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tamaranim1 [39]
3 years ago
6

Which of the following undergoes controlled chain reaction in a nuclear reactor?

Mathematics
1 answer:
tankabanditka [31]3 years ago
3 0

Answer:

the answer is option D. Uranium - 235

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A rather flimsy spherical balloon is designed to pop at the instant its radius has reached 3 centimeters. Assuming the balloon i
Anni [7]

Answer:

The radius is growing at the rate of 0.09 centimeter per second at the instant it pops.            

Step-by-step explanation:

We are given the following information in the question:

A spherical balloon is designed to pop at the instant its radius has reached 3 centimeters.

The balloon is filled with helium at a rate of 10 cubic centimeters per second .

\displaystyle\frac{dV}{dt} = 10~cm^3/sec.

We have to find fast the radius is growing at the instant it pops.

Volume of spherical balloons =

\displaystyle\frac{4}{3}\pi r^3

Differentiating, we get,

\displaystyle\frac{dV}{dt} = \frac{4}{3}\pi 3r^2 \displaystyle\frac{dr}{dt} = 4\pi r^2 \displaystyle\frac{dr}{dt}

Putting the values, we get,

10 = 4\times 3.14\times (3)^2\times \displaystyle\frac{dr}{dt}\\\\\frac{dr}{dt} = \frac{10}{4\times 3.14\times (3)^2} = 0.0884 \approx 0.09\\\\\frac{dr}{dt} = 0.09\text{ centimeter per second}

The radius is growing at the rate of 0.09 centimeter per second at the instant it pops.

4 0
3 years ago
Can someone pls pls help me?
TEA [102]

Answer:

how

Step-by-step explanation:

3 0
3 years ago
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O Passes through the point (-3,-8) and<br> has a slope of 0
maksim [4K]
Y=-8
it is a horizontal line
7 0
1 year ago
in a company, 55% of the workers are menIf 2,385 people work for the company who aren't menhow many workers are there in all? Us
AlexFokin [52]

Step-by-step explanation:

2385 arent men (45%)

55% are men

how many total person:

2385/45: 53 people for each 1%

53x100:5300 total people

6 0
3 years ago
The volume of a fish tank is 70 cubic feet. If the density is 0.4 fish over feet cubed, how many fish are in the tank?
Triss [41]

Answer:

28 fish

Step-by-step explanation:

The density here is written as fish over feet cubed, so this equation can be written as 0.4=x fish/70 cubic feet

To get x alone you must multiply 0.4 by 70 to get 28, which represents the number of fish

8 0
3 years ago
Read 2 more answers
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