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Sidana [21]
4 years ago
15

What does critical mass depend on

Physics
2 answers:
juin [17]4 years ago
8 0

Answer:

The critical mass depends upon its nuclear properties, its density, it shape, its enrichment, its purity, its temperature and its surroundings

Explanation:

Law Incorporation [45]4 years ago
6 0
The critical mass depends upon its nuclear properties
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A flywheel flows from 250rpm to 150rpm in 4.2 seconds. How many revolutions occur during this time ​
Assoli18 [71]

Answer:

7revolutions

Explanation:

Given parameters:

Initial revolution  = 250rpm

Final revolution  = 150rpm

Time  = 4.2s

Unknown:

Number of revolutions that occur at this time = ?

Solution:

To solve this problem;

 let us find the change in revolution  = 250rpm - 150rpm  = 100rpm

Convert the time to seconds;

         60s makes 1 minute

        4.2s will make \frac{4.2}{60}   = 0.07min

So;

      The number of revolutions at this time  = 100rpm x 0.07min

         =   7revolutions

6 0
4 years ago
A 3-kg wheel with a radius of 35 cm is spinning in the horizontal plane about a vertical axis through its center at 800 rev/s. A
Kruka [31]

Answer:

\omega_f = 585.37 \ rev/s

Explanation:

given,

mass of wheel(M) = 3 Kg

radius(r) = 35 cm

revolution (ω_i)=  800 rev/s

mass (m)= 1.1 Kg

I_{wheel} = Mr²

when mass attached at the edge

I' = Mr² + mr²

using conservation of angular momentum

I \omega_i = I' \omega_f

(Mr^2) \times 800 = ( M r^2 + m r^2) \omega_f

M\times 800 = ( M + m )\omega_f

3\times 800 = (3+1.1)\times \omega_f

2400 = (4.1)\times \omega_f

\omega_f = 585.37 \ rev/s

3 0
4 years ago
Gravity causes___ objects to accelerate
kolbaska11 [484]
Gravity causes falling objects to accelerate.
4 0
4 years ago
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An important strength of the naturalistic observation method of research is that
liraira [26]

To be careful towards what you do.

6 0
4 years ago
PLEASE HELP ME WITH THIS
Kitty [74]

Answer:

i think it might be c but i know its not A or B and im

on the fence for D so the best answer would be C

Explanation:

3 0
3 years ago
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