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3 years ago

7

Which of these is a part of the biosphere? a. wind b. lakes c. bacteria d. glaciers

2 answers:

Aleks [24]3 years ago

4 0

B. lakes is a part of the biosphere
Biosphere is defined as "<span>the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms." and a lake is the only thing on the list that could be occupied by a living thing.</span>

Hatshy [7]3 years ago

3 0

The answer is bacteria. Living things are part of the biosphere and bacteria is the only living thing.

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The Earth moving round the Sun in a circular orbit is acted upon by a

zalisa [80]

No I do not agree. It is because work is done when force acting o a body displace or covers certain displacement in the direction of force applied .

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3 years ago

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Anna71 [15]

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3 years ago

A 1500 kg car decelerates from an initial velocity of 19 m/s to a skidding stop. If the coefficient of kinetic friction is 0.100

Stella [2.4K]

Answer:

19.4 seconds

Explanation:

We have:

m: mass of the car = 1500 kg

v₀: is the initial speed = 19 m/s

$v_{f}$ : is the final speed = 0 (it stops)

$\mu_{k}$ : is the coefficient of kinetic friction = 0.100

First, we need to find the acceleration by using the second Newton's law:

$\Epsilon F = ma$

$-\mu_{k}N = ma$

$-\mu_{k}mg = ma$

Solving for a:

$a = -\mu_{k}g = -0.1*9.81 m/s^{2} = -0.981 m/s^{2}$

Now we can find the time until it stops:

$v_{f} = v_{0} + at$

Solving for t:

$t = \frac{v_{f} - v_{0}}{a} = \frac{-(19 m/s)}{-0.981 m/s^{2})} = 19.4 s$

Therefore, the time until it stops is 19.4 seconds.

I hope it helps you!

7 0

3 years ago

Convert <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%280.779mg%29%28min%29%7D%7BL%7D" id="TexFormula1" title="\frac{(0.779mg)(mi

Orlov [11]

The number converted is $0.0467 \frac{(kg)(s)}{m^3}$

Explanation:

In order to convert from the original units to the final units, we have to keep in mind the following conversion factors:

$1 kg = 1000 g = 10^6 mg$

$1 min = 60 s$

$1 m^3 = 1000 L$

The original unit that we have is

$\frac{mg\cdot min}{L}$

Therefore, it can be rewritten as:

$=\frac{mg \frac{1}{10^6 mg/kg}\cdot min\cdot 60 s/min}{L\frac{1}{1000L/m^3}}=0.06 \frac{(kg)(s)}{m^3}$

Therefore, since the initial number was 0.779, the final value is

$0.779\cdot 0.06 \frac{(kg)(s)}{m^3}=0.0467 \frac{(kg)(s)}{m^3}$

#LearnwithBrainly

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4 years ago

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yawa3891 [41]

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