step in a bill becoming a law is for the bill to be
.

Next, the bill goes to
to be marked up, dropped, or sent to the floor.

After that, the bill is debated on the floor and can pass on a majority vote of
.

In the next stage, the bill must go to the
to repeat the process.

After the bill is resolved in the
, it goes to the president.

Answers

The first step towards a bill becoming a law is for the bill to be introduced in Congress.

Next, the bill goes to a committee to be marked up, dropped, or sent to the floor.

After that, the bill is debated on the floor and can pass with a majority vote of the house that sponsored it.

In the next stage, the bill must go to the other chamber, to repeat the process.

After the bill is resolved in the conference committee, it goes to the president.

What is the Congress?

The Congress is sometimes referred to as Senate and it can be defined as a deliberative assembly or council of elected citizens found in the upper chamber or house of a bicameral legislature.

This ultimately implies that, Congress is a federal legislative arm of government of the United States of America, which is saddled with the responsibility of enacting and passing federal laws and bills for the citizens, with the steps enumerated above.

Generally speaking, the first step of making bill to become a law is introducing it to the Congress while the last step is the resolution of a bill if it is voted in favor by at least 44 senators, and then it finally goes to the president for assent through his or her signature.

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Complete Question:

Use the drop down menus to complete the sentences.

The first step in a bill becoming a law is for the bill to be _____.

Next the bill goes to _____ to be marked up, dropped or sent to the floor.

After that, the bill is debated on the floor and can pass on a majority vote of ____.

In the next stage, the bill must go to the ____ to repeat the process.

After the bill is resolved in the ____, it goes to the president.

SECTION IV
QUESTION: 2. On the football field, a 95-kg halfback makes a turn. The halfback
sweeps out a path that is a portion of a 12-meter-radius circle. If in 2.1 seconds, the
halfback completes a quarter-circle turn. Determine the halfback's speed and
acceleration.

Pls solve this

Answers

Answer:

Speed = (2πr)/t = (2π x 12 m)/2.1 s = 28.6 m/s

Acceleration = (vf-vi)/t = (28.6 m/s - 0 m/s)/2.1 s = 13.6 m/s^2

No no no no. no no no no

Answers

No no no no. no no no no

A dryer uses electrical energy to spin a drum and produce heat. It uses 220 V of an electric charge and 50 A of electric current. What is the dryer power?

Answers

The power used by the dryer to spin the drum and produce heat is 11000 Watts.

What is the power of the dryer?

Power is simply the quantity of energy transferred per unit time.

This is expressed as;

P = v × I

Where v is voltage and I is current.

Given that;

Voltage v = 220VCurrent I = 50APower P = ?

Plug the given values into the above formula and solve for P.

P = v × I

P = 220V × 50A

P = 11000 Watts

Therefore, the power used by the dry is 11000 Watts.

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The moon's gravity is one-sixth that of the earth. How does the period of a 0.50m long pendulum on the moon compare to the period of the same pendulum on Earth?
Question 20 options:

The period is the same on the moon and on Earth.

The period on Earth is longer.

There isn't enough information to answer the question.

The period on the moon is longer.

Answers

The period on the moon is longer. So, the option(D) is correct.

What is a simple pendulum?

A basic pendulum is a machine in which the point mass is hung from a fixed support by a light, inextensible string. The mean position of a simple pendulum is shown by a vertical line flowing through a fixed support.

The length of the simple pendulum, abbreviated L, is the vertical distance between the point of suspension and the suspended body's center of mass (when it is in mean position). The resonant mechanism supporting this type of pendulum has a single resonant frequency.

Time period of a pendulum is given by: T = 2π√(l/g)

Where:  l =  length of the pendulum and g = acceleration due to gravity.

As the moon's gravity is one-sixth that of the earth, we can conclude from the expression of pendulum that  the period on the moon is longer.

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Are the results of the investigation described below valid? If not, what should the scientists do next? Explain your reasoning.

Passage A scientist wrote a report that communicates the steps he performed in an investigation, the data he gathered, and his conclusions. A second scientist used the report to carry out the same investigation. However, her results were very different.

