Astronaut Definition and 144 Threads

Everyone knows that paradox. In true we can say who person is standing,so If we say that the person in Earth is standing,then the clock of astronaut will run slower. Else,if we say that astronaut is standing and that Earth is moving,we see the clock of Earth's person to run slower. So in true...

Homework Statement You have been hired to check the technical correctness of an upcoming sci-fi thriller film. The movie takes place in the space shuttle. In one scene, an astronaut's safety line is damaged while she is on a space walk, so she is no longer connected to the space...

Homework Statement What is the velocity of a 90kg astronaut traveling in outer space with constant velocity? Homework Equations W=mass*acceleration The Attempt at a Solution

Homework Statement If the gravitational acceleration at Earth's surface is given by: g = GMe/Re^2, show that the period of rotation of a spaceship needed to make an astronaut feel the same normal force on the ship that they would feel on Earth, when it is given by T = √[(4pi^2)(Rs)(Re^2)/GMe]...

Solar wind contains ion charges and electromagnetic field, will Solar wind affect action potential within Astronaut's nerve system? Does anyone have any suggestions? Thanks in advance for any suggestions

Homework Statement What is the apparent weight of a 730-N astronaut when her spaceship has an acceleration of magnitude 2.0g in the following two situations. a) just above the surface of Earth, acceleration straight up; b) far from any stars of planets? Homework Equations Fnet=N-mg=ma...

Homework Statement An astronaut weighs 833N on the surface of the Earth. Determine the weight of the astronaut on Planet Z if the planet's mass is 50.0 times the mass of the Earth and has a radius of 10.0 times the radius of the Earth. Homework Equations Kepler's 3rd law...

Homework Statement A spaceship accelerates with constant acceleration to 120 m / s within 10 seconds after launch from Earth. Imagine that one of the astronauts who weighs 77 kg sits on a bathroom scale while the Launch takes place. What does the scale show during the launch ? Homework...

I thought some of you might find this interesting: http://www.reddit.com/r/IAmA/comments/r62jp/iama_nasa_astronaut_that_recently_returned_to/ :smile:

Hey guys, I'm a new guy in this forum. I've been visiting it for 1 year actually but never decided to register and so I did. I am having a presentation on black holes at school and I want some clariffication of what's going on when falling into a black hole. Well let's assume that an...

Imagine an astronaut in free space. He (or she) has zero angular or linear momentum with respect to a fixed intertial frame of an outside observer. The astronaut is intially standing up (sic) with his arms by his sides and his legs together, with zero degree offset between the top half of his...

Homework Statement a space station consists of two donut shaped living chambers A and B, that have radii r(A)= 3.2x10^2m and r(B)=1.10x10^3m. As the station rotates, the astronaut in chamber A is moved 2.40x10^2 m along a circular arc. how far along a circular arc is an astronaut in chamber B...

Homework Statement A 92-kg astronaut and a 1200-kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.14 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with the shuttle. What...

Hello, Am from India and am going to finish my engineering in electronics and communications in 2012. I want to become an astronaut. I made wrong step while choosing the specialization in engineering. Now am searching for opportunities to become an astronaut. If you are...

Homework Statement An astronaut is in trouble. He is outside the space shuttle and he is moving away from the space shuttle at speed 4.00 m/s. He has a rocket gas tank with which to change his velocity. The gas is ejected from the tank at relative speed 101.0 m/s; the remaining mass of gas...

Homework Statement An astronaut makes a round trip at 0.80 c to a star 20 light-years away, while her husband remains on Earth. Each sends the other a signal once a year by his or her own reckoning. Assume that the period of acceleration when the astronaut turns to head back home is small and...

During pilot or astronaut training, candidates are rotated around a 10.0m radius and experience a force of eight times their weight (8.0 g’s). At what speed are the trainees rotated? It was explained to me that the centripetal force (Fc) was equal to the force of gravity (Fg). Why are the...

let's assume that an astronaut is trying to shake an anvil that is more massive than him ,,,,,, this happens in outer space what would shake more the astronaut or the anvil ?? why ??

