Astronaut Definition and 144 Threads

Newton's Third Law states that forces occur in pairs of equal magnitude acting in opposite directions on opposing bodies. When we push against a wall, the wall pushes back with a force of equal magnitude and we move as a result of not being inert enough. What would the force pair be if an...

I will try to hide how unintelligent and uneducated I actually am but I’m sure it’ll be showing throughout this question. My apologies. I really don’t know how else to find answers to questions I have besides coming to you all. In a nutshell, I’m trying to understand why an astronaut floats...

T.I.L. William Anders killed in a plane crash. https://en.wikipedia.org/wiki/William_Anders “In December 1968, Anders flew on the Apollo 8 mission, the first mission where humans traveled beyond low Earth orbit,[9] and the first crewed flight to reach and orbit the Moon.[21] When the...

https://www.nasa.gov/news-release/nasa-administrator-pays-tribute-to-space-pioneer-thomas-stafford/

Consider the following scenario: a space station is put into orbit, which is absurdly well shielded from all sorts of radiation, a.k.a. "a box". You cannot make any effective observation of what the astronaut inside is up to. (This postulate may be implausible, but in the age of "weakly...

I had solved this question but it didn't seem to be appropriate to post in the classical physics problem as my question is still homework-based. Originally I had thought this might be a conservation of momentum problem. But since we don't have any initial conditions it leaves too much to guess...

Is there any former astronaut who is now doing research in theoretical physics (like e.g string theory)?

Astronaut Michael Collins, Apollo 11 pilot, has passed away of cancer. He was 90. https://www.thehindu.com/news/international/astronaut-michael-collins-apollo-11-pilot-dead-of-cancer/article34434156.ece Rest in peace.

Experiment 1: Astronaut travels away from Earth at near the speed of light, then travels toward the Earth at near the speed of light. Einstein tells us she barely aged, but red shift/blue shift don't seem to agree with that. While traveling away, both Earth and astronaut observe each other...

How do you get into research if you are interested in medicine and want to work in research with space? Can you also become an astronaut but not be involved with space missions, thanks for your answers.

From the density and the mass we can find the volume using d=m/v <=> v=0.06 m^3. Since we consider the astronaut a sphere we find his radius using V(sphere)=4/3*π*R^3 =>R=0.242m. Now we can calculate the surface area with the formula A=4πR^2=0.735m^2. The energy absorbed will be i suppose equal...

When I was watching the live video of demo 2, I found that an astronaut was wearing his glasses during the launch event as shown by the image below. So I am wondering why he was wearing it. Also, wouldn't the glasses be potentially harmful to the astronaut due to the high acceleration? Last...

Well the first one that comes to mind is gravity and maybe centrifugal/centripetal force. I imagine that forces such as drag shouldn't even be considered. I find it difficult to imagine which belong to which frame of reference.

Find acceleration vi=20.0 m/s[E] vf= 0 t= 12 s a= ? 0 =20+ a(12) 0-20 = a(12) -20/12=a -1.7m/s2 [E]= a textbook says it's 1.7m/s [W] Is it because when velocity decreases, it increases west (opposite direction)? Is -1.7m [E] same as 1.7m [W]??

Would an astronaut really bale able to make it back to the space station by throwing a wrench in the opposite direction if his cable broke and floated away? I heard this question as it relates to Newton's third law. Wouldn't the astronaut need to throw the wrench faster than he is moving before...

Homework Statement Acceleration experienced by an astronaut in a rotating space station. Homework Equations What force would he experience is his own rotating frame of reference. The Attempt at a Solution Newton's second Law for a rotating frame is: mr'' = F net+ Fcor + Fcf Fnet (In the...

Homework Statement A 63.8kg spacewalking astronaut pushes off a 678.0kg satellite, exerting a 156.0N force for the 0.870s it takes him to straighten his arms. How far apart are the astronaut and the satellite after 8.67min? Homework EquationsThe Attempt at a Solution I tried just finding the...

