Astronaut Definition and 144 Threads

I am in the last year of high school... I am an Indian citizen... I want to be an astronaut... I am quite strong at computer sci and good at other subjects... What subjects should I study I am U.G and P.G?? I am not so tall... Is height considered even for educator astronauts? What all should I...

Let say a weighing machine is brought to the Moon. If an astronaut weighs 70 kg on Earth, will the machine shows 70 kg on Moon? By right it should because mass is always constant? But I am not sure. Just like if a man is 60 kg at the Equator, will the same weighing machine...

Homework Statement An astronaut of mass 60 kg and a small asteroid of mass 40 are initially at rest with respect to the space station. The astronaut pushes the asteroid with a constant force of magnitude 250N for 0.35s. Gravitational forces are negligible. A)How far apart are the astronaut and...

Famous astronaut: - Aliens are visiting us Normally it's not a good thing to start with the conclusion, but can we in this case pre-conclude that Mitchell is just a stupid nutcase? http://www.youtube.com/watch?v=CwE0vDuTm48&feature=related (also see the rest of this Larry King show)...

Homework Statement Astronaut is at rest in space. He has back of apples with him. How should he throw the rocks away to gain maxium velocity. (one by one, whole back, slice the apples into smaller fracments, group the apples, etc) Homework Equations p=mv The Attempt at a Solution I...

How much force does the 68 kg astronaut exert on his chair while accelerating straight up at 12 ?

Homework Statement An astronaut on the moon, where g=1.6m/s/s, strikes a golfball giving the ball a velocity of 32m/s [35degrees above the moons horizontal]. The ball lands in a crater floor that is 15m below the level where it was struck. Determine: a) The maximum height of the ball...

An astronaut traveling at 0.90c, with respect to Earth, measures his pulse and finds it to be 70 beats per minute. a) Calculate the time required for one pulse to occur, as measured by the astronaut. b) Calculate the time required for one pulse to occur, as measured by an Earth-based...

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

A 619 kg satellite is in circular orbit 7.84x106 m above the surface of the Earth. Find: a) the acceleration due to gravity created by the Earth at the distance of the satellite. correct check mark m/s2 b) the weight of a 70.4 kg astronaut inside the satellite. Equations: Fg = G M...

Homework Statement An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 143 kg. During a space-walk, the unit, which has been filled with propellant gas, ejects some gas with a velocity of +30.9 m/s. As a result, the...

[SOLVED] Momentum problem Two astronauts float in space, at rest relative to each other. The first astronaut, mass 63.4 kg, holds a ball of mass 7.28 kg, which she throws at speed 6.17 m/s. The second astronaut, mass 83.1 kg, then catches the ball. Find the speed one astronaut is moving...

[SOLVED] 200kg Astronaut, 2.0 m/s, 100.0 N rocket ? A 200.0 kg astronaut and equipment move with a velocity of 2.00 m/s toward an orbiting spacecraft . How long will the astronaut need to fire a 100.0 N rocket backpack to stop the motion relative to the spacecraft ? Give your answer in s...

[SOLVED] Gravity question Homework Statement Calculate how far an astronaut would need to be away above the Earth in order for his weight to be 0.01 his weight on the Earth's surface. Homework Equations g = GM/r^2 F = GMm/r^2 The Attempt at a Solution I have no correct way to solve...

Homework Statement Three astronauts, propelled by jet backpacks, push and guide a 160 kg asteroid toward a processing dock, exerting the forces shown in Fig. 5-31, with F1 = 30 N, F2 = 36 N, F3 = 58 N, 1 = 27°, and 3 = 55°. What is the asteroid's acceleration (a) in unit-vector notation and as...

an astronaut in gravity free space is twirling a mass m on the end of a string of length R in a circle, with constant angular velocity. Write down Newtons second lasw in polar coordinates and find the tension of the string. What makes up F(t) without acceleration and gravity? I'm confused.

Sorry guys, one more question for now. It is the only other one I couldn't really get on this homework assignment. Homework Statement An astronaut is about to explore an asteroid of average density \rho=5000 kg/m^3. He is worried that he may accidentally jump from its surface and float off...

Homework Statement An astronaut has left spacelab V to test a new space scooter for possible use in constructing Space Habitat I. Her partner measures the following velocity changes, each taking a place in a 10-s interval. What are the magnitude, the algebraic sign and and the direction of the...

Hi every body ,anyone can give me any idea about my Question !

From what I understand, if an outside observer was to witness an astronaut falling into a black hole, relativity dictates that we would see him approach the black hole slower and slower until he ultimately "freezes" in our relative time due to time dilation. My question is, would we actually...

Homework Statement I've been trying to do this problem for about 2 hours now. I can't seem to find the right equations to use. Any help would be appreciated A spacewalking astronaut servicing an orbiting space telescope has run out of fuel for her jet pack and is floating 20.0 m from the...