Answers

In the case described above, there are at least three possible scenarios:

The first research  or experiment was correct but wrongly documentedThe first experiment  was correct and correctly documented; andThe second research was not properly executed according to the documentation of the first researcher.

In any of the above cases, the correct step to take, if it is possible is for both scientists to meet, review notes and jointly execute a third investigation. This is because, in science, the guesswork only happens during hypothesis formulation.

Once a principle has been established via experimentation and properly documented, the same research can be replicated in any other location by any other person with the end results being the same if they all follow the exact report documented when the investigation was deemed successful.

What are the procedures for carrying out an experiment?

Specify the hypothesis to be tested.Create a context.Create a theoretical modelCreate the experimentBuild the experiment.Examine the experimental equipmentPerform preliminary testsCarry out the experiment.The experiment should be cleaned up.Analyze the data, including statistical tests.Make notes on the experiment and draw conclusions.

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31. Box A of mass m sits on the floor of an elevator, with box B of mass 2 m on top of it, as shown in the figure above. The elevator is moving upward and slowing down. F_A is the magnitude of the force exerted on box A by box B, F_B is the magnitude of the force exerted on box B by box A, and F_g is the magnitude of the gravitational force exerted on box B. Which of the following ranks the forces in order of increasing magnitude?
(A) F_B=F_A=F_g
(B) (F_B=F_A) (C) F_B<(F_A=F_g)
(D) F_g

Answers

The rank of the forces in order of increasing magnitude is Fg < FB < FA.

option D is the correct answer.

What is the net force on elevator moving upwards?

The net force on an elevator moving upwards is determined by the force of gravity acting downwards and the normal force of the elevator acting upwards.

That is, the two forces acting on a person when he is moving in an elevator are:

the force of gravity and the normal force by the elevator.

When the two forces are of equal magnitude, the elevator will be static or moving with constant velocity.

When the magnitude of the two force are unequal, then the elevator will be accelerating upward or downward.

Since the elevator is moving upwards, it implies that the normal force is greater than the force of gravity acting downwards.

the normal force = FB + FAForce of gravity = Fg

The box at the bottom will feel much heavier due to the weight of box and gravity acting downwards.

FA = FB + Fg

Thus, the force exerted on box A is the greatest, followed by the force on box B and then, the smallest is force of gravity.

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A frozen salmon is sliding across the sea in ice in the +X^ direction. A hungry polar bear does -40J of the work and stops the salmon. If the polar bear applied its force over 0.5m, what force did it apply (include direction)?

Answers

A hungry polar bear does -40J of the work and stops the salmon. If the polar bear applied its force over 0.5m. The force is 80 Newton.

What is Force?

A force is an effect that can alter an object's motion according to physics. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe force is as a push or a pull.

A force is a vector quantity since it has both magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F. (formerly P).

The net force acting on an object is equal to the rate at which its momentum varies over time, according to Newton's second law in its original formulation. This law says that an object's acceleration is constant if the object's mass is constant.

Therefore,  A hungry polar bear does -40J of the work and stops the salmon. If the polar bear applied its force over 0.5m. The force is 80 Newton.

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You measure the period of a pendulum and get 25s. What is the length of the pendulum?

Answers

Answer:

Explanation:

T = 25 s

25 = 2*pi*sqrt(L/9.8)

L = 155.14 m

The net force acting on Mrs. Cosce 1,500 kg car is 12,000 N. What is the acceration of her car?

Answers

Answer: 8.0 m/s2

Explanation:

F = ma

a = F/m

F = 12,000 N

m = 1,500 kg

a = 12,000 N / 1,500 kg = 8.0 m/s2

A bus slows down from 8.22 m/s to a stop in 13.3 s. Its wheels have a radius of 0.530 m. Find the initial angular speed of the wheels.

Answers

Answer:

The initial angular velocity of the bus wheel:

ω₀  ≈ 15.6 rad / s

Explanation:

Given:

V₀ = 8.22 m/s - Starting speed of the bus

V= 0 m/s - Final speed of the bus (the bus has stopped)

ω = 0 rad/c - Final angular velocity of the bus wheel

t = 13.3 s - Bus deceleration time

R = 0.530 m - Bus wheel radius

____________________

ω₀ - ?  - The initial angular speed of the wheels.

