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3 years ago

A negative externality:

Physics

1 answer:

wolverine [178]3 years ago

4 0

Answer:

A) is a cost to a bystander.

Explanation:

A negative externality is defined as the difference between the social cost and an economic agent from the private cost of an action.

A negative externality is a cost to a bystander as negative externality occurs when a transaction between a buyer and seller affects third party with a loss, which has no involvement in the transaction.

Hence, the correct option is A.

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aivan3 [116]

What are you trying to say?

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4 years ago

A uniform disk with a mass of 5.0 kg and diameter 30 cm rotates on a frictionless fixed axis through its center and perpendicula

igomit [66]

Answer:

Angular acceleration of the disk will be $\alpha =10.714rad/sec^2$

Explanation:

We have given mass of the disk m = 5 kg

Diameter of the disk d = 30 cm = 0.3 m

So radius $r=\frac{d}{2}=\frac{0.3}{2}=0.15m$

Moment of inertia of disk is given by $I=\frac{1}{2}mr^2=\frac{1}{2}\times 5\times 0.15^2=0.056kgm^2$

Force is given by F=4 N

Torque is given as $\tau =Fr=4\times 0.15=0.6N-m$

We also know that torque is given by $\tau =I\alpha$

$0.6=0.056\times \alpha$

$\alpha =10.714rad/sec^2$

5 0

3 years ago

A skier is standing on a horizontal patch of snow. She is holding onto a horizontal tow rope, which is about to pull her forward

fredd [130]

The magnitude of the maximum force that the tow rope can apply to the skier without causing her to move will be 81.03 N,

<h3>What is the friction force?</h3>

It is a type of opposition force acting on the surface of the body that tries to oppose the motion of the body. its unit is Newton (N).

It is defined as the product of the coefficient of friction and normal reaction.

On resolving the given force and acceleration. Mathematically aion in the different components and balancing the equation gets. Components in the x-direction.

The normal force is balanced by weight;

N = mg

The magnitude of the maximum force that the tow rope can apply to the skier without causing her to move is;

F = μN

F= μmg

F=0.14 × 59 kg × 9.81 m/s²

F = 81.03 N

Hence, the magnitude of the maximum force will be 81.03 N,

To learn more about the friction force refer to the link;

brainly.com/question/1714663

#SPJ1

5 0

2 years ago

Which of the following is not accurate when describing solids?

yuradex [85]

The correct answer is: [D]:
__________________________________________________________
"The amount of pressure exerted by a solid is solely dependent on its mass."
__________________________________________________________

5 0

3 years ago

Name two methods scientist use to obtain empirical evidence

alisha [4.7K]

<span>The scientists use data and measurement to obtain empirical evidence. Data can be collected through direct observation or else experimentation. Empirical measurements and data can be gathered by using qualitative and quantitative methods. Empirical evidence contains the recording and analyzing the data which is a central part of scientific method.</span>

3 0

3 years ago