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user100 [1]
3 years ago
9

Which two substances have no fixed shape and no fixed volume?

Physics
1 answer:
fenix001 [56]3 years ago
4 0

Answer:

Gas like oxygen, nitrogen etc

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Many television sets show 25 images, called 'frames, each second. What is the time interval between one
Firlakuza [10]

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Given,

Frame rate = 25 frames per second

To find,

Time interval between one frame and the next.

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We can simply solve this numerical problem by using the following process.

Now,

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A spherical helium filled balloon (B) with a hanging passenger cage being held by a single vertical cable (C) attached to Earth
Gre4nikov [31]

Answer:

The tension is  T  = 4326.7 \  N

Explanation:

From the question we are told that

   The  total mass is  m  =  200 \  kg

    The  radius is r = 5 \  m

     The  density of air is  \rho_a  =  1.225 \ kg/m^3

Generally the upward  force acting on the balloon is mathematically represented as

        F_N  =   T  + mg

=>     (\rho_a  *  V  *  g ) =   T  + mg

=>   T  =  (\rho_a  * V  *  g   )  - mg

Here V is the volume  of the spherical helium filled balloon which is mathematically represented as

      V  =  \frac{4}{3}  * \pi r^3

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=>   V  = 523.67\  m^3

So

    T  = (1.225 *  523.67*  9.8 ) -  200 *  9.8

   T  = 4326.7 \  N

5 0
3 years ago
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