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Dvinal [7]
3 years ago
7

A man inside an insulated metallic cage does not receive shock when the cage is highly charge .explain.

Physics
1 answer:
Luba_88 [7]3 years ago
5 0

A man inside an insulated metallic cage does not receive shock when the cage is highly charged because the whole charge reside on outer surface of the cage.

If the cage was a non-conductive cage, then the current cannot pass through the cage so it cannot affect the person in the cage.

For example- If you are seated in a car (metal body) and the car is hit with lightning, it is very unlikely that the person in the car would be hit with the lightning.

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A mass attached to a spring oscillates with a period of 22 sec. After 22 kg are​ added, the period becomes 33 sec. Assuming that
polet [3.4K]

Answer:

Mass of 17.854 kg is only attached to the spring    

Explanation:

We have given time period in first case is 22 sec

Let initially mass is m

After 22 kg are added the period becomes 33 sec

Time period of spring mass system is

T=2\pi \sqrt{\frac{m}{k}}, here m is mass and k is spring constant

From the relation we can see that

\frac{T_1}{T_2}=\sqrt{\frac{m}{m+22}}

\frac{22}{33}=\sqrt{\frac{m}{m+22}}

Squaring both side

0.444={\frac{m}{m+22}}

0.444m+9.777=m

m = 17.584 kg

So mass of 17.854 kg is only attached to the spring

7 0
3 years ago
Which of the following materials has the highest dielectric constant
8090 [49]

Answer: D. Tantalum pentoxide

Explanation:

It has the highest dielectric constant at 26

4 0
3 years ago
Someone help me with this ASAP!!
Lelechka [254]

Answer: the last choice.

4 0
3 years ago
Read 2 more answers
Two identical balls each have a mass of 35.0 grams and a charge of . The balls are released from rest when they are separated by
OlgaM077 [116]

The given question is incomplete. The complete question is as follows.

Two identical balls each have a mass of 35.0 grams and a charge of q = 3.50 \times 10^{-6}C[/tex]. The balls are released from rest when they are separated by a distance of 6.00 cm. What is the speed of each ball when the distance between them has tripled? Use k = 9.00 \times 10^{9} Nm^{2}/C^{2}.

Explanation:

According to the conservation of energy, the formula will be as follows.

\frac{kq_{1}q_{2}}{r_{1}} = \frac{kq_{1}q_{2}}{(3r_{1})} + \frac{1}{2}mv^{2} + \frac{1}{2}mv^{2}

or,    \frac{kq_{1}q_{2}}{r_{1}}[1 - \frac{1}{3}] = mv^{2}

Putting the given values into the above formula as follows.

      \frac{kq_{1}q_{2}}{r_{1}}[1 - \frac{1}{3}] = mv^{2}

     \frac{9 \times 10^{9} \times (3.5 \times 10^{-6})^{2}}{0.09} \times \frac{2}{3} = \frac{35}{1000}v^{2}

           v^{2} = 23.333

                v = 4.83 m/s

Thus, we can conclude that speed of each ball when the distance between them has tripled is 4.83 m/s.

7 0
4 years ago
Plz help
Nikolay [14]

The answer to this is C

7 0
4 years ago
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