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vagabundo [1.1K]
4 years ago
5

How does population stimulate social change?

Physics
1 answer:
Dmitry_Shevchenko [17]4 years ago
8 0

Answer:

A change in the size of the population may bring about changes in the culture. For example, food brought to this country by immigrant groups have become common in many American kitchens. Population increases and decreases affect the economy. For example, by increasing the demand for goods and services, a growing population may increase employment and stimulate the economy. An increase in the general population also means that there are more people occupying the same amount of space, which creates more crowded conditions. In addition, the larger population brings increased demand for energy, food, housing, schools, stores, and transportation. People also bring about changes simply by moving from one place to another. Migrations of people within a country can cause social changes, such as the loss of regional distinction within the country. Social and cultural changes also result from changes in the average age of a population. When fewer people are having babies, for example, there is less need for schools, recreation centers, and other services geared toward children.

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A small bead with a positive charge q is free to slide on a horizontal wire of length 4.5 cm . At the left end of the wire is a
-Dominant- [34]

Answer:

1.5cm

Explanation:

The place where the bead will come to rest is the place where the force between the left charge and the bead is the same, but in opposite direction, as he force between the right charge and the bead.

F_{left} = F_{right}\\K\frac{q_{left}*q_b}{r_{left}^2} =K\frac{q_{right}*q_b}{r_{right}^2}

Also:

r_{left}+r_{right}=0.045m\\r_{right} = 0.045m-r_{left}

q_{left}= q\\q_{right}=4q

So, we replace and simplify. Notice that the charges and the Coulomb constant will cancel:

K\frac{q_{left}*q_b}{r_{left}^2} =K\frac{q_{right}*q_b}{r_{right}^2}\\\frac{q*q}{r_{left}^2} = \frac{4q*q}{(0.045m-r_{left})^2}\\(0.045m-r_{left})^2 =4r_{left}^2\\0.002025m - 2*0.045r_{left} + r_{left}^2 = 4r_{left}^2\\3r_{left}^2 + 0.09r_{left} - 0.002025m = 0

r_{left} = \frac{-(0.09)+-\sqrt{(0.09)^2-4*(3)(-0.002025)}}{2(3)}\\ r_{left} = 0.015m| -0.045m

But the only solution that would place the bead on the wire is 0.015m or 1.5cm, so this is our answer.

5 0
3 years ago
Resistor A has twice the resistance of resistor B. The two are connected in series and a potential difference is maintained acro
Ainat [17]

Answer:

<em>The thermal energy dissipated in A would be twice that in B</em>

Explanation:

Resistor B (RB)= R

Resistor A (RA)= 2 R

When they are connected in series the equivalent Resistance in the circuit would be;

Equivalent resistance = RA +RB = R + 2 R = 3 R;

From ohms law I = V/R

I = V/3 R

Now the thermal energy is the power dissipated by the circuit and can be obtained thus;

P =I^{2}R

Then,

P_{A} = (\frac{V}{3R}) ^{2} *2 R\\\\P_{A}  = \frac{V^{2} }{9R^{2} } *2R\\\\P_{A} = \frac{2}{9}( \frac{V^{2} }{R}) \\\\P_{B} = (\frac{V}{3R}) ^{2} * R\\\\P_{B}  = \frac{V^{2} }{9R^{2} } *R\\\\P_{B} = \frac{1}{9}( \frac{V^{2} }{R})

Therefore Pa : Pb = 2: 1, this means that the thermal energy dissipated in A would be twice that in B

4 0
3 years ago
This is the 3rd time I reposted this question lol.
Mamont248 [21]

Answer:

Blood absorbs nutrients and the waste products of cells. It carries waste away from cells and pumps nutrients through the whole body.

Explanation:

8 0
3 years ago
Purse-seine fishing is known to be the safest fishing method for protecting dolphins.
Citrus2011 [14]
<span>Purse-seine fishing is known to be the safest fishing method for protecting dolphins.

This is false. This type of fishing </span><span>method has been most blamed for the unintentional death of dolphins.</span>
4 0
4 years ago
Read 2 more answers
What is the total translational kinetic energy in a test chamber filled with nitrogen (N2) at 2.02×105 Pa and 20.7°C? The dimens
Mumz [18]

Answer:

K. E = 6.0796 × 10^ -21 Joule

Explanation: see attachment

3 0
4 years ago
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