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What are some interesting facts about astronauts?
Astronauts undergo extensive physical and mental training to prepare for space missions, including survival training and learning how to live in zero gravity. They experience multiple sunrises and sunsets in a single day while in space due to the spacecraft's orbit around the Earth. Astronauts' bones and muscles weaken in space due to the lack of gravity, and they have to exercise for several hours daily to counteract these effects.
How do you sleep in space?
Astronauts sleep in sleeping bags that are attached to the walls of their spacecraft using Velcro straps. They can sleep in any orientation—upside down, sideways, or even standing up—because there is no up or down in microgravity. They can also use eye masks and earplugs to block out light and noise.
How do you create artificial gravity in space?
Good question. currently we don't, but i would think the easiest way would be to have the space station or ship rotate at a specific speed, and then have the rooms angled so you are kind of standing on the side of the ship and the centrifugal force would push you down like gravity, and you could have it spin just right so the force is the same as gravity on earth
What can we use to measure gravity that pulls something else?
You can use an accelerometer to measure the gravitational force that pulls something else towards the center of the Earth. Accelerometers detect changes in acceleration, including the acceleration due to gravity.
How do they sleep inside space station?
Astronauts sleep in sleeping bags that are tethered to the walls so they don't float around in microgravity. They can sleep in any orientation - standing, sitting, or floating. They also wear eye shades and earplugs to help them get quality rest despite the constant lighting and noise in the space station.
Why would orbiting space stations that simulate gravity likely be large structures?
Artifical gravity is created by the outward acceleration (centrifugal force) as an object rotates around an axis of rotation. The magnitude of this outward acceleration is given by the centripetal acceleration, which is the opposing inward acceleration keeping the rotating object in circular orbit around the rotating object. In space, this would be done by rotating a space station until the centripetal acceleration is equal to the acceleration of gravity on Earth. Centripetal acceleration is given by the equation: Centripetal Acceleration = Velocity2/ Radius. As you can see, the magnitude of the centripetal acceleration is largely dependent upon the object's distance (distance) from the axis of rotation. Thus, in a space station that is fairly small (has a small radius), a standing astronaut will feel a different centripetal acceleration in his head than in his feet. Take the example of an astronaut standing up in a circular rotating space station with radius 5m and rotating at a speed of 7 m/s. At the astronauts feet (about 5 meters from the axis of rotation), the astronaut's centripetal acceleration will be given by the following equation. CA = 72/5 --> CA = 9.8 m/s2. This is roughly equal to Earth's gravitation acceleration. Now, lets see the magnitude of centripetal acceleration at the astronauts head. If the astronaut is 6 feet tall (about 1.83 meters), then the radius of rotation at the astronauts head is only 3.17 meters (5 meters - 1.83 meters). The speed of rotation will also be slower because the astronauts head, being closer to the axis of rotation, will have to complete a relatively smaller circle to complete one rotation in the same amount of time as the feet. After calculations, the resulting speed of rotation is 4.289 m/s rather than 7m/s. Thus, the centripetal acceleration at the astronauts head is given by the following equation: CA = 4.2892/3.17 --> CA=5.803 m/s2. Thus, we see a serious inconsistency between the centripetal acceleration at the feet of the astronaut and at the head of the astronaut (9.8 m/s2 at the feet and 5.803 m/s2 at the head). This difference would make the astronaut feel extremely uncomfortable and nauseated, rendering them unable to function at the high level needed for space. Instead, lets look at a large space station design. Take, for example, the Stanford Torus, a design that consists of a large 1.8 km in diameter rotating ring. At this large size, the space station would only need to rotate at one rotation per minute and at a rotating speed of 94.24 m/s in order to simulate Earth's gravitational acceleration. with a radius of 900m, the 1.83 meter difference between a astronaut's feet and head would be negligible and thus an astronaut would feel just as if he or she were on Earth. This is why space stations that intend to simulate gravity should be built large enough to minimize the significance of the difference between the radius of rotation of one's feet and one's head.
When is the acceleration zero?
When standing still.
How is gravity affected if mass is changed?
if you double the earths density say , standing at the surface you would experience twice the acceleration, weight would be doubled
Why do astronauts lie on their back when rocket ship undergoes sudden acceleration?
This position greatly reduces stresses on a human body as the acceleration force is divided over greater area(back). If they were standing on their feet or sitting, stresses would be greater because of the lesser area, which could be potentially dangerous(risk of injury).
Whenever an object is standing still the value that are always zero are?
When an object is standing still, its velocity, acceleration, and net force are always zero.
When the astronauts were standing on the moon the sky seemed black it is right?
Yes. This is because the Moon has no significant amount of atmosphere.
What is the acceleration speed if you go from standing still to running 11 ms in 5 seconds?
The average rate of acceleration is (11/5) = 2.2 m/sec2 .
When ever an object is standing still which value is always zero?
Its speed, velocity, and acceleration are all zero.
When a person experience third stage or a total solar eclipse where is he standing?
He's standing in the umbra of the lunar shadow.
What local wind would you experience if you were standing in a valley?
bj
Can a triangle be used for acceleration formula?
The whole proper formula for acceleration is Δv/Δt; change in velocity divided by change in time. the triangle is the uppercase Greek letter delta, standing for "change in/of".
What is earths gravitational acceleration?
Standing at surface radius its = 9.82 (m/s)/sbut double the radius and the acceleration drops to 9.82 / ((2 / 1)2) = 2.455 (m/s)/s