Homework Statement An astronaut of mass 74 kg pushes off a satellite of mass 420 kg, exerting a force of 120 N for the 0.82 s they are in contact. Homework Equations What is the speed of the astronaut after they have separated? What is the speed of the satellite after they have...

I have a question regarding time dilation: An astronaut travels at a speed of 7800 m/s relative to the earth. According to a clock on earth, the trip lasts 15 days. Determine the difference (in seconds) between the time recorded by the Earth clock and the astronaut’s clock. Now I took the...

What program/field of study would be good to become an astronaut, with the hope of one day going to mars?

A 60kg astronaut floating in space simultaneously tosses away a 14-kg oxygen tank and a 5.8kg camera. The tank moves in the x direction at 1.6 m/s, and the astronaut recoils at .85m/s in a direction 200degrees counterclockwise from the x axis. Find the velocity of the camera. I can't find a...

http://www.technewsworld.com/rsstory/56068.html Seems he is serious about it. Without doubts,he deserves to go if he wants to. So far it's just zero- G training,but I remember reading he dreamed about longer living in an Earth orbit some day.

http://www.cnn.com/2007/US/02/05/space.love/index.html Obviously our government was successful in choosing mentally balanced candidates for our astronaut corp. Good thing they weren't mounting a mission to mars.

I have no idea how to start this problem: An 80.0 spacewalking astronaut pushes off a 620 satellite, exerting a 100 force for the 0.590 it takes him to straighten his arms.How far apart are the astronaut and the satellite after 1.20 ? I know that it involves Newton's 3rd law since the...

Why does an astronaut in a spacecraft orbiting the Earth experience a feeling of weightlessness?

I am pretty sure i have this question correct but i want to make sure it is likely to show up on a test An astronaut is motionless in outer space. Upon command the propulsion unit strapped to his back ejects some gas with a velocity of 32m/s and the astronaut recoils with a velocity of...

Anyone know how to do this? An astronaut is rotated in a horizontal centrifuge at a radius of 8.0 m. (a) What is the astronaut's speed if the centripetal acceleration is 7.0g? (b) How many revolutions per minute are required to produce this acceleration? (c) What...

Sorry if this question seems like an elementary school topic but I don't really recall anyone really telling me what would happen is an astronaut took off some part of his space suit. I recall that for some reason his blood would boil (?), would he explode(literally) because of no pressure of...

What is the apparent weight of a 75-kg astronaut 4200 km from the center of the Earth's Moon in a space vehicle (a) moving at constant velocity, and (b) accelerating toward the Moon at 2.9 m/s^2? State the "direction" in each case. I understand part a. I got 21 Newtons towards the moon by...

WAMC Radio, ALBANY, NY (2006-01-30) The Best of our Knowledge (TBOOK) WOMEN IN SCIENCE AND SPACE/JULIE PAYETTE, PT. 1 OF 2 - http://www.publicbroadcasting.net/wamc/news.newsmain?action=article&ARTICLE_ID=871933 (mp3 - one can download using 'save target as') The Best of Our Knowledge...

Well I graduatd high school a few weeks ago, and honestly, I want to be an astronaut. Yeah I know it sounds crazy, please don't laugh at me. I've always wanted to be one. But I don't know how to approach it. Out of all the highly eduated peopl who try to be one, how many actually become one...

A 64.1 kg astronaut is on a space walk when the tether line to the shuttle breaks. The astronaut is able to throw a 11.0 kg oxygen tank in a direction away from the shuttle with a speed of 11.7 m/s propelling the astronaut back to the shuttle. Assuming the astronaut starts from rest, find final...

A 120kg astronaut stands on the surface of an asteroid of radius 600m. The astrunaut leaves the surface with 15J of kinetic energy and reaches a maximum height of 300m above the surface. What is the mass of the asteroid? (Answer: 3.4*1012kg) At the maximum height, all of the kinetic energy...

Pushy Astronaut -------------------------------------------------------------------------------- a) An astronaut of mass 70 kg pushes off a satellite of mass 420 kg, exerting a force of 120 N for the 0.83 s they are in contact. What is the speed of the astronaut after they have separated...

Q. An astronaut in his space suit can throw a ball a maximum distance dmax = 8 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...

what is the apparent weight of a 65 kg astronaut 4200 km from the centre of the moon in a space vehicle a) moving at constant velocity, and b) accelerating toward the moon at 3.6 m/s^2? state the direction in each case. [mass of moon: 7.36*10^22 kg] [radius of moon: 1.74 * 10^6 m] [Period...

why does astronaut feel ' no weight ' when in space?

This problem is driving me insane: An astronaut is initially at rest, at a distance x_1 from the spaceship. She hurls a wrench with a speed v, relative to the spaceship. Find the final distance x_2 between the spaceship and the wrench using some or all of the variables given.

http://www.cnn.com/2004/TECH/space/10/04/gordon.cooper/index.html

http://www.palmbeachpost.com/localnews/content/auto/epaper/editions/sunday/local_news_04525c18064c018f10a0.html Dr. Mitchell's web site: http://www.nidsci.org