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Elza [17]
3 years ago
12

A rotating space station is said to create "artificial gravity"—a loosely-defined term used for an acceleration that would be cr

udely similar to gravity. The outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. If the space station is 252 m in diameter, what angular velocity (in rad/s) would produce an "artificial gravity" of 9.80 m/s2 at the rim?
Physics
1 answer:
devlian [24]3 years ago
4 0

Answer:

0.278 rad/s

Explanation:

d = Diameter of space station = 252 m

r = Radius = \frac{d}{2}=\frac{252}{2}\ m

g = Acceleration due to gravity = 9.80 m/s²

\omega = angular velocity

Here the centripetal acceleration and the acceleration due to gravity will balance each other

Centripetal acceleration is given by

a_c=r\omega^2

a_c=g\\\Rightarrow r\omega^2=g\\\Rightarrow \frac{252}{2}\omega^2=9.8\\\Rightarrow \omega=\sqrt{\frac{9.8\times 2}{252}}\\\Rightarrow \omega=0.278\ rad/s

The angular velocity required would be 0.278 rad/s

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two forces whose magnitude are in ratio of 3:5 gives a resultant of 35N.if the angle of inclination is 60degree.calculate the ma
nadya68 [22]

Answer:

the magnitude of first force = 3 × 5= 15 N

ANd, the magnitude of second force = 5 × 5 = 25 N

Explanation:

The computation of the magnitude of the each force is shown below:

Provided that

Ratio of forces = 3: 5

Let us assume the common factor is x

Now

first force =  3x

And, the second force = 5x

Resultant force = 35 N

The Angle between the forces = 60 degrees  

Based on the above information

Resultant force i.e. F = √ F_1^2 +F_2^2 + 2 F_1F_2cos\theta

35 = √[(3x)²+ (5x)²+ 2 (3x)(5x) cos 60°]

 35 =√ 9x² + 25x² + 15x²    (cos 60° = 0.5)

35 = √49 x²

 x = 5

So, the magnitude of first force = 3 × 5= 15 N

ANd, the magnitude of second force = 5 × 5 = 25 N

7 0
3 years ago
Choose all the answers that apply.
Serhud [2]
<span>According to Newton's first law of motion:

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8 0
3 years ago
Question 7 (1 point)
Temka [501]

Answer:

Forms over water, warm humid air mass, it's a polar air mass

Explanation: I think that's right sorry if it's not..

GL! :)

4 0
3 years ago
A certain type of bird lives in two regions of a state. The distribution of weight for birds of this type in the northern region
Annette [7]

Answer: (a) Z-score are 1 and -1.2 for northern and southern regions, respectively.

Explanation: <u>Z-score</u> is how many standard deviations a data is from the population mean or how far a data point is from the mean.

The z-score is calculated by the following:

z=\frac{x-\mu}{\sigma}

where

x is the data point

μ is population mean

σ is standard deviation

For the <u>northern</u> <u>region</u> birds:

μ = 10, σ = 3, x = 13

z=\frac{13-10}{3}

z = 1

The z-score for birds living in the northern region is 1, which means it is 1 standard deviation <em>above the mean</em>.

For the southern region:

μ = 16, σ = 2.5, x = 13

z=\frac{13-16}{2.5}

z = -1.2

The z-score for southern living birds is -1.2, meaning it is 1.2 standard deviations <em>below the mean</em>.

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PtichkaEL [24]

Answer:

infrared light

Explanation:

3 0
3 years ago
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