Homework Statement A 68.7 kg spacewalking astronaut pushes off a 653.0 kg satellite, exerting a 153.0 N force for the 0.763 s it takes him to straighten his arms. How far apart are the astronaut and the satellite after 9.36 min? Homework Equations d = vit + 1/2 at^2 The Attempt...

An astronaut in his space suit can throw a ball a maximum distance dmax = 14 m on the surface of the earth. a) For a given speed of the ball, what angle to the horizontal q (in degrees) will yield the greatest range? q = 45 OK b) If the ball is thrown at this same angle q, what speed...

Homework Statement A centrifuge used for astronaut training starts moving from rest with a velocity Vi=8.5t[ft/sec]. It is know that a person loses consciousness when experiences an acceleration in the order of 10g. determine: a)how long can hold the astronaut in the centrifuge before...

Homework Statement An astronaut of mass 76.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.530 m/s. With the booster rockets no...

1)Homework Statement An astronaut of mass 82.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.600 m/s. With the booster rockets...

Hey, I'm interested in studying Aerospace Engineering when I leave high school. I have still 2 more years to go before I leave, but I'm really interested in space exploration, rockets, etc. The ultimate goal would be to work for NASA as an astronaut. At this moment, I'm taking Physics, Maths...

Homework Statement Three astronauts equipped with jetpacks are pushing a satellite, having a mass of 127 kg, through space. The forces being exerted on the satellite are F1=31.7 N at an angle of 30.8 degrees above the horizontal, F2=40.2 N at 58.6 degrees below the horizontal, and F3=53.9 N...

You are in training to be an astronaut. In one of your training simulations, your goal is to land a lunar excursion module (LEM) on the surface of the Moon. This LEM has two rocket engines attached to the center of the craft. The engines typically point at angles of 22.0° in opposite directions...

The Oh-My-God cosmic ray particle is a single ultra-relativistic proton (?) carrying 50 joules of energy. Is it sufficiently energetic to kill an astronaut in the unlikely event of hitting the person? More precisely, I'm asking: i) Does most of the energy get absorbed by the human body, or...

hi! guys...i want to be an astronaut...i study in class 12 now ina cbse school in kolkata...how do i fulfill my dreams?where do i have to go for becoming an astronaut?how tough will be nasa?if anybody of u can help me i will b gratefull...:confused:

Homework Statement An astronaut in her space suit has a total mass of m1 = 91.3 kg, including suit and oxygen tank. Her tether line loses its attachment to her spacecraft while she's on a spacewalk. Initially at rest with respect to her spacecraft , she throws her oxygen tank of mass m2 =...

In my physics class (School's over now, so I can't ask my teacher.) we had this interesting problem for our final. (No, this isn't homework) We didn't do elasticity, soo... I dunno. An astronaut (It's in space to eliminate air resistance and gravity- it IS high school physics :-p) has a rather...

An astronaut weighs 1000N at the surface of the Earth of radius 6500 km, what his weight will be at 13000 km and 19500km from the centre of the earth? Do I have to calculate the new value of g at 13000 km using the following? (G• Mearth) / (Rearth)2 Where: G = 6.673 x 10-11 N m2/kg2...

Homework Statement cylindrical space station - large diameter, thin walled - radius r, mass M rotating in deep space, no gravity 1)radial spokes of negligible mass connect the cylinder ti the centre of motion. Astronaut mass m climbs a spoke to the centre. What is the fractional change in...

Ive noticed every time i see a picture of the ISS or astronauts working in outer space there is NEVER any visible stars? Why is this? i been told that they filter it somehow since they stars would be so bright, or is there another reason this has been on my mind for a long time

[b]1. An 8- kg spacewalking astronaut pushes off a 640 kg satellite, exerting 100N force for the 0.5s it takes to straighten his arms. How far apart are they after 1 minute? Homework Equations [b]3. So, I calculated the the accelration of the spaceman and the satelite during...

