1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lord [1]
2 years ago
10

It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a

1000-m-diameter cylinder that rotates about its axis. The inside surface is the deck of the space station. What rotation period will provide "normal" gravity?
Physics
2 answers:
Archy [21]2 years ago
6 0

To solve this problem, apply the concepts related to the centripetal acceleration as the equivalent of gravity, and the kinematic equations of linear motion that will relate the speed, the distance traveled and the period of the body to meet the needs given in the problem. Centripetal acceleration is defined as,

a_c = \frac{v^2}{r}

Here,

v = Tangential Velocity

r = Radius

If we rearrange the equation to get the velocity we have,

v = \sqrt{a_c r}

But at this case the centripetal acceleration must be equal to the gravitational at the Earth, then

v = \sqrt{gr}

v = \sqrt{(9.8)(\frac{1000}{2})}

v = 70m/s

The perimeter of the cylinder would be given by,

\phi = 2\pi r

\phi = 2\pi (500m)

\phi = 3141.6m

Therefore now related by kinematic equations of linear motion the speed with the distance traveled and the time we will have to

v = \frac{d}{t} \rightarrow \text{ But here } d = \phi

v = \frac{\phi}{t} \rightarrow t = \frac{\phi}{t}

t = \frac{3141.6}{70m/s}

t = 44.9s

Therefore the period will be 44.9s

Firdavs [7]2 years ago
4 0

Answer:

T \approx 44.88\,s

Explanation:

"Normal" gravity is equal to 9.807 meters per squared second and cylinder must rotate at constant speed in order to simplify the equation of acceleration, which is in the radial direction. The centrifugal acceleration experimented by people allow them to be on the inside surface.

g = \omega^{2}\cdot R

The angular speed required to provide "normal" gravity is:

\omega = \sqrt{\frac{g}{R} }

\omega = \sqrt{\frac{9.807\,\frac{m}{s^{2}} }{500\,m} }

\omega \approx 0.14\,\frac{rad}{s}

The rotation period is:

T = \frac{2\pi}{\omega}

T = \frac{2\pi}{0.14\,\frac{rad}{s} }

T \approx 44.88\,s

You might be interested in
76.8 kPa to mm of Hg
Bumek [7]

Answer:

The answer is 576.0473

Explanation:

Hope this helps.

Please mark my answer as brainliest?

3 0
3 years ago
1. boiling point of water
melomori [17]

Answer:

what is the question. . .

5 0
2 years ago
Which considerations are used to calculate a windchill factor? Select two options.
vlada-n [284]

Wind speed and air temperature are used to calculate a windchill factor.

<u>Explanation:</u>

<u></u>

Wind-chill factor is the reduction of body temperature due to the passing flow of lower-temperature air.

The air temperature  value is always higher than the wind chill numbers. the heat index will be used if the apparent temperature is higher than the air temperature.So, Wind speed and air temperature are mainly used to calculate a windchill factor.

There are many ways, the surface loses its heat through conduction, evaporation,radiation, and convection.The rate of convection depends on  the difference in temperature between the surface and the fluid surrounding the surface and the velocity of that fluid with respect to the surface. The air around the warm surface will be heated, an insulating  layer of warm air forms against the surface.The layer becomes a boundary between two. As the wind speed is high the surface cools down rapidly.

7 0
3 years ago
Read 2 more answers
Irreversible damage to the liver due to long term alcohol abuse is called:
damaskus [11]

Answer:

A, Cirrhosis

Explanation:

3 0
3 years ago
Read 2 more answers
The volume electric charge density of a solid sphere is given by the following equation: The variable r denotes the distance fro
qwelly [4]

Answer:

62.8 μC

Explanation:

Here is the complete question

The volume electric charge density of a solid sphere is given by the following equation: ρ = (0.2 mC/m⁵)r²The variable r denotes the distance from the center of the sphere, in spherical coordinates. What is the net electric charge (in μC) of the sphere if the radius of the sphere is 0.5 m?

Solution

The total charge on the sphere Q = ∫∫∫ρdV where ρ = volume charge density = 0.2r² and dV = volume element in spherical coordinates = r²sinθdθdrdΦ

So,  Q =  ∫∫∫ρdV

Q =  ∫∫∫ρr²sinθdθdrdΦ

Q =  ∫∫∫(0.2r²)r²sinθdθdrdΦ

Q =  ∫∫∫0.2r⁴sinθdθdrdΦ

We integrate from r = 0 to r = 0.5 m, θ = 0 to π and Φ = 0 to 2π

So, Q =  ∫∫∫0.2r⁴sinθdθdrdΦ

Q =  ∫∫∫0.2r⁴[∫sinθdθ]drdΦ

Q =  ∫∫0.2r⁴[-cosθ]drdΦ

Q =  ∫∫0.2r⁴-[cosπ - cos0]drdΦ

Q =  ∫∫∫0.2r⁴-[-1 - 1]drdΦ

Q =  ∫∫0.2r⁴-[- 2]drdΦ

Q =  ∫∫0.2r⁴(2)drdΦ

Q =  ∫∫0.4r⁴drdΦ

Q =  ∫0.4r⁴dr∫dΦ

Q =  ∫0.4r⁴dr[Φ]

Q =  ∫0.4r⁴dr[2π - 0]

Q =  ∫0.4r⁴dr[2π]

Q =  ∫0.8πr⁴dr

Q =  0.8π∫r⁴dr

Q =  0.8π[r⁵/5]

Q = 0.8π[(0.5 m)⁵/5 - (0 m)⁵/5]

Q = 0.8π[0.125 m⁵/5 - 0 m⁵/5]

Q = 0.8π[0.025 m⁵ - 0 m⁵]

Q = 0.8π[0.025 m⁵]

Q = (0.02π mC/m⁵) m⁵

Q = 0.0628 mC

Q = 0.0628 × 10⁻³ C

Q = 62.8 × 10⁻³ × 10⁻³ C

Q = 62.8 × 10⁻⁶ C

Q = 62.8 μC

3 0
2 years ago
Other questions:
  • A cylinder has a length of 3.23 cm, a diameter of 1.75 cm, and a mass of 65.3 grams. What is the density of the cylinder? Based
    12·1 answer
  • A tennis player standing 12.6m from the net hits the ball at 3.00 degrees above the horizontal. To clear the net, the ball must
    12·2 answers
  • A car accelerates from rest to 12 m/s in 4 seconds. What is its acceleration?
    12·1 answer
  • Which of the following types of light microscopy improves the resolution of thick specimens by illuminating one plane of the spe
    9·1 answer
  • You want to create an electric field vector E = &lt; 0, 5 104, 0&gt; N/C at location &lt; 0, 0, 0&gt;. Where would you place a p
    14·1 answer
  • A particle of charge 3.53×10 ​−8 ​​ C experiences a force of magnitude 6.03×10 ​−6 ​​ N when it is placed in a particular point
    11·1 answer
  • y’all I would rlly appreciate if y’all gave me the answers to all my questions. My cousin has over 200 assignments she hasn’t do
    7·1 answer
  • You are asked to construct a mobile with four equal m = 141 kg masses, and three light rods of negligible mass and equal lengths
    9·1 answer
  • A ball is thrown with a velocity of 35 meters per second at an angle of 30° above the horizontal. which quantity has a magnitude
    7·1 answer
  • You move a 25 N object 5 meters. If it takes 8 s how much power did you do?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!