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.
Answer:

Explanation:
Given:
- change in stiffness constant of the spring on replacing the original springs,

- mass of the car,

- initial length of the original car-spring before compression,

- final length of the original car-spring after compression,

So, weight of the car:



<u>Now the spring constant of original spring:</u>
(since 4 springs are in parallel)


<u>So the stiffness constant of the new springs:</u>



<u>Now the height lowered:</u>
(since 4 springs are in parallel)

Complete Question
The complete question is shown on the first uploaded image
Answer:
The current is 
Explanation:
From the question we are told that
The voltage of battery is 
The capacitance of capacitor is 
The resistance of the resistor is 
Generally the current at the instant the capacitor starts charging is

substituting values


We can rearrange the mirror equation before plugging our values in.
1/p = 1/f - 1/q.
1/p = 1/10cm - 1/40cm
1/p = 4/40cm - 1/40cm = 3/40cm
40cm=3p <-- cross multiplication
13.33cm = p
Now that we have the value of p, we can plug it into the magnification equation.
M=-16/13.33=1.2
1.2=h'/8cm
9.6=h'
So the height of the image produced by the mirror is 9.6cm.
A)0.0714 a second (7*60)/(30*60)=4.284 4.284/60=0.0714