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2 years ago

Government create public policy to address issues in what three main areas?

Physics

1 answer:

kotykmax [81]2 years ago

4 0

Answer:

Economic
Foreign
Social

Explanation:

-Governments create public policy to address issues in social, economic, and foreign relations.

-This policy model solves all the related problems effectively while supporting and serving the government’s policies.

-The characteristics of Public Policy may include:

A response to some crisis or issue that requires attention.
Aims at achieving certain development goals or solution to a problem.
Public policy is carried or done on behalf of a country's citizenry.

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you can produce a sound by plucking a string or by blowing in a pipe. how are these two ways different?

Shkiper50 [21]

Answer:

a differenceis that the string needs force to be used. without something pulling on it then it wont make the noise. meanwhile the pipe only needs air to be blow Wich can be caused naturally or intentionally

4 0

3 years ago

A large rock of mass me materializes stationary at the orbit of Mercury and falls into the sun. Itf the Sun has a mass ms and ra

son4ous [18]

Answer:

The answer is $v = \sqrt{2G\frac{M_s}{R^2}(R-r_s)}$ .

Explanation:

From the law of gravity,

$F = G \frac{Mm}{r^2}$

considering F as a conservative force, $F = - \nabla U$ ,

the general expression for gravitational potential energy is

$U = -G \frac{Mm}{r}$ ,

where G is the gravitational constant, M and m are the mass of the attracting bodies, and r is the distance between their centers. The negative sign is because the force approaches zero for large distances, and we choose the zero of gravitational potential energy at an infinite distance away.

However, as the mass of the Sun is much greater than the mass of the rock, the gravitational acceleration is defined as

$g = -G \frac{M}{r^2}$ ,

(the negative sign indicates that the force is an attractive force), and the potential energy between the rock and the Sun is

$U = g M_e R$ ,

which is actually the total energy of the system, because the rock materializes stationary at this point (there is no radial kinetic energy).

When the rock hits the surface of the Sun, almost all potential energy is converted to kinetic energy, but not all because the Sun is not a puntual mass. So the potential energy converted to kinetic energy is

$U_p = g M_e(R- r_s)$ ,

then, the kinetik energy when the rock hits the surface is

$U_k =\frac{1}{2}M_e v^2 = g M_e(R- r_s)$ ,

$v = \sqrt{2g(R-r_s)}$

where g is the gravitational acceleration generated by the Sun at R,

$g = G \frac{M_s}{R^2}$ .

8 0

2 years ago

How does a crowbar work?

mylen [45]

It works by you putting leverage on one side makes more force go to the other side so if you put a crowbar in between a door and you push on one side the other will push the opposite side with more force

4 0

3 years ago

On a floor directly underneath a second-floor balcony, there are several spherical drops of blood about 7 mm in diameter. Which

IrinaK [193]

The correct answer for this question is this one: "The drops dripped from a bloody knife about 2 ft above the ground."
On a floor directly underneath a second-floor balcony, there are several spherical drops of blood about 7 mm in diameter. The statement that best accounts for the drops is that the drops dripped from a bloody knife about 2 ft above the ground.

Hope this helps answer your question and have a nice day ahead.

7 0

2 years ago

A ball is being rolled by a normal push of 180N. It is opposed by friction which has a force of 61N and air resistance which has

Nina [5.8K]

Resultant force is basically the force left after everything is added.

if a ball is being pushed one one side with 180N, and being pushed on teh opposite side with 84N (I added friction and air resistance since they're acting on the same side), then the resultant force would be:

180N - 84N = 96N (you can determine whether it's positive or negative based on the direction of the vector)

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3 years ago