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Art [367]
3 years ago
14

Converting compound units

Physics
1 answer:
Blababa [14]3 years ago
4 0

Answer:

Dividing the silicon density by 1000 and then multiply it by 1000000.

Explanation:

A kilogram equals 1000 grams and a cubic meter equals 1000000 cubic centimeters. Hence, we must divide the silicon density by 1000 and then multiply itby 1000000 to convert the value into kilograms per cubic centimeter. That is:

x = 2.33\,\frac{g}{cm^{3}}\times \frac{1\,kg}{1000\,g}\times \frac{1000000\,cm^{3}}{1\,m^{3}}

x = 2330\,\frac{kg}{m^{3}}

In a nutshell, we must multiply the density of silicon by 1000 to obtains its value in kilograms per cubic meter.

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When you blow some air above a paper strip, the paper, rises. This is because 1.) the air above the paper moves faster and the p
wlad13 [49]

This is happened because "the air" above "moves faster" and "the pressure" is "lower" .

Option:  1

<u>Explanation</u>:

Air movement take place from the region where air pressure is more than the region where the pressure is low. When we "blow" air above the "paper strip" paper rises because "low pressure" is created above the strip as high speed winds always travel with reduced air pressure. Hence due to higher air pressure below the strip, it is pushed upwards. This difference in pressure results into fast air moves. This happen because "speed" of the wind depends on "the difference between the pressures" of the air in the two regions.

8 0
4 years ago
A spherical capacitor is formed from two concentric, spherical, conducting shells separated by vacuum. The inner sphere has radi
galina1969 [7]

Answer:

19 cm

Explanation:

inner radius, a = 16 cm, C = 113 p F = 113 x 10^-12 F

Let b cm be the radius of outer sphere.

The formula of capacitance of spherical capacitor is given by

C = 4π∈0 a b / (b - a)

a b / ( b - a) = C / 4π∈0

a b / ( b - a ) = 113 x 10^-12 x 9 x 10^9

a b / ( b - a ) = 1.017

16 x 10^-2 x b x 10^-2 = 1.017( b - 16) x 10^-2

0.16 b = 1.017 b - 16.272

0.857 b = 16.272

b = 19 cm

5 0
3 years ago
An electron with an initial speed of 660,000 m/s is brought to rest by an electric field. What was the initial kinetic energy of
GREYUIT [131]

Answer:

Kinetic energy of the electron E_k=1.23\ eV

Explanation:

It is given that,

Initial speed of an electron, u = 660000 m/s

Final speed of the electron, v = 0 (at rest)

The kinetic energy of an electron is possessed due to the motion of an electron. The mathematical formula for the kinetic energy is given by :

E_k=\dfrac{1}{2}mv^2

m is the mass of electron

E_k=\dfrac{1}{2}\times 9.1\times 10^{-31}\times (660000)^2

E_k=1.98\times 10^{-19}\ J

Since, 1\ eV=1.602\times 10^{-19}\ J

E_k=\dfrac{1.98\times 10^{-19}}{1.602\times 10^{-19}}

E_k=1.23\ eV

So, the initial kinetic energy of the electron is 1.23 eV. Hence, this is the required solution.

7 0
4 years ago
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tester [92]

Answer:

A The overall charge will become negative as positive charges jump to the balloon

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Answer:

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