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leonid [27]
3 years ago
11

Which of the following is characteristic of the second stage within a demographic transition?

Physics
2 answers:
dmitriy555 [2]3 years ago
7 0
The answer is A. I think
Elan Coil [88]3 years ago
3 0
The answer is A) <span>The death rate begins to fall, but birth rates remain high for a time.</span>
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I need some help with this!
Sonja [21]

Explanation:

ummm I believe it's frequency

5 0
3 years ago
A 5.00 kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the en
Brut [27]

Answer:

75 N

Explanation:

In this problem, the position of the crate at time t is given by

y(t)=2.80t+0.61t^3

The velocity of the crate vs time is given by the derivative of the position, so it is:

v(t)=y'(t)=\frac{d}{dt}(2.80t+0.61t^3)=2.80+1.83t^2

Similarly, the acceleration of the crate vs time is given by the derivative of the velocity, so it is:

a(t)=v'(t)=\frac{d}{dt}(2.80+1.83t^2)=3.66t [m/s^2]

According to Newton's second law of motion, the force acting on the crate is equal to the product between mass and acceleration, so:

F(t)=ma(t)

where

m = 5.00 kg is the mass of the crate

At t = 4.10 s, the acceleration of the crate is

a(4.10)=3.66\cdot 4.10 =15.0 m/s^2

And therefore, the force on the crate is:

F=ma=(5.00)(15.0)=75 N

7 0
3 years ago
If temperature and the number of particles remain constant, and increase in pressure will cause volume to
omeli [17]
The correct answer is remain the same because if the particles and temperature remain constant, when the pressure increases the temperature is not increasing so it would just stay the same
5 0
3 years ago
Describe a situation where an object has a changing velocity but constant speed
Lubov Fominskaja [6]

uniform circular motion. tangential speed constant. direction changes

7 0
3 years ago
A football coach walks 24 meters eastward, then 12 meters
elena-14-01-66 [18.8K]

Answer:

Distance magnitude = 24 meters

The direction of the displacement = Eastward

Explanation:

The distance walked by the football coach eastward = 24 meters

The distance walked by the football coach westward = 12 meters

Then the distance walked by the football coach eastward = 36 meters

Finally, the distance walked by the football coach westward = 22 meters

The total distance walked by the coach eastward  = 24 + 36 = 60 meters

The total distance walked by the coach westward  = 12 + 22 = 34 meters

Taking x-direction as positive, we have;

The magnitude of the distance = 60 - 34 = 24 meters,

The direction of the coach = Eastward.

4 0
3 years ago
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