Hey guys! I'm Urmi and I'm just a regular teen who's crazy about Physics. Physics has been my area of interest since my step into middle school and now when I see TV Series like Stranger Things, I feel so darn good that kids nowadays (and in the 80s) dig science stuffs so freaking much. I dream...

Are astronauts allowed to have tattoos on their body? What would be the implications of tattooed body in space?

If someone earns phD in astrophysics and then he/she is selected to be an astronaut, is it possible that this person will have a REALLY successful career in astrophysics? I've read so many times that after coming back to Earth astronauts are usually mentors and educators. So, my question is: is...

This question came up at another forum. The delta-v of potential guns is limited to the range 3 km/s to 11 km/s (hydrogen gun). Assume the astronaut is either on the moon or orbiting the moon. I'm wondering if a single impulse followed by gravity assists (and ideal planet alignment) could result...

Homework Statement What is the tension of this rope? Cosmonaut m=100kg is outside of spaceship M=5 tons on rope with length 64m. Cosmonaut along with his spaceship moves in orbit at a neglible distance. m=100kg M=5000kg L=64m Planet's mass 6*10^24 Planet's radius 6400km Homework Equations...

Homework Statement In microgravity astronaut training and equipment testing, NASA flies an aircraft along a parabolic flight path. The aircraft climbs from 24,000 ft to 31,000 ft, where it enters a parabolic path with a velocity of 143 m/s nose high at 45.0° and exits with velocity 143 m/s at...

http://www.msn.com/en-us/news/us/bruce-mccandless-iconic-spacewalker-dies/ar-BBHamOP https://www.nasa.gov/astronautprofiles/mccandless http://www.bbc.com/news/world-us-canada-42465059 https://www.nytimes.com/2017/12/23/obituaries/bruce-mccandless-dead-astronaut.html

Homework Statement "In 2010, a 20-year-old astronaut leaves her twin on Earth and goes on a rocket to explore the galaxy. The rocket moves at 2.7 x 10^8 m/s during the voyage. It returns to Earth in the year 2040. Using relativity, calculate the age of the returning astronaut." Homework...

Here is the scenario. An astronaut is conducting experiments inside of a laboratory module within a space station when all of a sudden, a fire breaks out. The astronaut escapes from the laboratory module he was currently using and then proceeds to seal it off using an airlock. He then...

http://www.msn.com/en-us/lifestyle/style/87-year-old-astronaut-buzz-aldrin-makes-his-modeling-debut/ar-AAmt8Py?li=BBmkt5R&ocid=spartanntp

HOUSTON (AP) -- Former astronaut Gene Cernan, who as the last person to walk on the moon returned to Earth with a message of "peace and hope for all mankind," died on Monday, his family said. He was 82. https://www.yahoo.com/news/gene-cernan-last-astronaut-moon-205711702.html On Dec. 11, 1972...

Homework Statement There are a big object and an astronaut in space. How do we calculate the gravitational force between them. I enclose a photo. I have given the mass of an astronaut, the dimensions of this giant ring and density of the ring. There is also a mistake in the photo. The astronaut...

Homework Statement An astronaut has been left outside the space station, her back towards the station. The astronaut is not rotating (angular momentum ~ L = 0) and cannot reach anything. Is it possible for the astronaut to rotate herself into facing the space station? Homework Equations...

if an astronaut were to die in space, what would they do with the body?

Definitions: Astronaut is A Person on Earth is B A travels to a star far away at near light speed, A would see B's time dilate. B would also see A's time dilate Twin paradox revived: What would happen if A returns to B at a very slow speed? Then both frames of reference would see each others'...

Homework Statement An astronaut with a mass of 90 kg (including spacesuit and equipment) is drifting away from his spaceship at a speed of 0.20 m/s with respect to the spaceship. The astronaut is equipped only with a 0.50-kg wrench to help him get back to the ship. Homework Equations...

Hi everyone I am currently a freshman in college planning on applying to the School of Engineering next fall. I want to be an Astronautical Engineer but my school doesn't even have Aerospace so I was planning on doing Mechanical. I would like to work for NASA as an Astronaut but I would also be...

