2 years ago

Each of the following elements is magnetic except

Physics

2 answers:

maxonik [38]2 years ago

3 0

Answer:

A is the answer because it will not stick

Kamila [148]2 years ago

3 0

Answer: aluminum

Explanation:

but some types of aluminum sticks

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Dust particles in air have a typical mass of 5.0 x 10-16 kg. They undergo irregular motion due to collisions with air molecules.

Mars2501 [29]

Answer:

Rms speed of the particle will be $38.68\times 10^8m/sec$

Explanation:

We have given mass of the air particle $m=5\times 10^{-16}kg$

Gas constant R = 8.314 J/mol-K

Temperature is given T = $27^{\circ}C=273+27=300K$

We have to find the root mean square speed of the particle

Which is given by $v_{rms}=\sqrt{\frac{3RT}{m}}=\sqrt{\frac{3\times 8.314\times 300}{5\times 10^{-16}}}=38.68\times 10^8m/sec$

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2 years ago

A delta connection has a voltage of 560 V connected to it. How much voltage is dropped across each phase

SashulF [63]

Answer:

E_Phase = 560V

Explanation:

The computation of the voltage i.e. dropped across each phase is shown below:

Given that

The delta connection line voltage is

E_line = 560 V

And, in the case of delta connection, the line voltage would be equivalent to the phase voltage

That means

E_Phase = E_Line

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Hence, the voltage i.e. dropped across each phase is

E_Phase = 560V

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2 years ago

A mass of 5 kg is moving at 5 m/s when it collides with another mass of 2 kg moving in the same direction at 2 m/s. After the co

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Answer:

4.14 m/s

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m¹u¹+m²u²=(m¹+m²)v

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25+4=7v

29=7v

29/7=v

v=4.14 m/s

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