1) Bus linear acceleration module:

a = ( V₀ - V) / t = (8.22 - 0) / 13.3 ≈ 0.62 m/s²

2) Bus angular accelerations module:

ε = a / R = 0.62 / 0.530 ≈ 1.17 rad / s²

3) The initial angular velocity of the bus wheel:

ω₀ = ε·t  = 1.17·13.3 ≈ 15.6 rad / s

What is the biggest agent of erosion?

a tornadoes
b pollution
c gravity
d water

Answers

Answer:

D - Water

Explanation:

The correct answer would be


D or A

If the potential energy is 2000 J with a mass of 7 kg, what is the height of the object?​

Answers

Answer: Height of object = 29.13475

Hope this helps!

Answer: 29.12 Meters.

Explanation:

Potential energy = Mass * Gravity * Height. | (P=mgh)Rearrange the equation for height:  H=(p/(g*m))Place the values: H=(2000J)/(9.81 * 7kg)Answer equals 29.12M

There are 100 g of lodine-131. After 16 days, how many grams of lodine-131 is left?

Answers

Answer:

25g

Explanation:

According to a quick internet search, the half-life of I-131 is 8 days.

The amount left after 16 days can be calculated with the radioactive exponential decay formula:

[tex]A_(_t_)=A_0e^(^\frac{\ln(.5)}{T}^)^t[/tex]

Where:

[tex]A_(_t_)[/tex] = the amount left as a function of time

[tex]A_0[/tex] = the original amount (100g)

T = the half-life of the isotope (8d)

t = time (16d)

So:

[tex]A_(_t_)=A_0e^(^\frac{\ln(0.5)}{T}^)^t\\A_(_t_)=(100g)e^(^\frac{\ln(0.5)}{8d}^)^(^1^6^d^)\\A_(_t_)=(100g)e^-^2^(^\ln(2))[/tex]

[tex]A_(_t_)=25g[/tex]

This answer is intuitive because the isotope has been through two half-lives:

[tex]100g(\frac{1}{2})(\frac{1}{2})=25g[/tex]

3. A beach ball is inflated to a volume of 25L of air at 15°C. During the afternoon,
the volume increases by 1L. What is the new temperature outside?

Answers

Answer:

Below

Explanation:

P1V1/T1  = P2V2/T2        T MUST be in Kelvin

                                         P1 = P2   so this becomes

V1/T1 = V2/T2

25/ (273.15 + 15) = 26 / (273.15 + X)         where 'X' is the °C afternoon temp

X = 26.5 °C

A pencil rolls across a table toward its edge. In one to two sentences, explain which direction the pencil will move once it leaves the table and why.

Answers

Answer:

it won't move unless it has momentum

Explanation:

heat flow occurs between two bodies in thermal contact. which property determines the direciton of heat flow

Answers

When two items with different temperatures come in contact with one another, energy moves from the hotter (higher temperature) object to the cooler (lower temperature) object until both objects reach the same temperature.

What is thermal contact?

Once the temperatures are identical, there is no net heat transfer since the quantity of heat transported from one object to the next and the amount of heat radiated are equal.

Temperature change is one of the main consequences of heat transfer: Cooling brings down the temperature while heating brings it up.

Experiments reveal that three factors—the change in the substance's temperature, its mass, and specific physical characteristics associated to the substance—have an impact on how much heat is transported to or from a substance.

Therefore, When two items with different temperatures come in contact with one another, energy moves from the hotter (higher temperature) object to the cooler (lower temperature) object until both objects reach the same temperature.

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Once the hydrogen in the core of a star runs out, what element does the star begin to fuse
next?

Answers

Once the hydrogen in the core of a star runs out,  then the element, Helium begins to fuse.

Helium begins to fuse, once the core of a star runs out, as helium is then, the only lightest element left in the core of the star.