The question states: How much force does an 81.0 kg astronaut exert on his chair while sitting at rest on the launch pad? the answer that I got was 794 N using... W=m*g and Fnet=w+fchair=0 But I cannot seem to get the right answer for this second question: How much force does...

What is the weight in Newtons of a 80.6 kg astronaut on Mars where the acceleration due to gravity is 3.70 m/s^2. Give answer with 3 sig figs only Could I just use a ratio? Like 9.8/80.6 is equal to 3.7/? or is that over simplifying the problem?

Homework Statement In a space shuttle orbiting 6.40 x 103 km above the surface of Earth, an astronaut releases a 325 g apple. If the radius of Earth is 6.40 x 103 km, what is the acceleration of the apple? A. 2.45 m/s2 B. 4.90 m/s2 C. 9.80 m/s2 D. 19.6 m/s2...

MY First Post...what force is exerted on a astronaut in space that...?? hi I am prepping for a upcoming exam and I am trying to understand some concepts of physics and the force of gravity...which my exam will be on and i need to understand these problems so that i can know how to do the rest...

Homework Statement The astronaut orbiting the Earth in Figure P4.32 is preparing to dock with a Westar VI satellite. The satellite is in a circular orbit 700 km above the Earth's surface, where the free-fall acceleration is 8.12 m/s2. Take the radius of the Earth as 6400 km. 2. Relevant...

Homework Statement An astronaut standing on the Moon fires a gun so that the bullet leaves the barrel moving in a horizontal direction. What must be the muzzle speed of the bullet so that it travels completely around the Moon and return to its original location? How long does this trip take...

Homework Statement An 80 kg astronaut has gone outside his space capsule to do some repair work. Unfortunately, he forgot to lock his safety tether in place, and he has drifted 5.0 m away from the capsule. Fortunately, he has a 1000 W portable laser with fresh batteries that will operate it for...

Homework Statement An 89 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. the astronaut turns away to look at the Earth and several seconds later is 43.8m behind the ship, at rest to relative to the spaceship. The only way to...

http://www.cnn.com/2009/TECH/04/20/ufo.conference/index.html Mitchell, who was part of the 1971 Apollo 14 moon mission, asserted Monday that extraterrestrial life exists, and that the truth is being concealed by the U.S. and other governments.

Homework Statement An astronaut stranded in space throws a 0.70kg tool backwards at -12.0m/s in order to return to her spaceship. If she and her spacesuit together have a total mass of 90kg, how fast and in what direction is she moving after throwing the tool? So Et=Et I'm not sure...

Homework Statement An astronaut (mass mA) in space, tied to the end of a tether of length 10m, is traveling in a circle with constant speed making one revolution every 15seconds. a) Assume that the astronaut fires a spring loaded gun (containing a ball) towards the center of the circle and...

I am a 16-year-old from India. I have a keen interest in Space and Astronomy and my ambition is to become a space scientist. I am a good student, scoring high in physics and maths, as well as an avid reader of space related journals and articles. However, I have never had a hands-on/practical...

Homework Statement An astronaut of mass 65 kg pushes off a satellite of mass 420 kg, exerting a force of 120 N for the 0.94 s they are in contact. Homework Equations What is the speed of the astronaut after they have separated? Ans: 1.84 m/s What is the speed of the satellite after...

Homework Statement we have a spaceship with a spinning wheel artificial gravity thingy on-board with radius 25m, period ~ 12s, a=6.87 it is spinning anticlockwise if we take a perspective looking down on it (in the bottomleft is point A,bottom right point B,and at the top point C) an...

astronaut traveling.. what effects would she feel?? Homework Statement An astronaut is traveling in a rocket in outer space in a straight line at a constant speed of 0.5c. Which of the following effects would she experience? Her heart rate would change. She would feel heavier. She would...

Homework Statement An astronaut is a distance L from her spaceship, and it is at rest with respect to the ship, when she discovers that her tether is broken. She tosses a wrench with a spees Vw in the direction opposite that of the ship in ordr to propel herself back to the ship. The...