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Mariulka [41]
3 years ago
5

When considering that in the past human societies developed in greater isolation from one another than today, each of the follow

ing statements is true EXCEPT:
Physics
1 answer:
galina1969 [7]3 years ago
3 0

Answer:One can easily assume a direct cause and effect relationship between a physical environment and an aspect of culture

Explanation: During the prehistoric and the earlier centuries human societies developed in isolation, there's no interconnection or much of communication between different groups and societies.

Knowledge sharing is not prominent, but in recent times people are more connected to each other,communities and countries interaction takes place through different forums, during the earlier centuries there are no mobile communication equipments,no Television set or the level of sophistication as it is today.

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An electron in an electron gun is accelerated from rest by a potential of 25 kV applied over a distance of 1 cm.
podryga [215]

Answer:

9.38\times 10^7 m/s

Explanation:

We are given that

Potential ,V=25 kV=25\times 10^3 V

Distance,r =1 cm=\frac{1}{100}=0.01 m

1 m=100 cm

Mass of electron, m=9.1\times 10^{-31} kg

Charge, q=1.6\times 10^{-19} C

We have to find the final velocity of the electron.

Speed of electron,v=\sqrt{\frac{2qV}{m}}

Using the formula

v=\sqrt{\frac{2\times 1.6\times 10^{-19}\times 25\times 10^3}{9.1\times 10^{-31}}

v=9.38\times 10^7 m/s

Hence, the final velocity of the electron=9.38\times 10^7 m/s

3 0
4 years ago
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
The circuit below shows a silicon based transistor incorporated with a potential decider circuit to control the transistor. Dete
Kazeer [188]

Answer:

757.14 (2.d.p.)

Explanation:

CHECK THE IMAGE!! DEATHNOTE AT YOUR SERVICE. 12th Year Physics Kind Of Sucks!

7 0
3 years ago
10 PTS.
gayaneshka [121]

1.2 x (2.2 x 10⁵) = 264,000 Ω

0.8 x (2.2 x 10⁵) = 176,000 Ω

With a 'nominal' value of 220,000 Ω, it could actually be anywhere <em>between 176,000Ω and 264,000Ω</em> .

8 0
3 years ago
The transfer of the heat by the direct contact of particles of matter is
Anna007 [38]
C.c<span>onduction,  is the transfers of heat between substances that are in direct contact.</span>
3 0
3 years ago
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