The energy produced in the fusion processes decreases, as heavier and heavier element starts to fuse. Stars become the main sequence stars after they fuse hydrogen.

Once the hydrogen in the core runs out,  the stars could not hold against gravity more, thereby increasing the pressure and temperature in the core of the star.

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The rate of decay of a radioactive sample is given by R1 at time t1 and R2 at a later time t2 . The mean life of this radioactive sample is:​

Answers

Hope this answer helps you

A 5kg block is pulled across a table by a horizontal force of 40 N with a frictional 8N opposing the motion. Calculate the acceleration of the object

Answers

Answer:

[tex]\huge\boxed{\sf a = 6.4 \ m/s^2}[/tex]

Explanation:

Given Data:

Horizontal Force = 40 N

Frictional Force = 8 N

Mass = m = 5 kg

Required:

Acceleration = a = ?

Formula:

[tex]\displaystyle a =\frac{F}{m}[/tex]

Solution:

Since frictional force is opposing force, the resultant force will be horizontal force minus frictional force.

So,

Force = Horizontal force - Frictional force

Force = 40 - 8

Force = 32 N

So,

[tex]\displaystyle a = \frac{F}{m} \\\\a =\frac{32}{5} \\\\a = 6.4 \ m/s^2\\\\\rule[225]{225}{2}[/tex]

Expert help me i will mark the brainliest​

Answers

Floods are the most common type of natural disaster, occurring when an overflow of water submerges normally dry land.

What is flood about?

Floods are frequently caused in coastal areas by heavy rainfall, rapid snowmelt, or a storm surge from a tropical cyclone or tsunami.

Flooding has a negative impact on people's lives. Damage to property and infrastructure Road closures, erosion, and landslides are all possible.

It leads to destruction of houses and properties.

In order to control flooding, it is important to clear the gutters and have an adequate channel for water to pass.

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3. A bald eagle in level flight at a height of 135m drops the fish it caught. If the eagle's
speed is 25.0 m/s how far from the drop point will the fish land?

Answers

The horizontal distance travelled by the fish when dropped is 131.25 m.

What is the time of motion of the fish?

The time of motion of the fish from the given height is calculated by applying the following kinematic equation as shown below.

h = vt + ¹/₂gt²

where;

v is the initial vertical velocity = 0t is the time of motion'g is acceleration due to gravity

h = 0 + ¹/₂gt²

t = √ ( 2h / g )

t = √ ( 2 x 135 / 9.8 )

t = 5.25 seconds

The horizontal distance travelled by the fish when dropped is calculated as;

X = vt

X = 25 m/s  x  5.25 s

X = 131.25 m

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A space probe of mass 1,000 kg is launched to Jupiter. How much would it weigh once at Jupiter? (Assume Jupiter's gravitational acceleration to be 24.79 m/s².)
View Available Hint(s) for Part A
A space probe of mass 1,000 kg is launched to Jupiter. How much would it weigh once at Jupiter? (Assume Jupiter's gravitational acceleration to be 24.79 m/s².)
24,790 N
10,000 N
1,000 N
247.9 N

Answers

The weight of the space probe of mass 1000 kg is 24790 N.

What is weight?

Weight is the product of mass and gravitational acceleration

To calculate the weight of the Jupiter, we use the formula below.

Formula:

W = mg............. Equation 1

Where:

W = Weight of the space probem = Mass of the Space probeg = Acceleration due to gravity of Jupiter

From the question,

Given:

m = 1000 kgg = 24.79 m/s²

Substitute these values into equation 1

W = 1000×24.79W = 24790 N

Hence, The weight of the space probe is 24790 N.

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Only the first problem below please thank you so much

Answers

The initial speed of the second ball is c. 26.8 m/s

What is speed?

Speed is the distance per unit time moved by an object/

How to find the initial speed of the ball?