Homework Statement An astronaut is pushed from her ship at a velocity of 2m/s. Her weight including her tool belt is 120kg. Remembering Newtons 3rd law, she takes 5 seconds to decide to detach her belt and throw it away from her. The 20kg tool belt leaves her suit as she throws it in front of...

1. Problem A rocket has landed on Planet X, which has half the radius of Earth. An astronaut onboard the rocket weighs twice as much on Planet X as on Earth. If the escape velocity for the rocket taking off from Earth is v , then its escape velocity on Planet X is a) 2 v b) (√2)v c) v d) v/2 e)...

Homework Statement A 26 year-old biologist makes a trip to study alien life forms in a distant planet 10 light-years away. The round trip including a stay of 1 year in the distance planet takes 21.5 years according to the clock on earth. The biologist’s son is 3 year-old when she left. Assume...

Homework Statement A 91-kg astronaut floats outside a 3,131 kg spacecraft . She's initially stationary with respect to the spacecraft . Then she pushes against the spacecraft , and moves away at 0.195 m/s to the left. Find the SPEED of the recoiling spacecraft . Homework Equations Force =...

Homework Statement a) Two astronauts, A of total mass 90kg and B of total mass 110kg are tied together by a light rope 15m long during a space walk. A starts to reel in the rope at her end. After 8.5s she has reduced the length of the rope by 5.5m. What distance does the centre of mass move in...

Lets assume we have a starship which is flying from Earth to star XY which is in distance for example 100 lightyears. The computer of that ship is programmed that way, that it maintains acceleration 1 g. After some time the speed of ship reaches some significant part of speed of light and to...

Homework Statement An Astronaut on a spacewalk has an oxygen tank strapped to his suit. The oxygen in it is pressurised to 5 atmospheres (5x10^5 Pa), and the volume of the tank is 15 litres. a) The oxygen is pumped to his mouth at atmospheric pressure (1x10^5 Pa). What is the maximum volume of...

Homework Statement An astronaut in space weights 100 kg and is holding a cannon which can shoot a 10kg cannonball. The astronaut is moving at 10 m/s. The astronaut wishes to fire the cannonball such that he turns the maximum possible angle. Find this angle in degrees. Homework EquationsThe...

One particular experiment that I remember from a visit to a Science Center is the one involving a revolving platform and a gyroscope. The user spins the gyroscope - a heavy wheel on an axle and stands on the platform which is free to rotate about its vertical axis. As I distinctly...

Hi everyone, I know this may seem a little impossible but I have always dreamed of working for someone like the Canadian Space Agency, becoming an astronaut, or even working in the ISS. I'm currently studying mechanical engineering and am about to head into my 3rd year. How would I go...

Hello Everyone, I am new to this forum. I understood from sources that space-time is like a fabric. The massive bodies bend the space around it, hence the gravity. If time is 4rth dimension, so, the space is bent in time due to mass. that pretty much explains stopping of time in black holes as...

Homework Statement An astronaut has landed on Planet N-40 and conducts an experiment to determine the acceleration due to gravity on that planet. She uses a simple pendulum that is 0.640 m long and measures that 10 complete oscillations 26.0 s. What is the acceleration of gravity on Planet...

So I found this problem in my 10th grade Physics workbook and since its test time tomorrow I must be able to work everything out. The problem I'm having here is just the calculations which give me a time short of one hour from the answer on the book. Anysways, please have a go: Homework...

Homework Statement Hey! I´m stuck on a physics problem. I had to translate this problem into English, so please excuse any grammar mistakes! An astronaut is on a mission in space. He is currently outside his spaceship which is standing still. The astronauts lifeline breaks, and he starts...

I was reading an interview on NPR with Cris Hadfield, recently retired Canadian astronaut, who has performed EVAs from both a shuttle and from the ISS. His words seem quite unequivocal, that space is an endless blackness in all directions. Am I to take his words at face value?

Homework Statement An astronaut in the International Space-station attaches himself to the four vertices of a regular tetrahedron shaped frame with 4 springs. The mass of the springs and their rest length are negligible, their spring constants are ##D_1=150 N/m##, ##D_2=250 N/m##, ##D_3=300...