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SIZIF [17.4K]
3 years ago
12

Does every scientific method begin with an observation? explajn.

Physics
1 answer:
Alla [95]3 years ago
8 0

yes, because you have to observe your experiment while doing it in case something goes wrong

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The newest generation of smart phone uses three different batteries connected in a series simultaneously to extend battery life
azamat

Answer:

7.2 V

Explanation:

The three batteries are connected in series to the terminals of the phone: it means that they are connected along the same branch, so the current flowing through them is the same.

This also means that the potential difference across the phone will be equal to the sum of the voltages provided by each battery.

Here, the voltage provided by each battery is

V = 2.4 V

So, the overall voltage will be

V = 2.4 V + 2.4 V + 2.4 V = 7.2 V

8 0
3 years ago
bacteria and other prokaryotes are found deep underground in water and in the air. one micron 10^-6 is a typical length scale as
tankabanditka [31]
<span>I don't think there is enough information from the question. If you are asked to calculate the number of microbes in a certain area., then it should be that the total area or maybe the volume of that should be given so you can estimate the number of microbes. Hope this helps.</span>

3 0
3 years ago
What may be a serious side effect of anti-depressants specific in adolescents?
Klio2033 [76]

I think its suicidal ideation......

I think

3 0
3 years ago
The bus, at location A, is traveling at 30 m/s when it is shifted to neutral and allowed to
sertanlavr [38]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The velocity of the bus at B is v_B= 31.6\  m/s

Explanation:

Let's take  position B as base point .

From the diagram  height between point B and A ia mathematically evaluated as

        h_A  = 60 -55

      h_A  = 5 \ m

From the question we are told that

   The velocity at location A is  v_A = 30 m/s

       

     According the law of conservation of energy

          PE_A + KE_A = KE_B

Where PE_A is the potential energy at A which is mathematically represented as

          PE_A = mgh_A

KE_A is the kinetic energy energy at A which is mathematically represented as

            KE_A = \frac{1}{2} mv^2_A

KE_B is the  kinetic energy at A which is mathematically represented as

          KE_B = \frac{1}{2} mv_B^2

Where v_B is the velocity at location B

So

      mgh_A + \frac{1}{2} mv_A^2 = \frac{1}{2} mv_B^2

Making v_B the subject of the formula

       v_B=  \sqrt{\frac{gh_A + \frac{1}{2} v_A^2 }{0.5} }

Substituting values

       v_B=  \sqrt{\frac{(9.8 * 5) + \frac{1}{2} 30^2 }{0.5} }

        v_B= 31.6\  m/s

7 0
3 years ago
A car travels with a velocity 16m/s and accelerates 5m/s^2. Calculate the final velocity when it has travelled 36.9m
marissa [1.9K]

v²=u²+2as

v²=16²+2×5×36.9

v²=625

√v²=√625

v=25

--------

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4 0
3 years ago
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