Since the ball is a projectile, to find the initial speed of the second ball, we need to find the maximum height of the first ball using

h = u²sin²Ф/2g where

u = initial velocity of ball = 32 m/s, Ф = angle of projection = 57° and g = acceleration due to gravity = 9.8 m/s²

Substituting the values of the variables into the equation, we have

h = u²sin²Ф/2g

h = (32 m/s)²× (sin57°)²/(2 × 9.8 m/s²)

h = 1024 m²/s²× (0.8387)²/(19.6 m/s²)

h = 1024 m²/s²× (0.7034)/(19.6 m/s²)

h = 720.249 m²/s²/(19.6 m/s²)

h = 36.75 m

Now, since a second projectile is thrown vertically to the same maximum height, we need to find its initial speed.

Using the equation of motion v² = u² - 2gh where

u = initial speed, v = speed at maximum height = 0 m.s, g = acceleration due to gravity = 9.8 m/s² and h = maximum height = 36.75 m

Making u subject of the formula, we have

u = √(v² + 2gh)

Substituting the values of the variables into the equation, we have

u = √(v² + 2gh)

u = √[(0 m/s)² + 2 × 9.8 m/s² × 36.75 m]

u = √[0 m²/s² + 19.6 m/s² × 36.75 m]

u = √[720.3 m²/s²]

u = 26.84 m/s

u ≅ 26.8 m/s

So, the initial speed of the second ball is c. 26.8 m/s

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The reasoning developed for counting microstates applies to many other situations involving probability. For example, if you flip a coin 5 times, how many different sequences of 3 heads and 2 tails are possible? Answer: 10 different sequences, such as HTHHT or TTHHH. In contrast, how many different sequences of 5 heads and 0 tails are possible? Obviously only one, HHHHH, and our equation gives 5!/[5!0!]=1, using the standard definition that 0! is defined to equal 1 If the coin is equally likely on a single throw to come up heads or tails, any specific sequence like HTHHT or HHHHH is equally likely. However, there is only one way to get HHHHH, while there are 10 ways to get 3 heads and 2 tails, so this is 10 times more probable than getting all heads. Use the expression 5!|[N!(5−N)!] to calculate the number of ways to get 0 heads, 1 head, 2 heads, 3 heads, 4 heads, or 5 heads in a sequence of 5 coin tosses. Make a graph of the number of ways vs. the number of heads.

Answers

Answer:

Explanation:

10 different sequences

A 12 kg chair initially at rest on a horizontal floor requires a 112 N horizontal force to set it in motion.

Calculate the coefficient of static friction.

Round your answer to two decimal places (the hundredth place). You do not need to include units.

Answers

Explanation:

0.98

The coefficient of static friction is calculated by dividing the force required to set the chair in motion (112 N) by the weight of the chair (12 kg). This gives us 112/12 = 9.3. The coefficient of static friction is equal to the ratio of the force required to set the chair in motion to the weight of the chair, so 9.3/9.8 = 0.98.

Two crates, 10 kg and 15 kg respectively, are connected with a thick rope according to the diagram. A force, to the right, of 500 N is applied. The boxes move with an acceleration of 2 m/s^2 to the right. One third of the total frictional force is acting on the 10 kg block and two thirds on the 15 kg block. Calculate: the magnitude and direction of the total frictional force present.

Answers

Explanation:

Total frictional force = 500 N

Magnitude of frictional force on 10 kg block = 500 N/3 = 166.67 N

Magnitude of frictional force on 15 kg block = 500 N/3 x 2 = 333.33 N

Direction of frictional force on 10 kg block = Left

Direction of frictional force on 15 kg block = Left

A gardener is driving a lawnmower with a force of 80N that makes an angle of 40° degree with the ground find its horizontal component

Answers

The horizontal component of force be 61.28 N.

What is force?

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

Given that:

A gardener is driving a lawnmower with a force of 80N that makes an angle of 40° degree with the ground.

So, horizontal component of force be = 80 cos40° N = 61.28 N.

Hence, the horizontal component of force be 61.28 N.

