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3 years ago

When will the human population stop growing?

2 answers:

5 0

I think it’s when the sun explodes because since we need to the sun I think the human population will fall out. also a huge war, a meteoroid huge as the one that killed the dinosaurs comes down, there is so much ways on how the human population can stop growing. hope this help at least!

Rama09 [41]3 years ago

5 0

There’s many probabilities maybe like yk corona and stuff maybe with the vaccines it’ll turn to natural selection and people would be scared of having kids. Like the other person said when there’s no more sun because we could die off because it’s too cold. Maybe once there is no more plants because they are very vital to our daily lives.

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A gasoline engine transform approximately 34 percent of the fuel's chemical energy into mechanical energy. if energy is conserve

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A) Most is transformed into thermal energy. I took the test.

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3 years ago

. Two identical blocks, each of mass M, are connected by a massless string over a pulley of radius R and moment of inertia I. Th

Dima020 [189]

The angular acceleration of a pulley is described under the equation,

$\theta = (0.5) \alpha t^2$

So things clearing,

$\alpha = \frac{ 2\theta}{t^2}$

b) For point B it is necessary to make a sum of Forces,

$\sum F=0$

In this way,

$Mg - T_1 = Ma$

$T_1 = Mg - Ma$ (1)

For block 2, we have the following relationship,

$T_2 = Ma$ (2)

So,

$T_1 - T_2 = I \frac{a}{R}$ (3)

Substituting (1) and (2) in (3)

$Mg - Ma - Ma = I \frac{a}{R}$

So,

$a = \frac{2\theta R}{t^2}$

<em>**Note that</em> $\alpha R = a$

c) For this point we need to use (1)

$T1 = Mg - Ma = Mg - \frac{M^2\theta R}{t^2}$

using (2)

$RT_2=RT_1-I\alpha$

$T_2= \frac{RM(g-\frac{2\theta R}{t^2})-I\frac{2\theta}{t^2}}{R}$

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3 years ago

Look at the diagram below. The value of equivalent resistor is: A. 4 Ω B. 6 Ω C. 8 Ω D. 10 Ω

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Answer:

R=4Ω

Explanation:

R1 and R3 are parrallel

so we have : R=R1*R2/R1+R2

R=6*3/6+3

R=18/9

R=2Ω

R2 and 2Ω are in series,so we have

R=R2+2

R=2+2

R=4Ω

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3 years ago

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WINSTONCH [101]

Usually, sound needs a medium to travel through, like a vacuum for example.

Light does not need a medium to travel, and since air is considered a medium, light is not dependent on that.

On the other hand, sound needs a medium to travel through, and outer space doesn't contain space, therefore, no sound.

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