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a recipe for vanilla cake calls for 2 cups of sugar for every 4 eggs. what is the ratio of sugar to egg? song corp's stock price at the end of last year was $26.25 and its earnings per share for the year were $1.30. what was its p/e ratio? song corp's stock price at the end of last year was $26.25 and its earnings per share for the year were $1.30. what was its p/e ratio? 19.79 17.37 20.19 16.36 22.01 a. number of employee hours devoted to volunteering at habitat for humanity community perspective part 2 b. packaging use ratio, defined as grams of materials used per liter of product produced Suppose country A is labor- abundant and capital-scarce and country B is labor-scarce and capital-abundant .Good X is produced using labor intensive technology and good Y is produced using a capital- intensive technology. Which of the following can most reasonably be inferred from the given information?a. Country A would export good Xb. Country B would import good Yc. 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Mexico refused Germany's offer. your company uses windows autopilot to configure the computer settings of computers issued to users. a user named user1 has a computer named computer1 that runs windows 10. user1 leaves the company. you plan to transfer the computer to a user named user2. you need to ensure that when user2 first starts the computer, user2 is prompted to select the language setting and to agree to the license agreement. solution: you create a new windows autopilot self-deploying deployment profile. does this meet the goal the nurse is preparing a client for discharge who will receive a prescription for a hydroxymethylglutaryl-coenzyme a (hmg-coa) inhibitor. what statement by the client demonstrates a clear understanding of the teaching provided by the nurse? how does the long-run equilibrium for a monopolistically competitive market differ from the long-run equilibrium for a perfectly competitive market? part 2 one way in which monopolistically competitive markets and perfectly competitive markets differ is that in long-run equilibrium, monopolistically competitive firms part 3 a. charge a price marginal revenue. b. . c. produce at minimum marginal cost. d. produce where marginal revenue is marginal cost. e. do not earn zero economic profits. three points are chosen randomly and independently on a circle. what is the probability that all three pairwise distances between the points are less than the radius of the circle? Which of the following statements is FALSE?A) Beta represents the amount by which risks that affect the overall market are amplified for a given stock or investment.B) Beta is the expected percent change in the excess return of the security for a 1% change in the excess return of the market portfolio.C) Beta measures the diversifiable risk of a security, as opposed to its market risk, and is the appropriate measure of the risk of a security for an investor holding the market portfolio.D) It is common practice to estimate beta based on the historical correlation and volatilities. A cyclist is travelling along a track at 8 m/s when a rabbit runs out in front of them. they stop their bike in 1.6 seconds. calculate their deceleration. when categorizing victims of hypothermia as having mild, moderate, and severe hypothermia, which assessment findings will help the nurse identify the clients with moderate hypothermia? select all that apply. one, some, or all responses may be correct. besides visual input, what other sensations contribute to the sense of equilibrium? besides visual input, what other sensations contribute to the sense of equilibrium? mental activities, such as counting backwards sound detected in the cochlea strong leg muscles proprioceptors detecting information about neck muscles A video streaming company offers two monthly plans. Plan A charges $3 per video viewed plus a flat rate of $8 per month. Plant B charges $5 per video viewed and no additional flat rate.A write and solve an inequality to determine when the cost of viewing n videos using plan A is less that the cost of viewing n video using plan B _________________ Plan A is less expensive when ____________________ PLEAE GIVE SIMPLE ANSWER WHAT GOES IN THE PLAN B LINE AND WHAT GOES IN THE PLAN A LINE. there are 3 seniors and 15 juniors in mrs. gilliss math class. three students are chosen at random from the class. a. what is the probability that the group consists of a senior and two juniors? b. if the group consists of a senior and two juniors, what is the probability that stephanie, a senior, and jan, a junior, are chosen? elderly aunt signed a contract for the sale of her home at well below market value. aunt had not read the contract before signing it because her niece, who is both her lawyer and caretaker, told her to sign the contract. aunt has a defense to the contract she signed based on her reasonable reliance on a fiduciary. a. true b. false Please help me asap! Omar wants to determine if the mass of a model rocket affects how long the rocket is able to stay up in the air. To do this, he constructs three identical rockets and then fills two of the rockets with varying amounts of sand to add mass. He then launches the rockets one at a time and times how long they are able to stay airborne.What is the test variable (independent variable) in Omar's experiment? A. the materials out of which the rockets were made B. the time the rockets remain airborne C. the force with which each rocket is launched D. the masses of the model rockets